Re: GTK+, WM, desktops and CSD
On Thu, Mar 05, 2015 at 10:01:44PM +0100, Olivier Fourdan wrote: It's a subtle difference, but it shows our preference: we don't want a hint to say that the DE prefers SSD, we want a hint to say that the DE can support/not support CSD. That would work as well, why not. As long as I can set up my DE to pretend not to support CSD, whatever the actual state is. Because this is, at the end, user's preference. But ultimately, SSD does not lead to the types of applications and the types of experiences we want to create... This is sad. Once your mission becomes creating certain types of experience, instead of enabling them, everything else gets destroyed, whether the types of experience it enables are also good or not. And there does not seem anything capable of stopping the destructive mindset at this moment... Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: a new combo box
On Sat, Dec 27, 2014 at 08:02:44AM -0500, Matthias Clasen wrote: over Christmas, I had some for a little side project, a new combo box. It is based on these mockups: https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/theming/widgets/combobox-replacements.png ... I'm off for a few days now - would be great to hear some feedback when I come back. Judging from the mockups, it eats precious vertical screen space and goes against Fitt's law by making it necessary to move the pointer far in order to select even an adjacent value (which, if the values are sanely organised, is a more likely change than selecting a distant value). Regards, Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Custom Titlebar
On Mon, Aug 11, 2014 at 11:28:34PM +0200, Florian Müllner wrote: That is not quite true - since GTK 3.10, there's gtk_window_set_titlebar (GTK_WINDOW (window), titlebar_widget); Unless you are running someting like Gnome 3(?), this will add a strangely looking thing to the top of your window, but inside. It will not change the title bar which is controlled by the window manager. I've never seen it actually do what is advertised. Admittely, I didn't test it much because I consider it broken by intent (not even getting to broken by design). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Segmentation fault in creating basic app using GTK+ (with C)
On Tue, Jul 01, 2014 at 01:39:03AM -0700, Anoop Neem wrote: p-one = textEntry; p-two = label; Here the unititialised textEntry and label pointers are assigned to the struct fields. textEntry = gtk_entry_new(); calButton = gtk_button_new_with_label(Calculate); And here, much laters, they are actually initialised. Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How ot remove the minimize and maximize button of GtkWindow
On Fri, Feb 21, 2014 at 03:29:07PM +0800, Wiky wrote: The default GtkWindow has a minimize , a maximize and a close button in the right or left top coner. But I want a window which only has a close button. How can I remove the minimize and maximize button? You can't. In my window manager the windows may have a completely different set of buttons. Or no title bar at all. Or whatever. And the window manager has the last word. You can override the decoration-button-layout style property, but you need 3.10+ and it will only work in something like GNOME 3 anyway. The meaningful thing you can do is setting the window type hint with gdk_window_get_type_hint() (and possibly other hints) to specify what the window *is* instead, and let the window manager treat it appropriately and consistently with other widows with the same role. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to locate the 'Gtk-WARNING' line number
On Mon, Feb 17, 2014 at 04:44:53PM +0800, Wiky wrote: Hi,all. I'm currently writing a program based Gtk+-3.0. When it runs, I get '(a.out:10874): Gtk-WARNING **: Failed to ...' in the terminal. I know the problem is about GtkLabel, but I really don't know which GtkLabel. Is there a way to locate the line numer that give the warning? Run it with G_DEBUG=fatal-warnings, let it dump core and look at the stack trace. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Populating A Combo Box With Integers In Hex
On Sat, Dec 07, 2013 at 05:54:23PM +, Tristian Celestin wrote:
I have a GtkListStore that contains 4 columns of unsigned integers
(G_TYPE_UINT). I would like to display the second column of integers
in a GtkComboBoxText widget, and I would like the integers to be
displayed in Base 12.
I would stop here and use normal GtkComboBox with a cell data function
(gtk_cell_layout_set_cell_data_func()) such as
static void
render_base12(GtkTreeViewColumn *column,
GtkCellRenderer *renderer,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
guint value;
gtk_tree_model_get(model, iter, 1, value, -1);
/* format the value here in base 12 */
g_object_set(renderer, text, formatted_value, NULL);
}
It may be possible to do this with GtkComboBoxText too. I don't know.
If I want something non-default I just use the real thing instead of
studying what is and what isn't allowed with GtkComboBoxText.
Regards,
Yeti
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Re: Valgrind is grinding my gears
On Tue, Nov 05, 2013 at 09:47:13AM -0800, David Buchan wrote: But when I invoke Valgrind at runtime, I get a lot of errors which I can't make any sense of. I have grabbed a small sample of them here: http://pdbuchan.com/valgrind.txt I don't like ignoring errors and warnings, but I don't know what to do with these. Has anybody else come across these types of Valgrind notifications? Yes, everyone. You must understand that all the GObject type registration machinery is, under normal circumstances, only ever used to create structures that will exist during the entire program lifetime. So although things such as class reference leaks can exists, eveything inside g_type_class_ref() should be ignorable – and you can clearly see from the log that these allocations happen once, not a thousand times. The same for g_thread_init(), gtk_init(), etc. Create a suppression file or google one... Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Signal of a button dynamically created
On Mon, Oct 28, 2013 at 04:22:38PM +0100, Borja Mon Serrano wrote: The point here is: how can I know what button was pressed in order to remove a row? (a) by passing something that identifies the button within user_data when you do g_signal_connect... (b) using something along the lines of g_object_set_data(button, id, ...) to give each button an identifier and retrieving it in the signal handler (c) by keeping the buttons in some data structure (list, hash table,...) and identifying them by the object address in the signal handler There are other methods, but these are probably typical. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: disable mouse click
On Thu, Oct 17, 2013 at 09:10:30AM +, Andrea Zagli wrote: i want to disable mouse click on every widget of a window when i change the cursor to GDK_WATCH gtk_widget_set_sensitive(window, FALSE); Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Delaying redraws?
On Sat, Oct 05, 2013 at 08:18:58PM -0400, Rena wrote: I have a window with a large number of GtkEntry and GtkCheckButton displaying stats, ‘Displaying stats’ sounds a bit suspicious because entry and check button are input widgets. Is it possible to speed this up, maybe by asking GTK not to redraw the widgets until I'm done updating them all? Anyway, this is what happens normally. When you change the widget state/content a redraw is queued. The redraws are then processed when the Gtk+ main loops gets to run. Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Developing a widget - help with introspection and feedback
On Tue, Oct 01, 2013 at 09:08:12PM -0400, Rena wrote: Hi all, I'm developing my first GTK widget. I have it working OK, but I can't get g-ir-scanner to cooperate. Since you don't use libtool to build the library (which I strongly recommend against but it's your fight) pass --no-libtool to g-ir-scanner. It seems to work then. Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Invisible GtkImage
On Sat, 22 Jun 2013 15:30:34 -0700, Kip Warner wrote: Yes, your code is similar to what I had tried before with GtkImage, only you're subclassing the DrawingArea instead which is probably a better idea, except it still doesn't work properly either. So how exactly does the behaviour of my simple example differ from what you want? The widget fills the allocated space and the image scales, keeping the aspect ratio. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Invisible GtkImage
On Sun, Jun 23, 2013 at 11:05:00AM -0700, Kip Warner wrote: When the parent window is resized, I'd like the image to scale to fill the allocated space as much as possible, maintaining the aspect ratio. My code draws the image correctly, but it doesn't resize as the parent window is resized: http://pastebin.com/6LEzFk8A Well, as it has already been suggested, this is a matter of packing. If you request that the widget does not expand page.pack_start(page._bannerAspectFrame, False, False, 0) then the containing box will not expand the widget when it is enlarged itself. You have to pass expand=True, fill=True. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Invisible GtkImage
On Sat, Jun 22, 2013 at 01:09:17PM -0700, Kip Warner wrote:
I can't believe resizing a widget in Gtk+ is this difficult.
Frankly, I don't quite understand what you are trying to achieve since
you have never posted anything runnable and your examples have never
included any actual drawing code. Anyway, it is trivial to create a
scaleable widget (whether it draws an image or anything else):
---
from gi.repository import Gtk, GdkPixbuf, Gdk
class ScalableImage(Gtk.DrawingArea):
def __init__(self, filename):
super(ScalableImage, self).__init__()
self.pb = GdkPixbuf.Pixbuf.new_from_file(filename)
def do_get_preferred_width(self):
pw = self.pb.get_width()
return (pw, pw)
def do_get_preferred_height(self):
ph = self.pb.get_height()
return (ph, ph)
def do_draw(self, cr):
alloc = self.get_allocation()
pw, ph = self.pb.get_width(), self.pb.get_height()
aw, ah = float(alloc.width), float(alloc.height)
r = min(aw/pw, ah/ph)
cr.scale(r, r)
Gdk.cairo_set_source_pixbuf(cr, self.pb, 0.0, 0.0)
cr.paint()
return False
w = Gtk.Window(Gtk.WindowType.TOPLEVEL)
w.connect('destroy', Gtk.main_quit)
b = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
w.add(b)
b.pack_start(Gtk.Label(label='Test'), False, False, 0)
d = ScalableImage('/usr/share/icons/HighContrast/48x48/stock/gtk-ok.png')
b.pack_start(d, True, True, 0)
b.pack_start(Gtk.Label(label='Somewhat longer test'), False, False, 0)
w.show_all()
Gtk.main()
---
This might not be exactly what you need but as I noted I don't get where
the problem is...
If you need your widget to be a GtkImage subclass things will likely
turn hairy because GtkImage is not scaleable, all its methods think it
is not scaleable so you will end up fighting the implementation of the
widget.
Yeti
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Re: Can I install both GTK+2 and GTK+3?
On Fri, May 17, 2013 at 11:40:10AM +0100, Emmanuele Bassi wrote: it's maintained only for critical bugs, or for platform support; no new feature, and no new API is *ever* going in to the gtk-2-24 branch. And that's what many 3rd party developers like. Absolutely no changes except critical bug and platform support fixes. All the small bugs and peculiarities are known, are not replaced with a different set of small bugs and peculiarities in the next release and we've learned how to work around them. Actually, I do target Gtk+3 with a program which has a number of its own widgets. And I'm constantly anxious and wondering whether it was a good decision... Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: parsing bibtex using gscanner
On Mon, Feb 18, 2013 at 05:15:56PM +, Rudra Banerjee wrote:
I am trying to parse a bibtex file using gscanner.
The problem is that, due to many formats accepted by bibtex, it seems
bit hard to parse it.
What I mean is as long as the bibtex is of the form key=some value,
then g_scanner_get_next_token can get the string.
But it fails if it is in the format key={value}.
And it fails even before escaping literal TeX code using braces within
entries or string macros have come to play...
I am attaching my code. Some help (outside using btparse/ bison )is
needed.
Don't do it this way. GScanner is a lexical scanner, it just tokenizes
the input but it does not help with grammar.
The best approach to parse a grammar is, you know, using a parser.
If you insist on writing one manually realise that you need to formally
keep state, eg. the nesting level of braces at which you are now, etc.
Construct the parser similarly you would if you did if you just wrote
the BNF and let the parser be generared, e.g. write subroutines to parse
balanced braces, string, etc. possibly recusrively calling each other.
Attempting to write code for all the cases that can occur using
sequences of hardcoded ifs will only result in buggy mess. You have
been warned.
Yeti
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Re: Problems with un-owned objects passed to closures in pygobject (gtk_cell_renderer_text_start_editing)
On Mon, Feb 04, 2013 at 04:44:02PM +0900, Tristan Van Berkom wrote: On Mon, Feb 4, 2013 at 11:39 AM, Simon Feltman s.felt...@gmail.com wrote: [...] However, it also adds a leak for the most basic (and useless) case: for i in range(10): Gtk.Button() This could arguably trigger a compiler warning, or even an error. This is nonsense. Since Gtk.Button() is not guaranteed *not* to have any side effects it is perfectly valid to run it without doing anything with the return value. In fact, since we talk about a dynamic language, the interpreter does not know, in general, what Gtk.Button will mean at the time the code is actually executed. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: GTK app development for windows.
On Thu, Jan 31, 2013 at 12:32:48AM +0700, Ardhan Madras wrote: One thing you should know that most version of GTK+ in today Linux system is using version 3.x. This is somewhat inaccurate. All major Linux distributions contain Gtk+3 packages and the number of Gtk+3 programs grows. But if you look outside core Gnome3, at third-party programs, the number of Gtk+2 programs is huge. Some will be never ported. After all, even though they are quite rare nowadays, some Gtk+1 programs still have not been ported to Gtk+2... I recommended you to use also GTK+ 2 in Linux, and you can build it with no or less efforts in Windows compared if you use GTK+ 3 in Linux but build it with GTK+ 2 in Windows. For new projects, I would not recommend using Gtk+2 unless you are quite conservative or it is a small project using only stock widgets (in such case porting to Gtk+3 will not be a big deal). For larger projects, it is more likely that Gtk+3 will be fine on MS Windows and Gtk+2 obsolete everywhere when you get to releasing a stable version... Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: open an existing file in buffer and write on it
On Fri, Jan 25, 2013 at 04:25:53PM -0500, Liam R E Quin wrote: That it's easier for the programmers to create and read application-specific binary files is a problem that would be worth fixing. Probably you mean replacing it with the problem of application-specific hodge podge XML... I have implemented the import of ~80 data formats of varying complexity and style to one program. I have seen both utterly mad binary formats and binary formats that were well thought out and pleasure to implement. But XML was crap quite invariably. It appears to be used as an excuse for not thinking about data representation at all. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: edit and use treeview cell
On Thu, Jan 24, 2013 at 09:41:20AM +, Rudra Banerjee wrote: g_object_set(cell, editable, TRUE, NULL); but I have no idea of how to connect the edited flag to file/buffer. It will be very helpful if someone kindly show the way...a very short example may be. Have you read the tutorial? http://scentric.net/tutorial/sec-editable-cells.html Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Would this leak be inside gtk?
On Wed, Jan 23, 2013 at 10:41:54AM -0600, Edscott Wilson wrote: I conclude this is a gtk memory leak. It occurs when calling gtk_combo_box_new_with_entry(), Apparently, when the dialog that contains the combo box is destroyed, the GList visible_children in file gtkcombobox.c is not being cleansed of the pointer to the child widget, entry. The leak does not occur if plain gtk_combo_box_new() is used instead. Correct me if I'm wrong. Whether gtk_combo_box_get_path_for_child() can be called with a visible child different from those enumerated there (the only way a leak can occur) I cannot tell. In any case, any suspected leak that goes through GSlice should be first reproduced with G_SLICE=always-malloc -- and you find it real, a bug report is much better than suppression... Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: glib-mkenums in glib 2
On Mon, Dec 31, 2012 at 05:24:09PM +, John Emmas wrote: which should either be in gio/gioenums.h or alternatively, gio/gregistrysettingbackend.h. It's the absence of this enum that's causing 'g_registry_backend_get_type()' to not get auto-generated when glib-mkenums gets processed. This all goes to a strange direction. First, GRegistryBackend is not an enum, it is a subclass of GSettingsBackend. glib-mkenums will not generated g_registry_backend_get_type() for you. The get-type function g_registry_backend_get_type() is provied by gio/gregistrysettingsbackend.c. Which is built only on MS Windows (using the standard Makefiles, see the if OS_WIN32 condition there). So might it be that you do not compile it into gio? Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: glib-mkenums in glib 2
On Sat, Dec 29, 2012 at 07:13:56AM +, John Emmas wrote: 2) Along a similar vein, it looks like I need to process the module 'gio/gdbus-2.0/codegen/gdbus-codegen.in' but I don't know what program / script I need for processing it. Anything ending with .in is usually processed by configure (config.status) which you obviously don't have so you must replace @VARIABLE@s with the corresponding values using whatever you have. But the only two variables present there are unused on MS Windows anyway – MS Windows neither recognise shbangs nor is the fixed datadir code path useful there. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: one function to go...
On Sun, Dec 23, 2012 at 02:35:31PM -0800, Gary Kline wrote: in this popup dialog I would have a few words that the file does not exist and want a button WITH the Enter-key icon that gives an iconic clue that all the user need do is hit the enter key. I suppose if the users could, if they wished, mouse-click on the button. I cannot speak for your target audience but according to my experience (a) if people see a message box with a single button (probably with some visual clue that it has focus) they will just press Enter or Esc to make it go away, or (b) if people see a button they will always use the pointer to click on the button no matter what other, possibly much simpler, means may be available to activate it. This is a strict division with little between. There is no way to migrate people from (b) to (a), you can try for years with no effect. So targetting those between you may find you are targetting a group of size zero. Just my 2 eurocents... Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Focus vs Sensitivity
On Fri, Dec 21, 2012 at 07:16:07PM -0200, Ivan Baldo wrote:
What happens is that the Tab handler runs before the value-changed
handler
This is the wrong view what happens. The adjustment value is not
updated during user's editing of the entry. If the spin button is not
set to numeric its entry can contain any text during the editing
(whereas setting numeric ensures the entry contents always parses as a
number, making impossible to enter numbers in the scientific format, for
instance). The value is updated when editing finishes, for which one
possibility is that the entry loses focus. So *first* the focus leaves
the entry then *in consequence* the adjustment value is updated.
However, this does not seem to be entirely the core of your problem.
The CRITICAL errors are printed becuase in gtk_window_real_set_focus()
this:
if (priv-has_focus)
do_focus_change (priv-focus_widget, TRUE);
g_object_notify (G_OBJECT (priv-focus_widget), is-focus);
assumes that do_focus_change() cannot make priv-focus_widget become
NULL. IMO there may be sane use cases when this can occur (like yours)
so I would try to report a bug.
How to work around it? Instead of connecting to value-changed monitor
all changes to the entry text:
g_signal_connect(spin_button, changed, G_CALLBACK(spin_entry_changed),
spin_button2);
...
static void
spin_entry_changed(GtkEntry *entry, GtkWidget *target)
{
gtk_widget_set_sensitive(target, g_strtod(gtk_entry_get_text(entry),
NULL) != 0);
}
This will *also* make the second entry insensitive when the content of
the first does not parse as a number at all (which is likely a good
thing though perhaps not).
Regards,
Yeti
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Re: GtkCheckMenuItem needs double click?
On Sun, Dec 09, 2012 at 12:57:43AM +1300, Perdie Perduta wrote: Using glade with GtkBuilder to create my application GUI. I'm developing testing on Windows 7 using Microsoft C++. Trying to add a record button to my menu bar. Note: Ideally I would have liked a nice red record button that lights up while my application is recording, however just to get it working I put in GtkCheckMenuItem. It is all working but inexplicably I have to click my GtkCheckMenuItem *twice* to for each toggle. Is this a known common mistake? Any advice or reference to previous thread on the subject would be appreciated. Adding *buttons* to *menubars* is certainly very odd. It may be that to activate the button the menu item must get focus first, hence the two clicks. My advice is to use a toolbar instead. It seems to fit what you are trying to do better and you can have tool items that act like plain buttons, toggles, radio button, that pop up menus, etc. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Forks, slices and threads: Can you make GSlice deadlock?
On Fri, Dec 07, 2012 at 05:53:57AM -0500, Matthias Clasen wrote: See https://bugzilla.gnome.org/show_bug.cgi?id=679683 g_test_trap_fork is just a bad idea, doubly so with threads (and every glib program is using threads nowadays)a Thanks, somehow, I missed that bug. Regards, Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Forks, slices and threads: Can you make GSlice deadlock?
On Fri, Dec 07, 2012 at 08:44:01PM +, Chris Vine wrote: ... So for your scheme to work, the parent before forking must be single threaded. As I have learnt the hard way, this is not something I can ensure even the program does not use any multi-threading itself because libraries may. Even apparently very innocent programs can exhibit weird threading-related bugs. And while it is a sort of gray area, starting to use threads internally is rarely considered an ABI breakage. So, unfortunately, the conditions you listed can be reduced to ‘it will never work’ in practice. Anyway, I do not attempt to do this kind of fork not-exec in real Gtk+ applications. So I'm looking forward to a better solution for unit tests which is discussed in the bugzilla bug mentioned by Matthias. Regards, Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Forks, slices and threads: Can you make GSlice deadlock?
Hello, can g_slice_alloc() be made to deadlock simply by some bad sequence of GLib function calls, considering the calling program does not, of course, hold any GLib lock explicitly? (Without a GLib bug, that is.) I am starting to suspect a problem in GSlice interaction with threads. But I cannot report anything to bugzilla because I am unable to get to the core of the problem. My program (test program for a library) does g_test_trap_fork() and the child creates worker threads with g_thread_new(), sends them tasks with GAsyncQueue and cancels the tasks using GCancellables. Occasionally, a seemingly innocent g_thread_new() call deadlocks in g_slice_alloc(), see the backtrace below for how and where exactly. If it happens, it happens in the child soon after forking. I canNOT reproduce any deadlock if: - G_SLICE=always-malloc is set, - g_test_trap_fork() is not used and the test is run directly in the main program, - under valgrind (also, it reports no errors), - I print anything to stderr in g_slice_alloc() – infuriating, but so it works. When it deadlocks the main thread looks: #0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136 #1 0x003451009c8c in _L_lock_1024 () from /lib64/libpthread.so.0 #2 0x003451009c35 in __pthread_mutex_lock (mutex=0x25442e0) at pthread_mutex_lock.c:105 #3 0x7fe496b01fb6 in g_mutex_lock (mutex=0x7fe496d9f8e0) at gthread-posix.c:208 #4 0x7fe496adef29 in magazine_cache_pop_magazine (ix=4, countp=0x2544368) at gslice.c:718 #5 0x7fe496adf235 in thread_memory_magazine1_reload (tmem=0x2544310, ix=4) at gslice.c:794 #6 0x7fe496adf4df in g_slice_alloc (mem_size=72) at gslice.c:992 #7 0x7fe496adf572 in g_slice_alloc0 (mem_size=72) at gslice.c:1032 #8 0x7fe496b02981 in g_system_thread_new (thread_func=0x7fe496ae8fc9 g_thread_proxy, stack_size=0, error=0x7fffb1ded5a0) at gthread-posix.c:1101 #9 0x7fe496ae9207 in g_thread_new_internal (name=0x491da9 canceller, proxy=0x7fe496ae8fc9 g_thread_proxy, func=0x461790 cancel_cancel, data=0x25822f0, stack_size=0, error=0x7fffb1ded5a0) at gthread.c:884 #10 0x7fe496ae90d5 in g_thread_new (name=0x491da9 canceller, func=0x461790 cancel_cancel, data=0x25822f0) at gthread.c:835 #11 0x00461667 in master_cancel_one (nproc=1) at master.c:232 #12 master_cancel_one (nproc=1) at master.c:208 #13 0x7fe496ae792d in test_case_run (tc=0x2555c90) at gtestutils.c:1679 #14 g_test_run_suite_internal (suite=suite@entry=0x2557c80, path=optimized out, path@entry=0x7fe496b5c2be ) at gtestutils.c:1732 #15 0x7fe496ae7aa6 in g_test_run_suite_internal (suite=suite@entry=0x2557c60, path=optimized out, path@entry=0x7fe496b5c2be ) at gtestutils.c:1743 #16 0x7fe496ae7aa6 in g_test_run_suite_internal (suite=suite@entry=0x2557c40, path=optimized out, path@entry=0x7fffb1deef4d /master) at gtestutils.c:1743 #17 0x7fe496ae7aa6 in g_test_run_suite_internal (suite=suite@entry=0x2545c20, path=optimized out, path@entry=0x7fffb1deef43 testlibgwy/master) at gtestutils.c:1743 #18 0x7fe496ae7e0b in g_test_run_suite (suite=0x2545c20) at gtestutils.c:1788 #19 0x7fe496ae7e55 in g_test_run () at gtestutils.c:1308 #20 0x00412e11 in main (argc=1, argv=0x7fffb1dedae8) at testlibgwy.c:88 There is also a worker thread waiting on my own GConf with my own lock at the moment: #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166 #1 0x7fe496b02575 in g_cond_wait (cond=0x258b5a8, mutex=0x258b5a0) at gthread-posix.c:746 #2 0x7fe496a9b09b in g_async_queue_pop_intern_unlocked (queue=queue@entry=0x258b5a0, wait=wait@entry=1, end_time=end_time@entry=-1) at gasyncqueue.c:421 #3 0x7fe496a9b546 in g_async_queue_pop (queue=queue@entry=0x258b5a0) at gasyncqueue.c:455 #4 0x7fe4973b60e3 in worker_thread_main (thread_data=optimized out) at master.c:190 #5 0x7fe496ae9082 in g_thread_proxy (data=0x258e850) at gthread.c:797 #6 0x003451007d14 in start_thread (arg=0x7fe49534c700) at pthread_create.c:309 #7 0x0034508f168d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 and several threads are in the following state: #0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136 #1 0x003451009c8c in _L_lock_1024 () from /lib64/libpthread.so.0 #2 0x003451009c35 in __pthread_mutex_lock (mutex=0x25442e0) at pthread_mutex_lock.c:105 #3 0x7fe496b01fb6 in g_mutex_lock (mutex=0x7fe496d9f8e0) at gthread-posix.c:208 #4 0x7fe496adf163 in private_thread_memory_cleanup (data=0x7fe4740008c0) at gslice.c:774 #5 0x003451007b12 in __nptl_deallocate_tsd () at pthread_create.c:157 #6 0x003451007d22 in start_thread (arg=0x7fe495b4d700) at pthread_create.c:316 #7 0x0034508f168d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 That's all the threads. So, they are all trying to lock allocator-slab_mutex in
Re: Lack of gtk_application_get_window_by_id function despite of documentation
On Sun, Nov 18, 2012 at 12:05:51AM +0100, Jakub Kucharski wrote: Can you tell me what's wrong? The documentation for gtk_application_get_window_by_id says ‘Since: 3.6’. Sid has Gtk+ 3.4. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkTreeIter assignment
On Tue, Oct 30, 2012 at 05:05:37PM +0400, Vlasov Vitaly wrote:
Is that normal, to assign one GtkTreeIter to another?
For example:
void add_new( ... , GtkTreeIter *iter)
{
GtkTreeIter *default_iter;
if(iter != NULL)
{
default_iter = iter; -- is that noraml??
This is pointer assignment: default_iter will denote the same chunk of
memory as iter. What exactly should be abnormal here?
}
gtk_tree_store_append(default_iter);
This is invalid code: wrong number of arguments of wrong type. And, of
course, default_iter is possibly being used uninitialised.
Yeti
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Re: GtkTreeIter assignment
On Tue, Oct 30, 2012 at 06:53:18PM +0400, Vlasov Vitaly wrote: GtkTreeIter *default_iter -- GtkTreeIter default_iter; It's question about: default_iter = *iter; -- is that normal? Yes. It is explicitly specified that tree iters can be copied by value. See for instance here http://developer.gnome.org/gtk/stable/GtkTreeModel.html#gtk-tree-iter-copy Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: understanding GtkRGBA
On Thu, Oct 11, 2012 at 11:14:00AM +0100, Rudra Banerjee wrote:
So, I am trying to use:
gtk_widget_override_background_color (Hbutton, GTK_STATE_NORMAL,
GdkRGBA(0,0,0,1.));
ofcourse, this is not the way to use RGBA.
What is the correct way of using it?
GdkRGBA is a plain C struct and is used as any other plain C struct,
please see your C reference guide for the syntax and use of structs.
In C89 you need to create it on stack (or on heap) if you want to take
its address.
In C99 you can also use (GwyRGBA){0.0, 0.0, 0.0, 1.0}.
Yeti
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Re: understanding GtkRGBA
On Thu, Oct 11, 2012 at 12:56:36PM +0200, David Nečas wrote:
In C99 you can also use (GwyRGBA){0.0, 0.0, 0.0, 1.0}.
I mean (GdkRGBA){0.0, 0.0, 0.0, 1.0}, was thinking about something
else...
Yeti
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Re: link treeview with file
On Thu, Oct 11, 2012 at 06:58:04PM +0100, Rudra Banerjee wrote: As the treeview is loaded from a file, in my program, new entries can also be entered. It writes to the Treeview, as well as in a file using: strAuth = gtk_entry_get_text(GTK_ENTRY(e-entryAuth)); /*Entering the data in Treeview */ gtk_list_store_append(store, siter); gtk_list_store_set(store, siter, COL_BIB_KEY, strkey, COL_BIB_TYPE, strcombo, COL_BIB_NAME, strAuth, COL_BIB_YEAR, strYear, COL_BIB_PUB, strTitle, -1); /*Entering the data in file */ if( strlen(strEditor)!=0) g_fprintf( fop, \tEditor=\%s\,\n, strAuth); ...etc... Now, my question is, can this two entry be linked such that if I delete an entry from treeview, it will also delete the entry from file(fop). In principle, certainly: by loading the entire file, parsing it, finding the corresponding line, deleting it and saving the file again. Or, if the file ‘cannot’ change on-disk meanwhile, just by re-generating the file from the treeview and saving it. For a saner use you need an API for handling of these files, similar to GKeyFile for .ini files. Apparently you are trying to process BibTeX files. Although there is no shortage of tools working with BibTeX files and even a few attempts to create a reusable BibTeX file handling library have been made (btOOl, ...), I cannot really recommend any parser. Maybe others know some. Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: gtk_tree_model_get end of Line marker
On Sun, Oct 07, 2012 at 05:43:52PM +0200, Arne Pagel wrote: because of my lazy programming style I sometimes forget or overwirte the comma before the -1 end of line marker for the gtk_tree_model_get or gtk_tree_store_set function. This error can usually not be detected by the c-compilers, so that I had to spend some really unnecessary time to fix this typo. Now I defined a makro for this, and in the case I forget the comma again at least I get a compiler error: #define TREE_MODEL_EOL (int)-1 gtk_tree_model_get(model,iter,STUFF,stuff,TREE_MODEL_EOL); I think something like this would be integrated officially and also the all the examples would be updated, at lot of headache of many people could be avoided. Errors related to the -1 sentinel could be avoided by much more straightforward means: defining gtk_tree_model_get() with column id and value pointer reversed, i.e. first comes the value pointer (presumably non-NULL), then comes the column id. Then gtk_tree_model_get() could just carry __attribute__((sentinel)) a.k.a. G_GNUC_NULL_TERMINATED. But the Gtk+ devs decided otherwise. It would be nice (also in other cases) if gcc had an attribute for arbitrary constant-value sentinels. Unfortunately, it has not. The corresponding bug http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28319 seems to be stale. I'm not sure about LLVM but it does not seem to support this either. While I've never forget the comma before -1 I have forgetten the -1 entirely a few times so something that prevents all sentinels errors would be quite useful. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Sortable Treeview
On Sun, Oct 07, 2012 at 12:25:22AM +0100, Rudra Banerjee wrote: What I am looking for, is make my header clickable to get the sorting, with initial view completely unsorted. Then look at List Store in gtk-demo. It demonstrates this clearly. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Handle Enter pressing at GtkEntry
On Wed, Oct 03, 2012 at 08:19:39PM -0700, Andrew Potter wrote: On Wed, Oct 3, 2012 at 7:42 AM, Yury Alyaev muta...@rambler.ru wrote: What is the right way to catch Enter pressing at the end of the text input to GtkEntry gtk_entry_set_activates_default() is probably what you want. If you actually want what it does. Usually, I do not want that at all. I want to recalculate and update something once user has finished editing the value there (but not during the editing). This means namely when the entry loses focus, however, it should be also possible to invoke the update without leaving the entry, by pressing Enter. So, instead of gtk_entry_set_activates_default() I use something like set-activate-on-unfocus and then just handle activate. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Handle Enter pressing at GtkEntry
On Thu, Oct 04, 2012 at 06:55:08PM +0900, Tristan Van Berkom wrote: I'm curious about this, out of my own personal interest... do we have a workable solution for this commit-on-focus-out paradigm ? As I understand, it's not very stable to use focus-out events and, I recall reading a detailed blog about this I can't seem to find at the moment (but it seems the problem is not at all limited to GTK+, just broken by design). Note in many cases validation/apply/commit user input on focus-out does work but... here is a case where I expect it to break: ... Validation is a different problem. For validation, the user should have an instataneous visual clue whether the input would be considered valid (but no blocking of non-conforming inputs, of course). In the second case you mentioned, loading of new values must not happen when there are uncommited changes and that should be also easy to achieve – except it may come a bit too late from the user's perspective if validation needs also be performed. However, if the GUI is constructed so that the user expects immediate commit, as it seems from your description, then it should be probably really immediate. Imagine the case I was talking about as function plotting. You may attempt to plot the function as the user types the expression but (1) the ‘plotting’ thing is not something really instanteneous and so doing it after each keystroke would interfere with typing (2) the user is essentially never interested in displaying the intermediate rubbish, in fact, he may be strongly intereseted in seeing the last meaningful, i.e. commited, output while editing. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Handle Enter pressing at GtkEntry
On Wed, Oct 03, 2012 at 09:42:24AM -0500, Yury Alyaev wrote: What is the right way to catch Enter pressing at the end of the text input to GtkEntry. The obvious way is conecting the callback to the activate signal, but for some reason documentation says Applications should not connect to it. My Gtk+ documentation says the opposite: ...it is also commonly used by applications to intercept activation of entries. and I've been using it for a long time without problems. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: glib branched
On Wed, Oct 03, 2012 at 12:35:57AM -0400, Matthias Clasen wrote: I have now created a glib-2-34 branch, so master is now open for ... GTask ... Is this also intended, at least in the future, for things like long-running calculations that need some monitoring/reporting of progress not just the final result? I mean, some monitoring can be always implemented on top of GTask but once I get my hands dirty with explicit asynchronous communication I can implement that directly on top of GThread as well. I always look hopefully at the asynchronous interfaces in GLib with hope, however, the intended use cases do not seem to match mine... Thanks, Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: PATHBAR written using GTK 3
On Tue, Oct 02, 2012 at 03:42:53AM -0300, Mariano Gaudix wrote: Excuse me . For my the question .. someone have or seen a PATHBAR written with gtk 3 . You can tell me the page address where you can download the code for this widget . I suppose typing ‘dowload Gtk+’ to Google is not that difficult so the question is where in the source code you can find GtkPathBar – and that is gtk/gtkpathbar.c and .h (if grep is not your friend). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Synchronization of gtk_tree_store add/remove events
On Wed, Sep 19, 2012 at 09:44:28PM +0200, Arne Pagel wrote: I have an application where I use a tree-view to display some data from an external hardware. Different Objects can be added or removed to the treestore, each existing object in the treestore has a specific id which is used to get data over some communication interface. It can easily happen, the the user deselects an object in the treestore while this communication is ongoing. This means that my treepath or iter which I rembered befor is not valid anymore after the communication has finished (*1). Did you mean deletes instead of deselects here? The rest of the description would make much more sense to me then. Anyway, I think GtkTreeRowReference is what you need – a thing that points to a specific row that may not exist anymore and it had a method to tell whether the row still exists. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: gtk_tree_view/store, best way to select all nodes of a branch
On Wed, Sep 12, 2012 at 10:40:11AM +0200, Arne Pagel wrote: My current simple solution is as follows: I use the gtk_tree_model_foreach() function and pass some user data with the current major number of the tree-path. Inside the foreach-function I use gtk_tree_path_to_string, where I check if the first number is identical to the user data. This works, but I have to use a lot of string functions. Is there a smarter way to do that with less overhead? Use gtk_tree_selection_select_range(). You already have the start path, so, how to get the end path? Use gtk_tree_model_iter_n_children() and gtk_tree_model_iter_nth_child() recursively to always move to the last child in the branch. If your tree is only two-level (as it seems to be) you do not even need to recurse. Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: how to get entry from GtkComboBoxEntry?
On Tue, Sep 11, 2012 at 03:29:10PM +0400, Vlasov Vitaly wrote: I wanna use some ComboBox/Entry widget: It should contain tree model with language names and hidden ISO 639-1 codes, for example English(en) German(de) Russian(ru) or other. And, in addition, it should allow to user write ISO 639-1 language code from keyboard. So, with tree i can get selected value and respectively get lang code from tree. When in ComboBox is not selected values, it could mean: 1) User set it from keyboard 2) Entry is empty. It is possible to create ComboBox with tree model and separate entry, but i don't like that way. How to check, whether the user has entered a value from the keyboard or entry is empty? May be i should use other Entry/ComboBox widget? I used before GtkEntryCompletion. It work's, but it uncomfortable with two-letter ISO codes. Now i use gtk-2.0, but later will switch to 3.0. As i can see, in gtk-3.0 GtkComboBox and GtkComboxEntry is same thing. But i still can't get entry widget from gtk-3.0 ComboBox. I don't quite get the difference between empty entry and user-typed text (she could type something and then delete it, for instance). Anyway, I will try to answer the simple part: Use gtk_bin_get_child(comboboxentry) to get the GtkComboBoxEntry's GtkEntry widget. Regards, Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: how to get entry from GtkComboBoxEntry?
On Tue, Sep 11, 2012 at 04:14:52PM +0400, Vlasov Vitaly wrote: Is gtk_bin_get_child() always return GtkEntry widget? For a GtkComboBoxEntry? Yes. But in general, it returns the only child of a GtkBin container, whatever it is for that container. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: write to a file using g_print
On Tue, Aug 21, 2012 at 11:42:53PM +0100, Rudra Banerjee wrote: Is it possible to write to a file using g_print? g_print() is not an interface to print things to *a specific destination*. Quite the opposite. It sends messages to the print handler. Depending on the print handler stup, it do anything with them (print to stdout, save to some file, display somewhere, discard, ...). Any solution? Don't do that then. Use g_fprintf(). Or, in most cases, just fprintf(). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GList strange behavior
On Thu, Aug 16, 2012 at 06:49:25PM +0400, Vlasov Vitaly wrote: I need to save newly created list poiner. No. Many operations change the list head (by adding, removing, reordering, ..., elements). In general, if an operation returns the new list head you *must* save and use that in subsequent operations. So, i need to use g_list_last() to save it? Is there another method to save created list pointer? *Every* operation that may change the list head returns the new list head. That's the pointer to use. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: next steps for touch support in GTK+
On Sat, Aug 04, 2012 at 03:39:05PM +0100, Emmanuele Bassi wrote: one implies a soft action (GtkToggleButton), whereas the other implies something similar of a hardware switch (GtkSwitch). As every user knows, widgets relay wishes to magic pixies. I wonder if that is soft or hard action, maybe it depends on how hard you need to beat the pixies to do what you want. Do you actually expect different kinds of on/off controls to be mixed wildly because each was selected based on how soft is the action it implies? they both have their use cases which are not interchangeable: https://live.gnome.org/GnomeOS/UX/Guidelines/SwitchWidget the page above should become part of the new Human Interface guidelines/design patterns. not every application should use switches, nor existing applications should be mindlessly migrated to moving from toggle and/or check buttons to switches. All cases listed there as good use cases of GtkSwitch would be – for me – improved by using a plain toggle button. It would take less horizontal space, it would be less wordy, it would not leave me wondering whether it shows ON when it is on or whether I should move it to ON if I want it ON (yes, I still do not remember it), it would not look trendy, and it would not have translation issues. In fact, even the ‘wrong’ checkbuttons would represent an improvement for me. I would also say the widgets are completely interchangeable, but forced to interpret the statement ‘their use cases are not interchangeable' somehow I would have to conclude that GtkSwitch has no meaningful use case at all. Could the page be improved to include this? In my opinion it could lead to a considerable simplification of the guidelines. the short takeaway is that the switch should be used in specific cases, and that the way its been defined as a widget does not allow inheritance from GtkToggleButton or GtkButton (no label, no children, styling of trough and handle). I am sorry but, again, this is just a recapitulation of the status quo. Stating it a hundered times does not make problems vanish magically even if you beat the pixies really hard with a switch. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Passing structure with a callback
On Tue, Jul 24, 2012 at 12:27:41AM -0600, Frank Cox wrote: Is my understanding of how this actually works correct? Yes. Now please read my reply to your first e-mail... If so, what is the recommended way to deal with structures like this? ...that already answered this too. https://mail.gnome.org/archives/gtk-app-devel-list/2012-July/msg00057.html Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Passing structure with a callback
On Tue, Jul 24, 2012 at 08:43:08AM +0200, David Nečas wrote: Now please read my reply to your first e-mail... I see. So, in case you read the mailing list archives: It's a bit pointless to ask questions in a mailing list if your mailserver blocks all answers. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Passing structure with a callback
On Sun, Jul 22, 2012 at 11:22:07PM -0600, Frank Cox wrote: My widgetshare structure gets passed from main() to MainMenu with no apparent problem, but using the same scheme to pass emailshare from MainMenu to Clear segfaults. This is elementary C. Both structures are created on stack so they cease to exist upon return from the corresponding functions. While main() is never exited while the program is running, MainMenu() is particularly short-lived. Use heap-allocated data. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How can I check if a GtkWidget exists?
On Fri, Jul 20, 2012 at 12:50:45AM -0600, Frank Cox wrote: How can I check if a GtkWidget exists? By keeping track of it (either when you create and destroy the widgets or using weak references/weak pointers/destroy callbacks/...). ‘Checking the existence of a widget’ is, essentially, a meaningless phrase. If the widget has been destroyed you do not have any means to *refer* to it. You cannot ask ‘does this widget exist’ because there is no way to say ‘this widget’. Using the pointer to the memory the widget used to occupy for anything is a programming error. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How can I check if a GtkWidget exists?
On Fri, Jul 20, 2012 at 10:15:54AM +0200, Miroslav Rajcic wrote: Not sure, but perhaps GTK_IS_WIDGET(widget) macro would help. If you have the pointer to a GObject instance and want to know whether it is an instance of GtkWidget (including subclasses) then GTK_IS_WIDGET() is the right thing to use. But if you use this macro with a random pointer (e.g. one pointing to a memory location where some GObject might be some time ago) do not expect anything more useful than a CRITICAL error/crash. To deal with objects that may or may not exist use one of the several mechanisms (weak pointers/weak refs/destroy callbacks/...) for keeping track of the object existence. And, generally, use these mechanisms to avoid even the possibility of dangling pointers in your code. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Open file from menu
On Mon, Jul 09, 2012 at 03:40:11PM -0400, Liam R E Quin wrote: also check that the free() was OK I wonder how you do that (apart from not getting any glibc MALLOC_CHECK_ error message or similar). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: multiple GTKentry inside a GTKnotebook
On Mon, Jun 18, 2012 at 11:28:48PM +0530, Rudra Banerjee wrote: pasted is a minimal layout of my trial to create a bibliography maker. The problem is, in Authors tab inside notebook, I want to edit 3 more entry, as Editor an example. But its taking only the first entry. Please show me where I am making the error. GtkFrame is a GtkBin which means it can contain a single widget. If you want more you need to use packing container (GtkTable, GtkVBox, GtkGrid, ...), put it to the frame and then pack widgets to this contaner. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Help with a multi-threaded application. Spot a crash.
On Thu, May 31, 2012 at 07:11:10AM +0100, Osmo Antero wrote: Now learned that it's a POD, Perl Object. I meant Plain Old Data, but of course in C. Nothing in GLib (as opposed to GObject and GIO) is an GObject. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Help with a multi-threaded application. Spot a crash.
On Wed, May 30, 2012 at 08:30:40PM +0100, Osmo Antero wrote: I have a multi-threaded application that filters data practically while user types text in an entry-field. But this applications regularly crashes. GRegex is not a GObject, it's just POD. So if (G_IS_OBJECT(search-regex)) will surely attempt to read some bogus memory location and crash. I cannot see why such code is there at all but anyway set search-regex to NULL if it does not exist and then just use if (search-regex) if necessary. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: wide characters in label
This is the wrong mailing list, dedicated to development of Gtk+. Your e-mail does not contain any question. So I suppose you want to know why your code is broken. On Tue, May 29, 2012 at 09:18:38AM -0700, jessCPP wrote: setlocale(LC_CTYPE, UTF-8); A bit strange and not actually influencing anything else in your code. wchar_t wide[]=Lthis is wide; Gtk+ works with UTF-8 encoded strings (i.e. sequences of bytes), *not* wide characters. wchar_t is an arbitrary poorly-defined platform-dependent type, making difficult to write a portable code. Do not use wide characters unless you have to. And if you have to then convert them to UTF-8 for use with Gtk+, e.g. using iconv with WCHAR_T as the source encoding. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: compile gtk with libcurl
On Thu, May 24, 2012 at 10:37:01PM +0530, Rudra Banerjee wrote: $ gcc curlgtk.c -o cpan `pkg-config --cflags gtk+-2.0` `pkg-config --libs libcurl gtk+-2.0` /usr/bin/ld: /tmp/ccZN7P8Q.o: undefined reference to symbol 'g_thread_init' If you use gthread you must link with it. Simple. Use pkg-config --cflags --libs gtk+-2.0 gthread-2.0 libcurl Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: g_filename_to_uri() issue in glib-win32
On Wed, May 23, 2012 at 06:48:31AM +0100, John Emmas wrote: But whatever that (second) character looked like, it's decimal value would always be 246 (because the UTF-8 sequence C3 B6 translates to decimal 246). The URI translation of decimal 246 is %F6. This is nonsense. Percent-encoding consists of % followed by *two* hexadecimal digits and encodes *bytes*, see http://tools.ietf.org/html/rfc3986#section-2.1 If things worked as you suggest you would not be able to encode any codepoint larger than 255 and the entire thing would be pretty useless. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: probable gtk_window_present and pango help
On Fri, May 18, 2012 at 09:12:45PM +0530, Rudra Banerjee wrote:
Here is a minimal example of a program, where if i click the button, a
pop up window appears. I am posting both the call back function and the
main routine (table.c).
I am facing 2 problem.
Unfortunately, you are facing much more problems.
For start
gtk_container_add(GTK_CONTAINER(window1), vbox1);
is called with an unitialised variable window1 (i.e. no window1 is ever
created). This leads to a CRITICAL message to console and/or crash.
And if window1 existed then vbox1 would be packed into two different
containers (window1 and window) which is not possible. So I'm ignoring
that part altogether.
The callback should look like
void
callback_it(GtkWidget *button, gpointer user_data)
{
...
}
where in user_data the callback receives the last argument you passed to
g_signal_connect(). It is rarely useful to pass a constant such as
Call there.
The callback is *not* another main() function; it should *not* call
gtk_init() again, etc. Please read the signals section in the Gtk+
tutorial
http://developer.gnome.org/gtk-tutorial/2.90/x159.html
There are several other highly suspicious things:
- redeclaration of global variables (such as window) inside a function;
are you aware this creates a new local variable window that has nothing
to do with the global one?
- inclusion of .c files instead of separate compilation + linking them
together
- calling gtk_widget_show() on individual widgets and then again showing
everything using gtk_widget_show_all()
- not terminating the Gtk+ main loop when the main window is destroyed;
this is usually the first thing to set up in a Gtk+ program, see
http://developer.gnome.org/gtk-tutorial/2.90/c39.html#SEC-HELLOWORLD
etc.
1) The problem is evry time I click the button main, a new window
appears(obviously). What I want to achive is, if the window is already
present, it should not open again; rather it should focus that window. I
believe, this can be achived by gtk_window_present(may be I am wrong).
But I don't know how to use it.
You use it just by calling gtk_window_present() on the window object.
To that meaningfully you need not only to keep the window object around
but also get notified when the window is destroyed. Either by
connecting to the destroy signal or, if you just want to set a pointer
to NULL once it is gone, by using g_object_add_weak_pointer().
2) In the callback function, I have C_1 and C_2. What I want to achive
is Csub1/sub etc via pango(or any other).
For simple things you can sometimes just use UTF-8. But generally, you
need to use Pango markup. If the widget does not have function to set
the markup it has a function to obtain the label widget so that you can
use gtk_label_set_markup() on that.
See the attached code with main problems fixed (and merged to one file).
Please go through the Gtk+ tutorial farther that you perhaps have done.
Yeti
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Re: G_PARAM_SPEC_VALUE_TYPE() question
On Tue, May 15, 2012 at 08:39:12AM +0200, Marc Balmer wrote:
I want to set properties of an object using the g_value_set_type()
functions and to cast my value (which I get from a Lua script, which
e.g. does not differentiate between integers and floats) I need to know
the type of the property.
Ideally something like the following:
switch (G_PARAM_SPEC_VALUE_TYPE(prop)) {
case G_TYPE_INT:
g_value_set_int(...);
break;
case G_TYPE_STRING:
g_value_set_string(...);
break;
}
You get the idea... This works for basic types, but not for e.g.
GParamEnum, i.e. when G_PARAM_SPEC_TYPE_NAME() returns GParamEnum,
above scheme seems not to work. There is a type G_TYPE_ENUM, but it is
not returned in case of GParamEnum.
You need to use g_type_is_a(...) on the type obtained from
G_PARAM_SPEC_TYPE_NAME(), not direct comparison to some explicit GTypes.
Then it will work also with subclassable types such as enums.
Yeti
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Re: pango or any other way to format text
On Mon, May 14, 2012 at 08:20:26PM +0800, Rudra Banerjee wrote: Can anybody please take some time to show me simple way of implementing pango formatting to get greek letters, subscripts and superscripts in gtk2+? What do you mean by ‘implementing Pango formatting'? I suppose you are not writing a Pango backend, i.e. you are not *implementing* any text rendering yourself. If you just want to use Pango to render Greek text, subscripts, superscripts, Cyrillic, math symbols or whatever, use UTF-8: GtkWidget *label = gtk_label_new(ἀπὸ τοῦ ἡλίου μετάστηθι); or GtkWidget *label = gtk_label_new(a² + b² = c²); That's it. Function gtk_label_set_markup() with Pango markup http://developer.gnome.org/pango/stable/PangoMarkupFormat.html can be used for more complex indexes and exponents and other stuff in labels. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GRegex regular expression failing to match
On Mon, May 14, 2012 at 01:36:02PM -0800, Christopher Howard wrote: Is there anything wrong with the regexp, Sure. Two things. It should be ^/[0-9]+$ not ^/d+$ First, it lacks the backslash to make \d a digit atom. But, second, since \d matches a digit (possibly whatever Unicode may say is a digit), not 0-9, you should really use [0-9] to match ASCII digits. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: clarification: GErrors and GQuarks
On Thu, May 10, 2012 at 04:45:09PM -0800, Christopher Howard wrote:
Quick glib question here: I've been getting into glib's error reporting
system and trying to integrate it into some code. (My code is using
glib, but not GTK+ itself.) Overall it seems rather straightforward, but
there was one point I was hoping for clarification on:
In the g_set_error() parameters, the domain parameter is a GQuark.
Does this mean that I am supposed to use something like
g_quark_from_string (MODULE_ERROR_DOMAIN_NAME) for that parameter each
time I call g_set_error?
That would make sense, from what I've read in the GQuark part of the
API. But I'm a little confused because the example given in the API for
g_set_error() usage does not do this. (In the example, they just pass in
some mysterious constant of unexplained origin.)
The mysterious constants follow the common usage pattern. For Bar in
package Foo, header:
#define FOO_BAR_ERROR foo_bar_error_quark()
GQuark foo_bar_error_quark(void) G_GNUC_CONST;
typedef enum {
FOO_BAR_ERROR_BAD_WHATEVER...
} FooBarError;
and code:
GQuark
foo_bar_error_quark(void)
{
return g_quark_from_static_string(foo-bar-error-quark);
}
You then do
g_set_error(error, FOO_BAR_ERROR, FOO_BAR_ERROR_BAD_WHATEVER, ...);
Yeti
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Re: How to generate event explicit (through code) ?
On Mon, Apr 23, 2012 at 05:16:52PM +0530, Leena Chourey wrote: I want the focus to move selection/focus from one icon to another automatically on single key press. I have tried to just run key_press event code in a loop, but the selection is not moving from one to another, it is directly coming to the last item. it requires a h/w interruption (key_press) . As I understood, I need to generate the event key_press explicitly in the loop every time. How to generate gtk_event explicitly without any (h/w) key press? I must admit that I do not actually understand what you are trying to achieve (namely why you try to emulate key events). Anyway: Common keyboard control is usually defined by bindings, see GtkBindingSet for start. Maybe you just need to define bindings for the required keys to make them move the selection. If you want something special that does not correspond to the common movements then register a key-press-event callback for the widget and in that callback run gtk_widget_grab_focus() to move the focus where you want, gtk_icon_view_select_path() to set the icon view selection, etc. Return TRUE from the callback (most likely). You might also want to manipulate the selection/focus by invoking action signals of the wiget, e.g. the move-cursor signal for GtkIconView. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Replace context menu of GTK applications
On Mon, Apr 23, 2012 at 08:18:05PM +0200, Simon Schneegans wrote: I asked this question on another mailing list. There I got the hint to ask here, maybe you can help me! I'm going to write my bachelor thesis on different menu types (e.g. Pie Menus). For this reason I'd like to replace the context menu of GTK applications (the menu opened by right-clicking). I don't want to recompile those applications, some kind of plugin technique would be awesome! I thought of two possible approaches: 1. - I know it's possible to do this with the main application menu (like all the different global menus are doing it). - So here's my question: Is that possible for context menus as well? Is there an API for this purpose? If so, what's the way to go? Documentation on this topic is very sparse... 2. - Write a GTK module and try to do it with some GObject fancyness. May this work? GtkMenuFoo classes use a number of internal Gtk+ calls and might not be reasonably replaceable from outside. So I suggest to simply change the implementation of menus in Gtk+ source code, recompile it and let programs use your modified Gtk+ (by setting LD_LIBRARY_PATH). This is trivial compared to your suggestions. In any case, you may run into some implicit assertions in the programs about how menus work. Also, there is no fundamental difference between application, context and whatever else menus. They are all GtkMenu widgets and programs may actually use a single GtkMenu object in different places. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: key press events holding keys down
On Mon, Mar 19, 2012 at 07:25:22PM +, Chris Vine wrote: Are you saying that on your hardware, holding one key down blocks press and release events for all other keys? I am not saying you are wrong, but I find that surprising. IMO Christopher observes this: 1) press A 2) press B while still holding A 3) release B while still holding A You get no auto-repeat key events for A after 3) even though you still hold it. The solution can be either using something more low level(?) or simply *NOT* getting your key events from Gdk key events and ignoring autorepeat altogether. (This is probably what has been – unclearly – already suggested.) You only use Gdk key events to get notifications that a key was pressed or released – and update the set of pressed keys. Then you use a timer to regularly observe what keys are in the set of pressed keys. And base the controls processing on what you find in the timer. NOT the Gdk key events themselves. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: noob question: g_signal_connect()
On Tue, Mar 06, 2012 at 10:07:16AM -0900, Christopher Howard wrote: Hi. I've installed the api documentation from the source code for both gtk+ and glib, but I can't seem to find an api description of g_signal_connect(). http://developer.gnome.org/gobject/stable/gobject-Signals.html#g-signal-connect -- g_signal_connect (G_OBJECT (button[0]), draw, G_CALLBACK (draw_callback), NULL); -- Could somebody please explain two things: 1) What is the purpose of the string in the second position in the parameter list? That is the signal name – the same as listed in Signals section in the description of each object. 2) What is the purpose of the fourth parameter slot, with the NULL in it? Can other options go there? It is a pointer that the callback function will get as its last argument. You can use it to pass additional data to the callback. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: TreeView tooltip use immediate control
On Fri, Feb 03, 2012 at 11:36:13PM +0100, Stefan Salewski wrote: How can I immediately activate or deactivate tooltips for all TreeView widgets on user action, i.e. menu operation. You can enable/disable all tooltips using the gtk-enable-tooltips GtkSettings property. But if you want to enable/disable them just for some specific of widgets you have to handle it yourself. The easiest method is probably making the widgets query your enable/disable setting in their query-tooltip signal handlers – and then return TRUE or FALSE from the handlers. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: no File, Edit, Help strings in upper left
On Sun, Jan 29, 2012 at 02:36:03PM -0800, Gary Kline wrote:
i've seen this and don't like it; i'd rather have every
Konsole have its own menubar. same with other GUI apps.
Me too but OS X does this. Aparrently, it does not matter nowadays
whether something makes sense or not but only whether OS X does it...
Some methods how to disable it are described here:
http://www.webupd8.org/2011/03/disable-appmenu-global-menu-in-ubuntu.html
In short, get rid of it globally:
sudo apt-get remove appmenu-gtk3 appmenu-gtk appmenu-qt
or disable it while running specific program:
UBUNTU_MENUPROXY= program args...
at least for ubuntu linux, i
need the `gtk-config --cflags [etc]`
You definitely do NOT need gtk-config. It was used in Gtk+ 1.x and has
been replaced with pkg-config.
it may be hthat ubuntu is moving toward gtk-3.0 and
dropping the older releases. {?}
It should not be directly related to these issues although Gtk+ 3.x
indeed will bring new methods to do unexpected things to menus.
For me this all means classical application menubars are dead and I will
not use them in newly written programs at all.
Yeti
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Re: discoveries! gtk DOES dim... how can i infinite-loop?
On Thu, Jan 19, 2012 at 12:58:09AM -0800, Gary Kline wrote: i've spent the last many days tryoing [on ubuntu] anf tonight on my EEE-900A netbook [debian]. both dim when i go into a recursive loop. 1. edit with gvim 2. have espeak voice gvim when it is written 3 goto 1; tonight i did everything absolutedly write in chercking various things, but the app still dimd if i have the function call itselg. i should have asked this list whether there there is a gtk call that let's things go into either an infinite loop, or, would a for() loop work for 300-500 loops? if not, i need to rethink my algorithm. That is probably what you have to do. If I understand what your code does (and how) then while gvim is running your app is *not*. Your app is blocked and waits until gvim terminates. The same for espeak. You need to use a function such as g_spawn_async() to execute it. Then it depends how you communicate with the programs. If you just want to know when it terminates use waitpid(). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: any easy way of having a YES/NO dialog return a 1 or 0?
On Tue, Jan 17, 2012 at 04:12:51PM +0900, Tristan Van Berkom wrote: Even in english, these boolean YES/NO questions can seem ambiguous, If you use wordy and convoluted questions such as Are you sure you want to quit without saving then nothing can help the poor users. Of course, they are also susceptible to mistranslation. The fix is brevity and clarity, not banning Yes and No. The question Does 2+2 equal 5? is not improved by buttons labels ‘It is five’ and ‘It is some other number’. Hence Are you sure you want to quit without saving ? Should typically have the answers: Save Quit is nonsense. This question should not occur in a sensible GUI no matter what answers are offered. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: how to have a dialog ask user if he want to type AGAIN?
On Sat, Jan 14, 2012 at 07:50:15PM -0800, Gary Kline wrote: ok, one function runs in a recursive loop, endlessly. i could do this differently, say from main. that is my question: how do i get the value 1 or TRUE back from a dialogue that asks simply: Talk again? Use the return value of gtk_dialog_run(); it returns GTK_RESPONSE_something depending on how the user responded. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: any easy way of having a YES/NO dialog return a 1 or 0?
On Sun, Jan 15, 2012 at 01:26:53PM -0800, Gary Kline wrote: is there a way of having a YES/NO dialog [that asks a qauestion] return a truth value? i'm looking for something like the macro eprint(...) that James Steward sent in late december. Use gtk_message_dialog_new() with GTK_BUTTONS_YES_NO buttons type. Your boolean is then equal to gtk_dialog_run(dialog) == GTK_RESPONSE_YES (which also runs the dialog but you can, of course, separate the execution and comparison). if i eventually figured out a similar marcro that included: GTK_STOCK_YES,1, GTK_STOCK_NO, 0... I don't understand what stock item names have to do with this. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Real time removal of toolitem
On Sat, Jan 14, 2012 at 12:34:10PM +, Neil Munro wrote:
I was wondering if it is possible to remove a tool item from a
toolbar instantly,
=
from gi.repository import Gtk
def modify(b, t):
if t.get_n_items() == 1:
b.set_stock_id(Gtk.STOCK_REMOVE)
b2 = Gtk.ToolButton.new_from_stock(Gtk.STOCK_HELP)
b2.show_all()
t.insert(b2, 1)
else:
b.set_stock_id(Gtk.STOCK_ADD)
t.get_nth_item(1).destroy()
print t.get_n_items()
w = Gtk.Window()
w.connect('destroy', Gtk.main_quit)
w.set_default_size(200,40)
t = Gtk.Toolbar()
w.add(t)
b = Gtk.ToolButton.new_from_stock(Gtk.STOCK_ADD)
b.connect('clicked', modify, t)
t.insert(b, 0)
w.show_all()
Gtk.main()
=
I have tried
to destroy the widget but it still works, am I missing something
Yes. Hard to tell what.
Yeti
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Re: RFC: UI design
On Tue, Jan 10, 2012 at 08:16:53PM +0100, Stefan Sauer wrote: On 01/09/2012 04:29 PM, Benjamin Otte wrote: Who gets to decide how an application looks? This question is aimed at theming and the question of graphic design[1] and not at intersection design[2]. The way I see it, there is two extremes to this: A) The application decides on the theme B) The platform decides on the theme C) the user decides on the theme. D) External constraints define the look. So you like dark pink background. Does it mean the PDF viewer should try to give the viewed documents dark pink background? Such question might sound silly in case of PDF viewers but I develop mainly scieng apps and here the boundary between controls and content is often much fuzzier. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: troubles porting from ubuntu to debian. [??]
On Mon, Jan 02, 2012 at 12:15:45PM -0800, Gary Kline wrote: main.c:157: warning: implicit declaration of function âchdirâ main.c:362: warning: implicit declaration of function âsleepâ Declared in unistd.h. Forgot to include it? main.c: In function âinc_button_click_cbâ: main.c:242: warning: implicit declaration of function âgtk_widget_is_sensitiveâ ... Here is the code that has gtk_widget_is_sensitive(). i gave up on this after a couple hours [last night]. gtk_widget_is_sensitive() appeared in Gtk+ 2.18. Use devhelp or look at the on-line reference documentation to see when a specific symbol appeared. Use gtkdoc-depscan to scan your source code for functions that are available only since a specific Gtk+ version. Use GTK_WIDGET_IS_SENSITIVE() for compatibility with older Gtk+. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: troubles porting from ubuntu to debian. [??]
On Mon, Jan 02, 2012 at 02:42:43PM -0800, Gary Kline wrote: could you please explain more about this macro and how to resolve the complaint? Use GTK_WIDGET_IS_SENSITIVE() instead of gtk_widget_is_sensitive(). as you note, things do only now frown using the macro def: main.c:243: warning: implicit declaration of function âGTK_WIDGET_SET_SENSITIVEâ main.c: In function âdec_button_click_cbâ: how the heck to i fix that warning that GTK_WIDGET_IS_SENSITIVE() IS *implicit*? GTK_WIDGET_SET_SENSITIVE is not GTK_WIDGET_IS_SENSITIVE. GTK_WIDGET_SET_SENSITIVE does not exist, there has always been a function for this: gtk_widget_set_sensitive(). Also note there are two kinds of functions: the -get-/-set- kind and the -is- kind, the former for querying/setting whether the widget can be sensitive and the latter for querying whether it actually is sensitive. See the documentation. this program works on ubuntu 11.10 which is a direct fork of debian. i was certain it would work on my laptop whivh has the latest debian. Ubuntu contains a newer verison of Gtk+. You cannot expect a program developed with a newer version to work with an older version unless you take care to use only functions that are present in the older version. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK app with scrolled window crashing trying to show a widget inside
On Fri, Dec 30, 2011 at 01:28:32PM +0100, Moritz Renftle wrote: i want to make one of those widgets visible from another thread Use glib.idle_add() in that other thread to subsequently execute the actual Gtk+ code in the thread running the Gtk+ main loop. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: focus line pattern around gtk event box
On Tue, Dec 20, 2011 at 11:24:44AM +0530, Guruprasad Bhat wrote: When I set the focus line pattern in rc file, dotted border comes around button widgtes, entry widgets when focus comes on that. But for event box, layout, even though i set Can focus flag TRUE focus in indication is not appearing. How I can get the visual indication of focus in for gtk event box, gtk layout. Early suggestion appreciated. Using gtk_paint_focus() in the draw handler to draw it if the widget has focus. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: focus line pattern around gtk event box
On Tue, Dec 20, 2011 at 10:43:43PM +1100, Andrew Cowie wrote: On Tue, 2011-12-20 at 09:25 +0100, David Nečas wrote: Using gtk_paint_focus() in the draw handler... Deprecated now, apparently; refers to http://developer.gnome.org/gtk3/3.3/GtkStyleContext.html#gtk-render-focus instead. No, I just mixed up Gtk+ 2 and 3 functions (sorry for that). gtk_paint_focus() is the correct method to draw focus in Gtk+ 2, but you do this in expose-event handler. Use gtk_render_focus() in draw handler if you use Gtk+ 3. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to extend a widget?
On Fri, Dec 16, 2011 at 04:09:54PM -0700, Michael Torrie wrote: 1. Copy an entire GTK widget and give it a unique name. Example: GtkButton becomes GtkMyButton You really could Create a GtkMyButton by inheriting from GtkButton and adding your own code. However, just as in C++, the ability to override specific methods depends on whether they were made as virtual or static methods. static methods can't be overridden, but you could just shadow them with your own methods and use them instead. I wish it was so. What invariably happens in practice is this: (a) You find that the widget implementation either provides some library-level-private _gtk_button_foo() methods or depends on such methods. This is the absolutely worst case because it can easily prevent even copying the code and creating a similarly behaving widget if it needs to use these functions. Unfortunately quite common. (b) Other code in Gtk+ calls the static methods. This means that you cannot substitute your derived widget for the base class if you need different behaviour (but you can happily use the derived widget in your own code). Apparently quite rare, possibly because the devs usually convert this to (a) by making the static method library-private. (c) To extend the virtual methods you would need to access parent widget state which is private. So you need to copy the implementation. If you do not run in to (a) or (b) then consider yourself lucky. Note I do not talk about trivial extensions such as those you posted. Could you write GtkToggleButton derived from GtkButton if it did not exist? Nope. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Usage of gtk_list_store_set_valuesv()
On Sat, Dec 10, 2011 at 08:16:39PM +0100, Antonio Weber wrote: I'm trying to write a small app which uses a GtkTreeView to display a table. For some reason it does not work as expected so I extracted my usage in a small tableTest app (which a attach to this mail). You bind all view columns to model column 0. So they all display the data in column 0. See your gtk_tree_view_column_new_with_attributes(). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Why cani i initialize prefix with a default string?
On Fri, Dec 09, 2011 at 05:40:09PM -0800, Gary Kline wrote: guys, i am appending a piece of gtk test code. it saves the internal filename buffer for espeak -f %s ifbuf to run on--to be the user's voice. if i set static char *prefix = talk; then back up and enter another string in the box at the bottom, strange things happen. Anybody know where i am messing up? Strange things most likely occur after attempting to free the const string in entry_changed_cb() g_free(prefix); which was fine if prefix was NULL initially. You can use -Wwrite-strings to catch that. Unforutnately, passing constant strings as various user-data-kind arguments or to g_hash_table_insets() then produces warnings too. Also learn to use valgrind; it would show you this problem immediately. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GObjectClass.dispose and bringing objects back to life
On Sun, Dec 04, 2011 at 01:40:58PM +, Emmanuele Bassi wrote: this is, of course, not true: GNOME is full of badly written GObject code, mostly because it has been written at various stages of the learning process of various people. plus, the documentation is not entirely clear in a lot of places, thus the learning process can (and effectively is) broken. ... objects should obviously not be in a fully functional state after dispose - but they should be in a stable state, so that other objects referencing them from outside of the boundaries of their code space can still hold a valid reference to them, until such time that every reference can be released. So, who thinks this idea is not actually inherently inconsistent please please specify in the documentation, based on your rationale, how are objects supposed to behave in the disposed state. Namely with respect to (not) keeping impossible invariants, returning nontrivial no-longer-available values, methods that normally create or acquire something before returning it and other practical issues. Or say that there can be certain things the object owners may not do with disposed objects. Or anything. This The object is also expected to be able to answer client method invocations (with possibly an error code but no memory violation) until finalize is executed. has as, a practical guide, approximately the same value as ‘people should live together in peace’. Thank you in advance, Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Displaying domain objects with GtkTreeView
On Fri, Dec 02, 2011 at 03:55:51PM +0100, Rafał Krupiński wrote: I rather meant to use my object as a model for a whole, multi-column row, somehow binding fields or properties to columns. It makes no sense (to me anyway) to imagine one object as multiple *model* columns. But it is easy to create an arbitrary M:N mapping between model rows and view rows using the cell data functions, see gtk_cell_layout_set_cell_data_func() which is probably the binding you are looking for. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Displaying domain objects with GtkTreeView
On Thu, Nov 24, 2011 at 04:30:25PM +0100, Rafał Krupiński wrote: How do I display list of custom objects in GtkTreeView? GtkTreeView takes GtkListStore as a model, but it doesn't allow custom objects, only list of gobjects. On the other hand, when I want to read list's selection all I get is the GtkListStore model - list of gobjets and I have to figure out the actual domain object the data comes from. I thought of adding a hidden column with some id, but maybe there is a better solution? What are you talking about? You can pass any GObject-derived type as the column type (not that it matters much, the net result is the same as passing G_TYPE_OBJECT). You get back the objects that you stored there. If you store objects of different classes to the same column and want to know the precise type use RTTI: type macros such as MY_IS_FOO(), G_TYPE_FROM_INSTANCE(), g_type_is_a(), etc. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkHScale: Jump-to-position by left-click instead of middle-click?
Was it really necessary to cross-post this question to *four* mailing lists? On Sat, Nov 19, 2011 at 07:55:59AM -0500, Phong Cao wrote: I use GtkHScale for the progress bar, which is responsible for updating the track progress allow user to move to different time position in the track. Everything works fine until now, except that I can not use left-click button to snap (or jump) to random position in the GtkHScale. Instead, I have to either drag or right-mouse-click. The following is a kluge, but I suppose if you want the first button to invoke the same response as the middle button it should be all right (written in Python for brevity): from gi.repository import Gtk def button1to2(scale, event): if event.button == 1: event.button = 2 return False adj = Gtk.Adjustment.new(0.0, 0.0, 1.0, 0.001, 0.01, 0) scale = Gtk.Scale.new(Gtk.Orientation.HORIZONTAL, adj) scale.set_round_digits(3) scale.connect(button-press-event, button1to2) scale.connect(button-release-event, button1to2) window = Gtk.Window() window.add(scale) window.set_default_size(400, -1) window.show_all() window.connect(destroy, Gtk.main_quit) Gtk.main() Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Is this a memory leak?
On Wed, Nov 09, 2011 at 02:38:44PM +0100, Traktor Toni wrote: Hi, I'm using librsvg-2. Just calling rsvg_init() rsvg_term() tells bytes possibly lost in valgrind at line g_type_init_with_debug_flags inside rsvg_init(). Do you use nip2.supp? Also, why is it still calling g_type_init_with_debug_flags even though I'm not compiling with any -g flag? g_type_init() is just an alias for g_type_init_with_debug_flags() with zero debug flags. So type initialisation always goes through g_type_init_with_debug_flags(). And the flags are GObject debugging flags they have nothing to do with the debugging info put into binaries by the C compiler. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: gtk and linux
On Thu, Nov 03, 2011 at 04:07:44AM -0400, Craig wrote: Is there a list of linux flavors like Ubuntu, KDE, Red Hat... that include or don't include gtk? Use distrowatch. It lists the packaged version of Gtk+ for every version of the distribtion. E.g. for Fedora: http://distrowatch.com/table.php?distribution=fedora and see the row labelled gtk+. Distros that do not package Gtk+ at all are very rare (mosty those not including any GUI whatsoever). And, let's say that a type of linux doesn't include gtk, how difficult is it for an average computer user to install gtk (on a scale of 1 to 10)? 8.47654138908745330124567, maybe 8.47654138908745330124568. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Severe treeview performance regression (Gtk2 - gtk3)
On Thu, Oct 20, 2011 at 09:45:10PM +0100, Lionel Landwerlin wrote: GtkList isn't based on treeview AFAIK Please look at the source code before making such remarks. Anyway, I was about to note that I observed the Gtk+3 version to be faster (both version from Fedora 15 packages). But then I realized that while Gtk+3 uses the default theme the Gtk+2 theme is Glider. After fixing that the subjective performance was pretty much the same. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: _wstat on Windows (actually stat stuff in general)
On Thu, Sep 29, 2011 at 10:05:57AM +0100, Emmanuele Bassi wrote: On 29 September 2011 09:57, Andrew W. Nosenko andrew.w.nose...@gmail.com wrote: On Thu, Sep 29, 2011 at 11:35, Tor Lillqvist t...@iki.fi wrote: I would say, bah. Any actively maintained (or recently written) GLib-using code that doesn't use GIO by now is just being maintained or written in a misguided fashion. Tor, did I understand your position right that any program written in the speed in minds and uses Glib is written in a misguided fashion? that's a fairly creative way of misinterpreting that sentence. if GIO is measurably slower at doing I/O than a stat(), please: file bugs along with profiling data. I wish GLib was the nice utility library it used to be. A utility library provides functionality people find useful; there is no agenda and consequently no need to tell people they are misguided if they just want to use the functionality they find useful and do not want use specific complex frameworks because they find them cumbersome. Yeti ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: configuration file, with dot or gnome structure
On Tue, Sep 13, 2011 at 01:43:06PM +0430, Mohsen Pahlevanzadeh wrote: You know that if install a package, may be it creates a directory in your home directory which begin dot. Such as .purple (pidgin appl) Recently i see many of appl such as evolution don't use this method and use .local .gnome2 .gnome or so on. I don't know different between them and don't know any idea on them, dot or gnoem configuration. I'm starting to write a appl with GTK and confused to decide dot method or gnome structure. if gnome structure is better, can you give me clue about its APIs? To follow XDG use g_get_user_config_dir(), g_get_user_data_dir() and similar functions to obtain the base directory names and use app-named subdirectories of that. The XDG scheme works for classic desktop applications. It makes much less sense though if your program has for instance files that are config, data and scripts at the same time and they are expected to be created and edited manually... (imagine bash for an extreme example). Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to detect when user scrolls
On Mon, Sep 05, 2011 at 02:37:32PM +0100, Andrew Wood wrote: However in the mainwindow is a GtkScrolledWindow, and although its detecting mouse movement over the display area, if the user is just moving the scrollbarsandnot doing anything else, as they would if reading through some text, it doesnt detect it. I've tried the following, on both the GtkScrolledWindow (browserscrolledview) and the mainwindow (GtkWindow) but to no avail: g_signal_connect(G_OBJECT(browserscrolledview),scroll-event,G_CALLBACK(userActive),NULL); //will be called when user scrolls in display area How do I detect when the scrollbars move? Connect to value-changed signal of the GtkScrolledWindow's adjustments. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Using the same model in two treeview and prevent selecting the same item?
On Wed, Aug 24, 2011 at 03:50:46PM +0200, Michal Suchanek wrote: I have a list which I want to display in two treeviews and prevent selecting the same item in both. The idea is that the user selects an item in the first list, then the second list is shown, and it should not contain the item selected in the first list (or the item should be inactive or whatever). I tried using a model filter to this end. It has an option to set custom filter callback and in this callback I fetch the selection of the first list (if any) and return false if the filtered item is the same as selected. I would just render the item as inactive using cell renderer's sensitive property and prevent it from being selected using gtk_tree_selection_set_select_function(). You need to remember the current selection but otherwise it is pretty cheap: if the selected row changes only two rows have to receive row-changed to update the other treeview: the previously selected one (becomes selectable) and the newly selected one (becomes unselectable). Also, depending on the application this might be visually preferrable to appearing and disappearing rows. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: HScale don't move
On Tue, Aug 09, 2011 at 02:24:30PM +0800, Xi Yang wrote: I changed both page size and page increment to 0, and the slider moves. However, why I get an initial value of 0, instead of 5? By changing the value property: property name=value5/property Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How can I get argc and argv from Gtk+ API?
On Tue, Aug 09, 2011 at 03:19:16PM +0800, zxx zxx wrote: I have some experience in Qt but not Gtk+. I can get argc and argv from Qt API when I develop application with Qt4: QCoreApplication::argc(); QCoreApplication::argv(); But I don't know how to get argc and argv from Gtk+ API when I develop application with Gtk+. Does anyone know how to get argc and argv from Gtk+ API? please tell me. You get argc and argv as arguments to your main() function as usual. Or from the GApplicationCommandLine argment passed to your command-line handler of GtkApplication/GApplication if you use the GApplication framework. Yeti ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
