date:20080901

Code Example: FunTextField

2008-09-01 Thread Yung-Luen Lan

FunTextField is provided as an example of NSTextInput protocol.
Moreover, it also shows how to lay text along arbitrary path. (Thanks
to Brad Cox's DrawKit.)

Download:
http://yllan.org/code/

What is FunTextField:
http://yllan.org/blog/archives/285

My article on NSTextInput:
http://yllan.org/blog/archives/231

Regards,
yllan
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Re: Image in NSOutlineView

2008-09-01 Thread chaitanya pandit

The right place to change the image of the cell would be in the  
outlineView's delegate method:
- (void)outlineView:(NSOutlineView *)outlineView willDisplayCell: 
(id)cell forTableColumn:(NSTableColumn *)tableColumn item:(id)item


 try [[cell image] name] to get the name of the image
-chaitanya

On 29-Aug-08, at 5:41 PM, [EMAIL PROTECTED] wrote:


Hi all,
I'm trying to develop an application that uses an OutlineView in  
which it
displays items like a disclosure triangle, then one checkbox, then a  
text

field int the same column. For that I gone through the
DragNDropOutlineview example provided with Xcode. Then I copied the
ImageAndTextCell class and uses two images, one is checked and other  
is

unchecked. Now the application works with  showing one image.I want to
change the image when clicking on it. How can I do that ?. In which  
method

I want to write the code ?
In outlineViewSelectionDidChange method I wrote some code but it  
faild.

When I taking the information about image like:
id cell = [[[OutlineView tableColumns] objectAtIndex:0]
dataCellForRow:[OutlineView selectedRow]];
id info = [cell image];
NSLog(@ %@,info);

It writes the log like:cell NSImage 0x17d8a0 Name=checkbox_click  
Size={13,

13} Reps=(
   NSBitmapImageRep 0x17e0c0 Size={13, 13}
ColorSpace=NSCalibratedRGBColorSpace BPS=8 BPP=32 Pixels=13x13
Alpha=NO Planar=NO Format=1 CGImage=0x17ded0.
How can i get the Image name only ?

Thanks in advance

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Re: Code Example: FunTextField

2008-09-01 Thread Uli Kusterer


On 01.09.2008, at 10:23, Yung-Luen Lan wrote:

(Thanks to Brad Cox's DrawKit.)



 That would be Graham Cox. Brad Cox is someone else entirely :-)

Cheers,
-- Uli Kusterer
The Witnesses of TeachText are everywhere...
http://www.zathras.de





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Help!

2008-09-01 Thread Michael Robinson


Hi

I need to use a NSTableView to control data input by the user.  The  
table has two columns, labeled Title and Content.  The number of  
columns is fixed.


I've read what I can find on the internet, but a lot of it goes way  
over my head (I'm fairly new at ObjC and xCode -- coming from Java).


I understand (from assorted hints I've seen online) that one may use a  
NSDictionaryController to handle data input/output/display/saving etc  
from a table.


I really have no idea how to do this, and haven't found a tutorial  
that speaks to my tiny brain.


I was hoping one of you Cocoa masters would have a tip or two?

This is what I've got:

a bunch of code that works (it creates html for a webpage based on  
user selection/input).  a NSTextArea, NSTextField and NSTableView that  
are currently inert.


A NSDictionaryController sitting idle.

I want it to store data in key(title)value(content) pairs.  Initially  
there are no key/vals, until the user creates a new entry.  This  
should be handled by a little '+' button that I've placed below the  
NSTableview.  Removal of the entries should be handled buy the '-'  
button at its side.


I feel confident that I could do all this, if I had any idea where to  
start.  How do I link the NSDict... to my *.m *.h files so that I  
can save/load/ otherwise manipulate the data?  How do I shove data  
into the nsdict?  Is it even an instance of nsdictionary?  Do I  
need to make an NSMutableDictionary and somehow introduce them to each  
other?


Any help would be appreciated, I'm stuck in a bit of a hole here.

Thanks,

Mike


We build our computer (systems) the way we build our cities: over  
time, without a plan, on top of ruins


-- Ellen Ullman

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how to delete the current user's directory?

2008-09-01 Thread XiaoGang Li

hi, list, I have an uninstaller application , which is used to delete
the files installed; and also i have a file which located in the current
user's directory, like the ~/Library/LaunchAgents/com..plist. and how
can i delete this kind of file, i have tried the
AuthorizationExecuteWithPrivileges
API, it seems not workable, do i give a wrong flag value or something else?
here is my code piece, any comments will be appreciated.

AuthorizationRef myAuthorizationRef;

AuthorizationFlags myFlags = kAuthorizationFlagDefaults;

AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment,myFlags,
myAuthorizationRef);

AuthorizationItem myItems = {kAuthorizationRightExecute, 0, NULL, 0};

AuthorizationRights myRights = {1, myItems};



myFlags = kAuthorizationFlagDefaults |

  kAuthorizationFlagInteractionAllowed |

  kAuthorizationFlagPreAuthorize |

  kAuthorizationFlagExtendRights;

AuthorizationCopyRights (myAuthorizationRef, myRights, NULL, myFlags, NULL);


char *fileDir = ~/Library/LaunchAgents/com.hp.printerAgent.plist;

char* args[3];

args[0]= -Rf;

args[1]= fileDir;

args[2]= NULL;


myFlags = kAuthorizationFlagDefaults;

OSStatus res = AuthorizationExecuteWithPrivileges(myAuthorizationRef,
/bin/rm,myFlags,args,NULL);

AuthorizationFree(myAuthorizationRef, myFlags);


and the res value is -60032. and by the way, how can i get the current
user's name string? which cocoa API can get it?
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Re: Increasing NSTextView's height

2008-09-01 Thread Graham Cox



On 1 Sep 2008, at 7:52 pm, chaitanya pandit wrote:

But even if i change the textView's frame by increasing it's height  
so that it occupies the bottom most subview, i don't see the  
vertical scroller. Am i missing something?



NSTextView doesn't have a vertical scroller on its own. If you put it  
inside an NSScrollView then it could do. (IB does set it up this way  
by default, did you create the view this way or programatically?).


Increasing frame height doesn't force a hidden scrollbar to show -  
having more text than can be shown in the frame does though, which  
implies that making the frame *smaller* would be the more likely way  
to go there.


Remember: frame size = area occupied in the parent view. bounds = area  
logically occupied by the text + any subviews. So it's the bounds you  
need to increase to ensure that any subviews are properly covered by  
it. If the bounds  frame, the scrollbars will show if there are any  
there that can be shown.


hth,

Graham
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QTCaptureConnectionEnabledAudioChannelsAttribute read only

2008-09-01 Thread Bram Loogman

Hi,

Currently I'm working with a DV camera to capture video using the
QTCapture class. Now I have a problem with processing the audio. When
I check the movie properties of the recorded movie in Quicktime it
tells me it contains 4 audio channels, 2 of them 'unused'. Now the
problem is that the movie converter I'm using, doesn't support movies
with 4 audio channels. I tried different DV cameras but they just act
normal, they output just a common stereo track. Apparently it has
something to do with this model, but I will have to use it anyway
since we already bought a couple of them.

So I was looking for a way to limit the the audio to two channels. I
found the QTCaptureConnectionEnabledAudioChannelsAttribute for a
QTCaptureConnection, but when I try

[connection 
attributeIsReadOnly:QTCaptureConnectionEnabledAudioChannelsAttribute]

it tells me that it is read only. I tried this for the
QTCaptureDeviceInput connections and the QTCaptureMovieFileOutput
connections, but none of them works. Although in the
QTCaptureConnection Reference it says: This attribute allows
applications to selectively disable certain audio channels from being
sent rhough the connection.
So I would like to know if there is a simple solution for my problem.

Thanks,
Bram Loogman
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Re: I know this is a Studio question .. but I really need some help

2008-09-01 Thread John Love


Please check out this link that I just this second found:

http://lists.apple.com/archives/applescript-studio/2008/Aug/msg2.html

.. and I just confirmed what this link stipulates .. nothing to do  
with length:


end script

on -- crash after the space following on

John Love
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On Sep 1, 2008, at 4:38 AM, Michael Robinson wrote:
I need to use a NSTableView to control data input by the user. The
table has two columns, labeled Title and Content. The number of
columns is fixed.

I understand (from assorted hints I've seen online) that one may use
a NSDictionaryController to handle data input/output/display/saving
etc from a table.

I would use an NSArrayController that stores instances of
NSDictionary. Each NSDictionary object will have a title key and a
content key.

Then, bind your first table column to the array controller's
arrangedObjects.title key the second column to the array
controller's arrangedObjects.content key.

Check out this tutorial for more information on setting up a table
view - it first walks through using the traditional, non-bindings
method, and then shows you how to use Cocoa Bindings for the task.
While the tutorial there uses a mail application as an example, it
*should* be close enough to point you in the right direction:

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