Am 20.10.2014 13:26, schrieb Philippe Coatmeur:
Hello Harry;
On 20/10/14 09:07, Harry van Haaren wrote:
Most NTK widgets that have a "value" like a slider or a dial, derive
from a base class that implements value() and value( float );
What this means for a widget, is that in order to change the value of
a widget called "wid", we do this:
wid->value( 0.0f ); // sets widget value to 0
Oh, I get that, believe me. The info I need is around that ; I wish
your sentence had started earlier, like so "in port_event(), given
/this/ class declared like /this/ and an objet wid instantiated like
/this/, we do this (...)"
From my port_event() I point to my UI object via the LV2UIHandle. this
object is a NTK widget (or so I hope, read on). So if I get a:
error: 'class KisWidget' has no member named 'value' (it's pretty
explicit)
It means the class KisWidget has no member named "value" I guess we
can agree on that ;)
It must be that I did not declare my Widget class as a proper NTK
widget. The declaration is at line 25 in this file
<https://bitbucket.org/xaccrocheur/kis/src/8c3a85a9899f117d2fa273b6c7948402d780fb46/widget.h?at=master>.
The instantiation of the widgets (a FL_Dial and 5 FL_Slider) is at
line 96 in this file
<https://bitbucket.org/xaccrocheur/kis/src/8c3a85a9899f117d2fa273b6c7948402d780fb46/widget.cpp?at=master>.
Now for the direct questions:
* Is it a proper NTK widget class declaration, that would expose a
value() method?
* Are those proper NTK widget class instances?
Thanks for your patience
--Phil
I never use FLTK, but I guess that is something essential.
You need to declare your control widgets in the class KisWidget, not in
the constructor of the class.
in class KisWidget write
Fl_Slider* ReleaseButton;
in the constructor Widget::Widget(void* parentXwindow) write
ReleaseButton = new Fl_Slider( 220,5,35,100,"Rel");
Then you could access the widget pointers in kis_gui.cpp like that
static void port_event(
self->widget->ReleaseButton->value(value);
ReleasButton is a NTK widget, not yourclass KisWidget.
(Just pseudo code here, it isn't exact syntax)
Still, I never use FLTK, I just wonder if you didn't need a
deconstructor to delete the widgets instances which have created with
"new" ( Like you need to do in GTKmm)?
Did FLTK manage the memory?
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