Hi Bill,
Sorry for the late reply. I managed to get it working, now drawing
smoothly, properly double buffered.
I replaced the call which updates the window from being
setDamage(..) then draw() to just redraw() on the parent.
So thanks for the help!
VA.
Bill Spitzak wrote:
> Verena wrote:
>> I'm afraid I also tried making the parent window a DoubleBufferWindow,
>> but to no avail...
>> I'm using Fluid to generate the code for the window and it is
>>
>> fltk::DoubleBufferWindow* o = graphicsWin_ = new
>> fltk::DoubleBufferWindow(600, 620, "The Parent Window");
>> w = o;
>> o->type(241);
>> o->set_vertical();
>> o->color((fltk::Color)0xffffff00);
>> o->callback((fltk::Callback*)cb_graphicsWin_, (void*)(this));
>> o->begin();
>> /* some menus... */
>> /* my own child widget, derived from Widget: */
>> Canvas* my_canvas = new Canvas(false, 0, 0, 20, 600, 600, "label");
>> my_canvas->set_vertical();
>> o->end();
>> o->resizable(my_canvas);
>>
>> Is that all sane? I'm unsure what type 241 is...
>> All drawing happens in the draw() method of my Canvas, a redraw is
>> regularly forced by calling
>> the_canvas->set_damage(DAMAGE_CONTENTS);
>> the_parent->draw();
>>
>> Any ideas?
>> Thanks!
>
> I suspect calling redraw() inside the draw() method is messing it up.
>
> Try instead replacing the fltk::run() call with:
>
> while (1) {
> thecanvas->redraw();
> fltk::check();
> }
>
> which is equivalent.
>
> However the "redraw() inside draw()" method is well known due to it
> being the way you got that in glut and probably should be supported.
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