Re: Question about the GdkGC

[Olexiy Avramchenko <olexiy irtech cn ua>]

Tom Liu wrote:

> Ok I understand why create GdkGC and use GdkGC both need the GdkDrawable
> parameter because one created GC can apply to multiple window.
>
> But how about the performance?
Creating GC for each colour you have to draw is the fastest way, but I'm 
not sure this is
needed when you drawing some GDK primitives per second.

> I saw a program need to draw 10 color on a drawable. They just create 10
> GC! And they nevery release these GC.
> It this right way to do so? Should I create one GC and change the colors
> when need it?
I'd prefer to create a single and change colours. Memory is still not an 
infinite resource.
Just can't imagine the situation when setting colour to GC will be the 
bottleneck.

> I am a windows programmer, usually when I need to draw something in the
> window, I just get a gc, change color, draw, change color back, release
> gc.
Consider gtk_get_gc(), gtk_release_gc() functions:
http://developer.gnome.org/doc/API/2.0/gtk/gtk-Graphics-Contexts.html

> Looks gtk work like this. 
> 	Create multiple GC, use these when needed over and over again.