Re: Gtk Pixmap and png

[Brett Granger <bdgranger alum mit edu>]

Arno wrote:
> RevX gmx at wrote:
>
> > Hi,
> >  
> I have found an other function : gtk_image_new_from_file. And with this 
> function, it's good. I don't know why but it's good.
>
> pixmap = gtk_image_new_from_file("../Back-prelight.png");
> gtk_toolbar_insert_item (GTK_TOOLBAR (toolbar),
>              "Back",
>              "bla bla",
>              NULL,
>              pixmap,
>              NULL,
>              NULL,
>              -1);


You have found the "right" answer for translucency -- GtkImage.  Pixmaps 
don't inherently handle translucency, so the best you can do is a solid 
pixmap with a mask, as you discovered in your experiments.  Images in 
GTK2 handle alpha.  The only issues to watch out for are on "older" 
networked/non-desktop displays where Images might be significantly 
slower than pixmaps.

--Brett