Le 26 mars 2015, Sergei Naumov a écrit :
Hmm. This is something I did not know I could do. But in this case I would have to redraw everything in the widget's drawing area which is my axes, tickmarks, labeles, etc... All right, I will try it this way because it is much simpler.
What I do in a similar situation is keeping a kind of carbon copy of the bare drawing:
- get two pixmaps from the drawing area : bare_pixmap=gdk_pixmap_new(d_area->window,width,height,-1); full_pixmap=gdk_pixmap_new(d_area->window,width,height,-1); - draw your "background" on bare_pixmap - when you have to redraw, just copy bare_pixmap to full_pixmap, add stuff to full_pixmap, then display it: gdk_draw_drawable(full_pixmap,copy_gc,bare_pixmap,0,0,0,0,-1,-1); (add stuff to full_pixmap) gdk_draw_drawable(d_area->window, copy_gc, full_pixmap, x, y, x, y, width, height); Where copy_gc has been defined this way: GdkGC *copy_gc=d_area->style->fg_gc[GTK_WIDGET_STATE (d_area)]; -- Lucas Levrel _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list