[Newbie] Despairence about Graphics Context.
- From: Jan Luehr <jluehr gmx net>
- To: gtk-list gnome org
- Subject: [Newbie] Despairence about Graphics Context.
- Date: Sun, 7 Jul 2002 18:50:04 +0200
Greetings,
I'm new to gtk, so please don't blame me.
I'm trying to paint a green square in an offscreen pixmap. My current
approach is:
GdkColor green; //Formulas
GdkGC gc;
GtkWidget *widget;
Pixmap *pixmap;
GdkColormap *map;
GdkColor color_green;
map = gdk_colormap_get_system(); // Get the System's colormap
gdk_color_parse("green",&color_green); //Get the color
gdk_colormap_alloc_color(map,&color_green); //Allocate it
gdk_draw_rectangle(pixmap,widget -> style -> black_gc,TRUE,30,30,20,20);
//Works fine.
gdk_gc_copy(&gc, widget -> style -> white_gc); //Causes a segmentation fault;
get the new context
gdk_gc_set_foreground(&gc, &color_green); //Set the color
gdk_draw_rectangle(pixmap,&gc,TRUE,1,1,20,20); //Draw the rectangle
What's wrong here?
Keep smiling
yanosz
--
GnuPG Key available at http://www.jluehr.de.vu/public_key.asc
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