change button-color

[Oliver Buecker <o buecker fz-juelich de>]

Hi,
can someone tell my why I'm not able to change the color of my button
???

    gc = gdk_gc_new(Logoffbutton->window);
    gdk_gc_set_background (gc, &color);
    gdk_gc_set_foreground (gc, &color);
    gtk_widget_show( Logoffbutton );
    gdk_gc_destroy(gc);

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Mit freundlichen Grüßen
Oliver Bücker

 Forschungszentrum Juelich
      52425 Juelich