Re: Need XOR drawing help

["Steve Usdansky" <usdanskys lrocketmail com>]

----- Original Message ----- 
From: Timothy M. Shead <tshead k-3d com>
To: Steven I Usdansky <usdanskys rocketmail com>
Cc: <gtk-app-devel-list gnome org>
Sent: Tuesday, April 17, 2001 10:35 AM
Subject: Re: Need XOR drawing help


> Steven I Usdansky wrote:
>
> > I'm looking to draw a small (7x7) plus sign on the screen in XOR mode
> > at a specific point.  The plus sign will be erased and redrawn at
> > different positions several times.  Looking over the Gdk API
> > documentation, I believe it's possible, but I have no idea how to go
> > about doing it.  Can anyone point me to a code snippet that might
> > help?  Thanks.
> >
> > Steve
>
>
> GdkColor color;
> color.red = gushort(m_EditorSelectorColor[0] * 0xffff);
> color.green = gushort(m_EditorSelectorColor[1] * 0xffff);
> color.blue = gushort(m_EditorSelectorColor[2] * 0xffff);
> gdk_color_alloc(gdk_colormap_get_system(), &color);
>
> // Create an XOR gc for drawing ...
> GdkGC* gc = gdk_gc_new(Widget->window);
> gdk_gc_set_foreground(gc, &color);
> gdk_gc_set_function(gc, GDK_XOR);
>
>
> Regards,
> Timothy M. Shead
> tshead k-3d com

Tim,

It worked well.  Thank you very much.

Steve