trying to combine pixmaps

[Travis Loyd <lelandg usa net>]

Without a good understanding of masks or gdk I've been able to combine 2
pixmaps but can't add any more to the result. Also in this code I get
warnings about gc not equalling null ... don't know what that is about
either. 3) If I add a variable GdkBitmap *mask3; after mask2 the resulting
picture is different....... overflowing somewhere.

Main question: I need to add a few xpms to one origional xpm which is
simply a solid color.

If there are really obvious problems help would be very very much
appreciated!

Travis Loyd
[email: lelandg@usa.net							]
[other: s201635@mail.nwmissouri.edu					]
[  pgp: send email with subject: sendmepgp				]

------CUT HERE-----------------------------------------------------------
#include <gtk/gtk.h>

#include "default0.xpm"
#include "default1.xpm"
#include "wall_e.xpm"
#include "wall_n.xpm"

void main(int argc, char *argv[]) {
	GtkWidget *window;
	GtkWidget *pixmap1;
	GtkWidget *pixmap2;
	GdkPixmap *gdk_pixmap1;
	GdkPixmap *gdk_pixmap2;
	GdkBitmap *mask1;
	GdkBitmap *mask2;
	GtkStyle *style;
	GdkGC *gc;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_signal_connect(GTK_OBJECT(window), "delete_event",
			GTK_SIGNAL_FUNC(gtk_exit), NULL);
	gtk_signal_connect(GTK_OBJECT(window), "destroy",
			GTK_SIGNAL_FUNC(gtk_exit), NULL);

	gtk_widget_realize(window);

//	style = gtk_widget_get_style(window);
//	gc = gdk_gc_new((GdkWindow*)window);
//	gc = style->white_gc;
	gc = NULL;

	gdk_pixmap2 = gdk_pixmap_create_from_xpm_d(
			window->window, &mask1,
			&style->bg[GTK_STATE_NORMAL], default0_xpm);

	gdk_pixmap1 = gdk_pixmap_create_from_xpm_d(
			window->window, &mask2,
			&style->bg[GTK_STATE_NORMAL], wall_e_xpm);

	/* Combine 2 images here */

	gdk_draw_pixmap(gdk_pixmap1, NULL, gdk_pixmap2, 0, 0, 0, 0, 40, 40);

	/* Load up another image to add to the same image */

//*************************** RIGHT HERE ******************************
//	gdk_pixmap1 = gdk_pixmap_create_from_xpm_d(
//			window->window, &mask2,
//			&style->bg[GTK_STATE_NORMAL], default1_xpm);
//
//	gdk_draw_pixmap(gdk_pixmap2, NULL, gdk_pixmap1, 0, 0, 0, 0, 40, 40);

	/* Put image to a pixmap */

	pixmap1 = gtk_pixmap_new(gdk_pixmap1, mask1);

	gtk_widget_show(pixmap1);

	gtk_container_add(GTK_CONTAINER(window), pixmap1);

	gtk_widget_show(window);

	gtk_main();
}