1 /* grab-ximage.c --- grab the screen to an XImage for use with OpenGL.
2 * xscreensaver, Copyright (c) 2001, 2003, 2004 Jamie Zawinski <jwz@jwz.org>
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation. No representations are made about the suitability of this
9 * software for any purpose. It is provided "as is" without express or
13 #ifndef __GRAB_XIMAGE_H__
14 #define __GRAB_XIMAGE_H__
16 /* Returns an XImage structure containing an image of the desktop.
17 (As a side-effect, that image *may* be painted onto the given Window.)
18 This XImage will be 32 bits per pixel, 8 each per R, G, and B, with the
19 extra byte set to 0xFF.
21 XImage * screen_to_ximage (Screen *screen, Window window,
22 char **filename_return);
24 /* Like the above, but loads the image in the background and runs the
25 given callback once it has been loaded.
27 void fork_screen_to_ximage (Screen *screen, Window window,
28 void (*callback) (Screen *, Window, XImage *,
34 #endif /* __GRAB_XIMAGE_H__ */