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/* setrootbg.c - makes the current root background permanent.
* A modularized version of the function from the xsetroot program.
*
* 24.Oct.89 jimmc Initial definition (borrowed from xsetroot)
* 9.Jan.91 jimmc Pass dpy info as args instead of globals
*/
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#define Dynamic 1
void setrootbg(TDisplay,TScreen,TRootWindow,TDrawable)
Display *TDisplay;
Screen *TScreen;
Window TRootWindow;
Drawable TDrawable;
{
Atom prop,type;
int format;
unsigned long length,after;
unsigned char *data;
/* for root window, get rid of old root pixmap and colors
* and save new pixmap and colors.
* (this code borrowed from xsetroot)
*/
if (DefaultVisualOfScreen(TScreen)->class & Dynamic) {
prop = XInternAtom(TDisplay,"_XSETROOT_ID",False);
XGetWindowProperty(TDisplay,TRootWindow,prop,0L,1L,True,
AnyPropertyType,
&type,&format,&length,&after,&data);
if ((type == XA_PIXMAP) && (format == 32) &&
(length == 1) && (after == 0))
XKillClient(TDisplay, *((Pixmap *)data));
/* zap old colors */
else if (type != None)
Warn("_XSETROOT_ID property is garbage");
/* save colors used in pixmap */
XChangeProperty(TDisplay,TRootWindow,prop,XA_PIXMAP,32,
PropModeReplace,(unsigned char *)&TDrawable,1);
XSetCloseDownMode(TDisplay, RetainPermanent);
}
}
/* end */
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