transient.c (847B) - raw

      1 /* cc transient.c -o transient -lX11 */
      2 
      3 #include <stdlib.h>
      4 #include <unistd.h>
      5 #include <X11/Xlib.h>
      6 #include <X11/Xutil.h>
      7 
      8 int main(void) {
      9 	Display *d;
     10 	Window r, f, t = None;
     11 	XSizeHints h;
     12 	XEvent e;
     13 
     14 	d = XOpenDisplay(NULL);
     15 	if (!d)
     16 		exit(1);
     17 	r = DefaultRootWindow(d);
     18 
     19 	f = XCreateSimpleWindow(d, r, 100, 100, 400, 400, 0, 0, 0);
     20 	h.min_width = h.max_width = h.min_height = h.max_height = 400;
     21 	h.flags = PMinSize | PMaxSize;
     22 	XSetWMNormalHints(d, f, &h);
     23 	XStoreName(d, f, "floating");
     24 	XMapWindow(d, f);
     25 
     26 	XSelectInput(d, f, ExposureMask);
     27 	while (1) {
     28 		XNextEvent(d, &e);
     29 
     30 		if (t == None) {
     31 			sleep(5);
     32 			t = XCreateSimpleWindow(d, r, 50, 50, 100, 100, 0, 0, 0);
     33 			XSetTransientForHint(d, t, f);
     34 			XStoreName(d, t, "transient");
     35 			XMapWindow(d, t);
     36 			XSelectInput(d, t, ExposureMask);
     37 		}
     38 	}
     39 
     40 	XCloseDisplay(d);
     41 	exit(0);
     42 }