#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xrender.h>

Display *display;
int screen;
Window root, window = 0;
Picture picture;
XEvent event;

int main(int argc, char *argv[])
{
	display=XOpenDisplay(NULL);
	
	int render_event_base, render_error_base;
	int render_present=XRenderQueryExtension(display, &render_event_base, &render_error_base);
	
	screen=DefaultScreen(display);
	root=DefaultRootWindow(display);

	int visualCnt;
        XVisualInfo *visInfos = XGetVisualInfo(display, 0, NULL, &visualCnt);

	XVisualInfo info;
	info.screen = XDefaultScreen (display);
	info.depth = 32;
	visInfos = XGetVisualInfo (display, VisualScreenMask | VisualDepthMask, &info, &visualCnt);
	info = visInfos[0];

	XSetWindowAttributes winAttr;
	winAttr.colormap = XCreateColormap(display, root, info.visual, 0);
	winAttr.border_pixmap = XCreatePixmap(display, root, 1, 1, 32);
	winAttr.override_redirect = 1;
	
	window= XCreateWindow(display, root, 500, 0, 232, 86, 0,
		32, InputOutput,
		info.visual, 
		CWColormap | CWBorderPixmap| CWOverrideRedirect , &winAttr);
	
	XSelectInput (display, window, ExposureMask | KeyPressMask | ButtonPressMask);
	
	XRenderPictureAttributes pict_attr;
	XRenderPictFormat *fmt = XRenderFindStandardFormat(display, PictStandardARGB32);
	picture=XRenderCreatePicture(display, window, fmt, 0, &pict_attr);
	   
	while(1) {   
	  usleep(500000);
	  XFlush(display);
	 
	  XMoveWindow(display, window, rand()%1200, rand()%800);
	  XResizeWindow(display, window, rand()%200, rand()%200);
	  XMapWindow(display, window);
	  XFlush(display);
	   
	  XRenderColor color_yellow={.red=0xffff, .green=0xffff, .blue=0, .alpha=0x0fff};
	  XRenderFillRectangle(display, PictOpSrc, picture, &color_yellow, 0, 0, 1024, 1024);
	  XFlush(display);	
	
	  usleep(50000);
	  XUnmapWindow(display, window);
	  XFlush(display);
    }		  
	
	return 0;
}