Attachment 37594 Details for Bug 29412 – Testcase to demonstrate the problem

Testcase to demonstrate the problem

testcase.c (text/plain), 1.07 KB, created by Jon Turney on 2010-08-05 10:08:47 UTC

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Creator: Jon Turney

Created: 2010-08-05 10:08:47 UTC

Size: 1.07 KB

patch

obsolete

>
>#include <X11/X.h>
>#include <X11/Xlib.h>
>#include <assert.h>
>
>//
>// gcc -g -Wall -o testcase testcase.c -lX11
>//
>
>static int WindowExistsFlag;
>
>static int window_exists_err_handler( Display* dpy, XErrorEvent* xerr )
>{
>   (void) dpy;
>   if (xerr->error_code == BadWindow)
>     {
>       WindowExistsFlag = 0;
>     }
>   return 0;
>}
>
>static int window_exists( Display *dpy, Window win )
>{
>   XWindowAttributes wa;
>   int (*old_handler)(Display*, XErrorEvent*);
>
>   WindowExistsFlag = 1;
>   old_handler = XSetErrorHandler(window_exists_err_handler);
>   XGetWindowAttributes( dpy, win, &wa ); /* dummy request */
>   XSetErrorHandler(old_handler);
>
>   return WindowExistsFlag;
>}
>
>int main()
>{
>  int i;
>  Display *dpy = XOpenDisplay(NULL);
>  assert(dpy);
>
>  int blackColor = BlackPixel(dpy, DefaultScreen(dpy));
>
>  for (i = 0; i < 2; i++)
>    {
>      Window w = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 200, 100, 0, blackColor, blackColor);
>      XMapWindow(dpy, w);
>      XDestroyWindow(dpy, w);
>      XSync(dpy, 0);
>      window_exists(dpy, w);
>      XSync(dpy, 0);
>    }
>
>  return 0;
>}

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Attachments on bug 29412: 37594 | 37595

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