Fix XSelectWindow function (#1563)

diff --git a/MagickCore/xwindow.c b/MagickCore/xwindow.c
index 2a188cb40ff02c706962aae1aaaa776f7f3d0474..3cbebc39d7c002beacc34965b23bb57a34d2f401 100644 (file)
--- a/MagickCore/xwindow.c
+++ b/MagickCore/xwindow.c
@@ -9315,6 +9315,7 @@ static Window XSelectWindow(Display *display,RectangleInfo *crop_info)
   target_window=(Window) NULL;
   x_offset=0;
   y_offset=0;
+  (void) XGrabServer(display);
   do
   {
     if ((crop_info->width*crop_info->height) >= MinimumCropArea)
@@ -9383,6 +9384,7 @@ static Window XSelectWindow(Display *display,RectangleInfo *crop_info)
         break;
     }
   } while ((target_window == (Window) NULL) || (presses > 0));
+  (void) XUngrabServer(display);
   (void) XUngrabPointer(display,CurrentTime);
   (void) XFreeCursor(display,target_cursor);
   (void) XFreeGC(display,annotate_context);