(XlwMenuSetValues): Only frob the display if the menu is actually displayed.

1 files changed, 11 insertions, 9 deletions

diff --git a/lwlib/xlwmenu.c b/lwlib/xlwmenu.c
index 1ced18a5eb2..2239fb4b958 100644
--- a/lwlib/xlwmenu.c
+++ b/lwlib/xlwmenu.c
@@ -1813,15 +1813,17 @@ XlwMenuSetValues (current, request, new)
 
       redisplay = True;
       
-      for (i = 0; i < oldmw->menu.windows_length; i++)
-        {
-          XSetWindowBackground (XtDisplay (oldmw),
-                                oldmw->menu.windows [i].window,
-                                newmw->core.background_pixel);
-          /* clear windows and generate expose events */
-          XClearArea (XtDisplay (oldmw), oldmw->menu.windows[i].window,
-                      0, 0, 0, 0, True);
-        }
+      if (XtIsRealized (oldmw))
+        /* If the menu is currently displayed, change the display.  */
+        for (i = 0; i < oldmw->menu.windows_length; i++)
+          {
+            XSetWindowBackground (XtDisplay (oldmw),
+                                  oldmw->menu.windows [i].window,
+                                  newmw->core.background_pixel);
+            /* clear windows and generate expose events */
+            XClearArea (XtDisplay (oldmw), oldmw->menu.windows[i].window,
+                        0, 0, 0, 0, True);
+          }
     }
 
   return redisplay;