fgDeactivateMenu could sometimes be called twice on the same menu, avoid

crash in that situation

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1524 7f0cb862-5218-0410-a997-914c9d46530a

diff --git a/src/fg_menu.c b/src/fg_menu.c
index 4f8e1a6..e60a5f8 100644 (file)
--- a/src/fg_menu.c
+++ b/src/fg_menu.c
@@ -679,6 +679,7 @@ GLboolean fgCheckActiveMenu ( SFG_Window *window, int button, GLboolean pressed,
 /*
  * Deactivates a menu pointed by the function argument.
  */
+static SFG_Menu* menuDeactivating = NULL;
 void fgDeactivateMenu( SFG_Window *window )
 {
     SFG_Window *parent_window = NULL;
@@ -690,6 +691,10 @@ void fgDeactivateMenu( SFG_Window *window )
     /* Check if there is an active menu attached to this window... */
     menu = window->ActiveMenu;
     freeglut_return_if_fail( menu );
+    /* Check if we are already deactivating this menu, abort in that case (glutHideWindow below can cause this function to be called again on the same menu..) */
+    if (menu==menuDeactivating)
+        return;
+    menuDeactivating = menu;
 
     parent_window = menu->ParentWindow;
 
@@ -717,6 +722,8 @@ void fgDeactivateMenu( SFG_Window *window )
         if( menuEntry->SubMenu )
             fghDeactivateSubMenu( menuEntry );
     }
+    /* Done deactivating menu */
+    menuDeactivating = NULL;
 
     fgSetWindow ( parent_window ) ;