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

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crash in that situation


git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1524 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
dcnieho 2013-02-27 10:29:24 +00:00
parent 5fe69bdac1
commit 371adb260e
1 changed files with 7 additions and 0 deletions
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7
freeglut/freeglut/src/fg_menu.c
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@ -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 ) ;