glutMenuStatusFunc(3GLUT) GLUT glutMenuStatusFunc(3GLUT)
NAME
glutMenuStatusFunc - sets the global menu status callback.
SYNTAX
void glutMenuStatusFunc(void (*func)(int status, int x, int y));
void glutMenuStateFunc(void (*func)(int status));
ARGUMENTS
func The new menu status (or state) callback function.
DESCRIPTION
glutMenuStatusFunc sets the global menu status callback so a GLUT pro-
gram can determine when a menu is in use or not. When a menu status
callback is registered, it will be called with the value
GLUT_MENU_IN_USE for its value parameter when pop-up menus are in use
by the user; and the callback will be called with the value
GLUT_MENU_NOT_IN_USE for its status parameter when pop-up menus are no
longer in use. The x and y parameters indicate the location in window
coordinates of the button press that caused the menu to go into use, or
the location where the menu was released (may be outside the window).
The func parameter names the callback function. Other callbacks con-
tinue to operate (except mouse motion callbacks) when pop-up menus are
in use so the menu status callback allows a program to suspend anima-
tion or other tasks when menus are in use. The cascading and unmapping
of sub-menus from an initial pop-up menu does not generate menu status
callbacks. There is a single menu status callback for GLUT.
When the menu status callback is called, the current menu will be set
to the initial pop-up menu in both the GLUT_MENU_IN_USE and
GLUT_MENU_NOT_IN_USE cases. The current window will be set to the win-
dow from which the initial menu was popped up from, also in both cases.
Passing NULL to glutMenuStatusFunc disables the generation of the menu
status callback.
glutMenuStateFunc is a deprecated version of the glutMenuStatusFunc
routine. The only difference is glutMenuStateFunc callback prototype
does not deliver the two additional x and y coordinates.
SEE ALSO
glutCreateMenu(3), glutCreateWindow(3)
AUTHOR
Mark J. Kilgard (mjk@nvidia.com)
GLUT 3.7 glutMenuStatusFunc(3GLUT)
Mac OS X 10.6 - Generated Thu Sep 17 20:20:41 CDT 2009