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Man Pages


Manual Reference Pages  -  GLUTMENUSTATUSFUNC (3)

NAME

glutMenuStatusFunc - sets the global menu status callback.

CONTENTS

Syntax
Arguments
Description
See Also
Author

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 program 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 continue to operate (except mouse motion callbacks) when pop-up menus are in use so the menu status callback allows a program to suspend animation 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 window 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, glutCreateWindow

AUTHOR

Mark J. Kilgard (mjk@nvidia.com)
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GLUT GLUTMENUSTATUSFUNC (3GLUT) 3.7

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