glutCreateMenu

glutCreateMenu(3GLUT)                GLUT                glutCreateMenu(3GLUT)



NAME
       glutCreateMenu - creates a new pop-up menu.

SYNTAX
       int glutCreateMenu(void (*func)(int value));

ARGUMENTS
       func      The callback function for the menu that is called when a menu
                 entry from the menu is selected. The value passed to the
                 callback is determined by the value for the selected menu
                 entry.

DESCRIPTION
       glutCreateMenu creates a new pop-up menu and returns a unique small
       integer identifier. The range of allocated identifiers starts at one.
       The menu identifier range is separate from the window identifier range.
       Implicitly, the current menu is set to the newly created menu. This
       menu identifier can be used when calling glutSetMenu.

       When the menu callback is called because a menu entry is selected for
       the menu, the current menu will be implicitly set to the menu with the
       selected entry before the callback is made.

EXAMPLE
       Here is a quick example of how to create a GLUT popup menu with two
       submenus and attach it to the right button of the current window:

         int submenu1, submenu2;

         submenu1 = glutCreateMenu(selectMessage);
         glutAddMenuEntry("abc", 1);
         glutAddMenuEntry("ABC", 2);
         submenu2 = glutCreateMenu(selectColor);
         glutAddMenuEntry("Green", 1);
         glutAddMenuEntry("Red", 2);
         glutAddMenuEntry("White", 3);
         glutCreateMenu(selectFont);
         glutAddMenuEntry("9 by 15", 0);
         glutAddMenuEntry("Times Roman 10", 1);
         glutAddMenuEntry("Times Roman 24", 2);
         glutAddSubMenu("Messages", submenu1);
         glutAddSubMenu("Color", submenu2);
         glutAttachMenu(GLUT_RIGHT_BUTTON);

X IMPLEMENTATION NOTES
       If available, GLUT for X will take advantage of overlay planes for
       implementing pop-up menus. The use of overlay planes can eliminate
       display callbacks when pop-up menus are deactivated. The
       SERVER_OVERLAY_VISUALS convention is used to determine if overlay
       visuals are available.

SEE ALSO
       glutCreateWindow, glutDestroyMenu, glutSetMenu, glutAttachMenu

AUTHOR
       Mark J. Kilgard (mjk@sgi.com)



GLUT                                  3.2                glutCreateMenu(3GLUT)