Signature
glutCreateMenu(
func
)
Create a new (current) menu, return small integer identifier
func( int ) -- Function taking a single integer reflecting
the user's choice, the value passed to glutAddMenuEntry
return menuID (small integer)
Parameters
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 glutAttachMenuSample Code References
The following code samples have been found which appear to reference the functions described here. Take care that the code may be old, broken or not even use PyOpenGL.
glutCreateMenu