Signature
glutVisibilityFunc(
function
)
Specify handler for GLUT 'Visibility' events
def handler( (int) state ):
return None
Parameters
| Variables | Description |
|---|---|
| func |
The new visibility callback function.
|
C Specification
void glutVisibilityFunc(void (*func)(int state));
Description
glutVisibilityFunc
sets the visibility callback for the current window. The visibility callback
for a window is called when the visibility of a window changes. The
state
callback parameter is
either
GLUT_NOT_VISIBLE
or
GLUT_VISIBLE
depending on the current visibility
of the window.
GLUT_VISIBLE
does not distinguish a window being totally versus partially visible.
GLUT_NOT_VISIBLE
means no part of the window is visible, i.e., until the window's visibility
changes, all further rendering to the window is discarded.
GLUT considers a window visible if any pixel of the window is visible or any pixel of any descendant window is visible
on the screen.
Passing
NULL
to
glutVisibilityFunc
disables the generation of the visibility
callback.
If the visibility callback for a window is disabled and later re-enabled, the visibility status of the window is
undefined; any change in window visibility will be reported, that is if you disable a visibility callback and re-enable
the callback, you are guaranteed the next visibility change will be reported.
Setting the visibility callback for a window disables the window status callback set for the window (and vice versa).
The window status callback is set with
glutWindowStatusFunc
.
glutVisibilityFunc
is deprecated in favor of the more informative
glutWindowStatusFunc
.
See Also
glutCreateWindow glutPopWindow glutWindowStatusFuncSample 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.
glutVisibilityFunc