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glutVisibilityFunc.man
Package: glut23-src.zip [view]
Upload User: xk288cn
Upload Date: 2007-05-28
Package Size: 4876k
Code Size: 2k
Category:
GIS program
Development Platform:
Visual C++
- ."
- ." Copyright (c) Mark J. Kilgard, 1996.
- ."
- .TH glutVisibilityFunc 3GLUT "3.7" "GLUT" "GLUT"
- .SH NAME
- glutVisibilityFunc - sets the visibility callback for the current window.
- .SH SYNTAX
- .nf
- .LP
- void glutVisibilityFunc(void (*func)(int state));
- .fi
- .SH ARGUMENTS
- .IP fIfuncfP 1i
- The new visibility callback function.
- .SH 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.
- .SH SEE ALSO
- glutCreateWindow, glutPopWindow
- .SH AUTHOR
- Mark J. Kilgard (mjk@nvidia.com)