table of contents
| GLUTGETWINDOWDATA(3) | Library Functions Manual (local) | GLUTGETWINDOWDATA(3) |
NAME¶
glutGetWindowData —
Get the user data for the current window
LIBRARY¶
OpenGLUT - window
SYNOPSIS¶
#include
<openglut.h>
void*
glutGetWindowData(void);
DESCRIPTION¶
This function will return whatever
void*
value is associated with the
current window
via glutSetWindowData(). This is
NULL
if you did not associate a pointer with your window. This can be useful in a situation where you have a single callback function performing services for many windows. You
could
keep track of the
window id
s in a global list and search for the
current window
in that list. But this is quicker than searching a data structure, and allows you to avoid the use of globals for this.