glutGetWindowData man page

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.

See Also

glutSetWindowData(3)

 

Referenced By

glutSetWindowData(3).

October 14, 2017