glutDisplayFunc man page

glutDisplayFunc — Sets the Display callback for the current window.

Library

OpenGLUT - windowcallback

Synopsis

#include <openglut.h>

void
glutDisplayFunc(void( *callback )( void ));

Parameters


callback


Client function for normal redisplay event.

Description

Sets the display callback for the


current window


. All windows, including subwindows,


must


have a display callback registered. OpenGLUT will call the


callback


function whenever it thinks that the window may require updating.

This callback is bound to the


current window


.

Caveats

Unlike most callbacks, it is illegal to try to disable the display callback by setting it to


NULL


.

Multiple redisplays may be coalesced into a single event for invoking the


callback


only once.

See Also

glutPostRedisplay(3) glutOverlayDisplayFunc(3)

 

Referenced By

glutInit(3), glutOverlayDisplayFunc(3), glutPopWindow(3), glutPostRedisplay(3), glutPostWindowRedisplay(3).