GLUTDISPLAYFUNC

Section: C Library Functions (3)
Updated: LOCAL
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BSD mandoc

NAME

glutDisplayFunc - Sets the Display callback for the current window.

LIBRARY

OpenGLUT - windowcallback

SYNOPSIS

In openglut.h Ft void Fn glutDisplayFunc void( *callback )( void )

PARAMETERS

Bf Em
callback Ef
Client function for normal redisplay event.

DESCRIPTION

Sets the display callback for the Bf Li
current window Ef
. All windows, including subwindows, Bf Em
must Ef
have a display callback registered. OpenGLUT will call the Bf Sy
callback Ef
function whenever it thinks that the window may require updating.

This callback is bound to the Bf Li
current window Ef
.

CAVEATS

Unlike most callbacks, it is illegal to try to disable the display callback by setting it to Bf Sy
NULL Ef
.

Multiple redisplays may be coalesced into a single event for invoking the Bf Sy
callback Ef
only once.