UNTITLED LOCAL UNTITLED
NAMEglutMouseWheelFunc — Sets the mouse wheel callback for the current win‐
dow.
LIBRARY
OpenGLUT - input
SYNOPSIS
#include <openglut.h>
void
glutMouseWheelFunc(void( *callback )( int wheel, int direction, int x,
int y ));
PARAMETERS
callback Client hook for mouse wheel events.
DESCRIPTION
If the mouse wheel is spun over your (sub)window, OpenGLUT will, in the‐
ory, report this via the MouseWheel callback. wheel is the wheel num‐
ber, direction is +/- 1, and x and y are the mouse coordinates.
If you do not register a wheel callback, wheel events will be reported as
mouse buttons.
This callback is bound to the current window .
CAVEATS
Due to lack of information about the mouse, it is impossible to implement
this correctly on X at this time. Use of this function limits the porta‐
bility of your application. (This feature does work on X, just not
reliably.) You are encouraged to use the standard, reliable mouse-button
reporting, rather than wheel events.
Windows created via glutCreateMenuWindow() always cascade keyboard and
mouse events to their parent.
SEE ALSOglutMouseFunc(3)
Epoch