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7.10 glutSpaceballMotionFunc

  glutSpaceballMotionFunc sets the Spaceball motion callback for the current window.

Usage

void glutSpaceballMotionFunc(void (*func)(int x, int y, int z));
func
The new entry callback function.

Description

glutSpaceballMotionFunc sets the Spaceball motion callback for the current window. The Spaceball motion callback for a window is called when the window has Spaceball input focus (normally, when the mouse is in the window) and the user generates Spaceball translations. The x, y, and z callback parameters indicate the translations along the X, Y, and Z axes. The callback parameters are normalized to be within the range of -1000 to 1000 inclusive.

Registering a Spaceball motion callback when a Spaceball device is not available has no effect and is not an error. In this case, no Spaceball motion callbacks will be generated.

Passing NULL to glutSpaceballMotionFunc disables the generation of Spaceball motion callbacks. When a new window is created, no Spaceball motion callback is initially registered.



next up previous contents index
Next: 7.11 glutSpaceballRotateFunc Up: 7 Callback Registration Previous: 7.9 glutSpecialFunc



Mark Kilgard
Fri Feb 23 08:05:02 PST 1996