glutForceJoystickFunc
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## Name

glutForceJoystickFunc — forces current window's joystick callback to be called.

## C Specification

`void `glutForceJoystickFunc`` | `(` | `);`

## Python Specification

``glutForceJoystickFunc`` | `(` | `) → `None``

## Description

`glutForceJoystickFunc` forces the current window's joystick callback to be called, reporting the latest joystick state.

The joystick callback is called either due to polling of the joystick at the uniform timer interval set by `glutJoystickFunc`'s `pollInterval` (specified in milliseconds) or in response to calling `glutForceJoystickFunc`. If the `pollInterval` is non-positive, no joystick polling is performed and the GLUT application must frequently (usually from an idle callback) call `glutForceJoystickFunc`.

The joystick callback will be called once (if one exists) for each time `glutForceJoystickFunc` is called. The callback is called from `glutJoystickFunc`. That is, when `glutJoystickFunc` returns, the callback will have already happened.

## Glut Implementation Notes For X11

The current implementation of GLUT for X11 supports the joystick API, but not actual joystick input. A future implementation of GLUT for X11 may add joystick support.

## Glut Implementation Notes For Win32

The current implementation of GLUT for Win32 supports the joystick API and joystick input, but does so through the dated joySetCapture and joyGetPosEx Win32 Multimedia API. The current GLUT joystick support for Win32 has all the limitations of the Win32 Multimedia API joystick support. A future implementation of GLUT for Win32 may use DirectInput.

## See Also

glutJoystickFunc

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