/// <summary>
/// Sets the keyboard up (key release) callback for the current window.
/// </summary>
/// <param name="func">
/// The new keyboard up callback function. See <see cref="KeyboardUpCallback" />.
/// </param>
/// <remarks>
/// <para>
/// <b>glutKeyboardUpFunc</b> sets the keyboard up (key release) callback for the
/// current window. When a user types into the window, each key release matching
/// an ASCII character will generate a keyboard up callback. The <i>key</i>
/// callback parameter is the generated ASCII character. The state of modifier
/// keys such as Shift cannot be determined directly; their only effect will be on
/// the returned ASCII data. The <i>x</i> and <i>y</i> callback parameters
/// indicate the mouse location in window relative coordinates when the key was
/// pressed. When a new window is created, no keyboard callback is initially
/// registered, and ASCII key strokes in the window are ignored. Passing
/// <c>null</c> to <b>glutKeyboardUpFunc</b> disables the generation of
/// keyboard up callbacks.
/// </para>
/// <para>
/// During a keyboard up callback, <see cref="glutGetModifiers" /> may be called
/// to determine the state of modifier keys when the keystroke generating the
/// callback occurred.
/// </para>
/// <para>
/// To avoid the reporting of key release/press pairs due to auto repeat, use
/// <see cref="glutIgnoreKeyRepeat" /> to ignore auto repeated keystrokes.
/// </para>
/// <para>
/// There is no guarantee that the keyboard press callback will match the exact
/// ASCII character as the keyboard up callback. For example, the key down may
/// be for a lowercase b, but the key release may report an uppercase B if the
/// shift state has changed. The same applies to symbols and control characters.
/// The precise behavior is window system dependent.
/// </para>
/// <para>
/// Use <see cref="glutSpecialUpFunc" /> for a means to detect non-ASCII key
/// release.
/// </para>
/// </remarks>
/// <seealso cref="KeyboardUpCallback" />
/// <seealso cref="glutButtonBoxFunc" />
/// <seealso cref="glutCreateWindow" />
/// <seealso cref="glutGetModifiers" />
/// <seealso cref="glutIgnoreKeyRepeat" />
/// <seealso cref="glutKeyboardFunc" />
/// <seealso cref="glutMouseFunc" />
/// <seealso cref="glutSpaceballButtonFunc" />
/// <seealso cref="glutSpecialFunc" />
/// <seealso cref="glutSpecialUpFunc" />
/// <seealso cref="glutTabletButtonFunc" />
// GLUTAPI void APIENTRY glutKeyboardUpFunc(void (GLUTCALLBACK *func)(unsigned char key, int x, int y));
public static void glutKeyboardUpFunc([In] KeyboardUpCallback func) {
keyboardUpCallback = func;
__glutKeyboardUpFunc(keyboardUpCallback);
}
private static extern void __glutKeyboardUpFunc(KeyboardUpCallback func);
