/// <summary>
/// Sets the window status callback for the current window.
/// </summary>
/// <param name="func">
/// The new window status callback function. See
/// <see cref="WindowStatusCallback" />.
/// </param>
/// <remarks>
/// <para>
/// <b>glutWindowStatusFunc</b> sets the window status callback for the current
/// window. The window status callback for a window is called when the window
/// status (visibility) of a window changes. The state callback parameter is one
/// of <see cref="GLUT_HIDDEN" />, <see cref="GLUT_FULLY_RETAINED" />,
/// <see cref="GLUT_PARTIALLY_RETAINED" />, or <see cref="GLUT_FULLY_COVERED" />
/// depending on the current window status of the window. <i>GLUT_HIDDEN</i>
/// means that the window is either not shown (often meaning that the window is
/// iconified). <i>GLUT_FULLY_RETAINED</i> means that the window is fully
/// retained (no pixels belonging to the window are covered by other windows).
/// <i>GLUT_PARTIALLY_RETAINED</i> means that the window is partially retained
/// (some but not all pixels belonging to the window are covered by other
/// windows). <i>GLUT_FULLY_COVERED</i> means the window is shown but no part of
/// the window is visible, i.e., until the window's status changes, all further
/// rendering to the window is discarded.
/// </para>
/// <para>
/// GLUT considers a window visible if any pixel of the window is visible or any
/// pixel of any descendant window is visible on the screen.
/// </para>
/// <para>
/// GLUT applications are encouraged to disable rendering and/or animation when
/// windows have a status of either <i>GLUT_HIDDEN</i> or
/// <i>GLUT_FULLY_COVERED</i>.
/// </para>
/// <para>
/// Passing <c>null</c> to <b>glutWindowStatusFunc</b> disables the generation of
/// the window status callback.
/// </para>
/// <para>
/// If the window status callback for a window is disabled and later re-enabled,
/// the window status of the window is undefined; any change in window window
/// status will be reported, that is if you disable a window status callback and
/// re-enable the callback, you are guaranteed the next window status change will
/// be reported.
/// </para>
/// <para>
/// Setting the window status callback for a window disables the visibility
/// callback set for the window (and vice versa). The visibility callback is set
/// with <see cref="glutVisibilityFunc" />. <b>glutVisibilityFunc</b> is
/// deprecated in favor of the more informative <b>glutWindowStatusFunc</b>.
/// </para>
/// </remarks>
/// <seealso cref="WindowStatusCallback" />
/// <seealso cref="VisibilityCallback" />
/// <seealso cref="glutCreateWindow" />
/// <seealso cref="glutPopWindow" />
/// <seealso cref="glutVisibilityFunc" />
// GLUTAPI void APIENTRY glutWindowStatusFunc(void (GLUTCALLBACK *func)(int state));
public static void glutWindowStatusFunc([In] WindowStatusCallback func) {
windowStatusCallback = func;
__glutWindowStatusFunc(windowStatusCallback);
}
private static extern void __glutWindowStatusFunc(WindowStatusCallback func);
