/// <include file='doc\CommonDialog.uex' path='docs/doc[@for="CommonDialog.MoveToScreenCenter"]/*' />
/// <devdoc>
/// Centers the given window on the screen. This method is used by the default
/// common dialog hook procedure to center the dialog on the screen before it
/// is shown.
/// </devdoc>
internal static void MoveToScreenCenter(IntPtr hWnd)
{
NativeMethods.RECT r = new NativeMethods.RECT();
UnsafeNativeMethods.GetWindowRect(new HandleRef(null, hWnd), ref r);
Rectangle screen = Screen.GetWorkingArea(Control.MousePosition);
int x = screen.X + (screen.Width - r.right + r.left) / 2;
int y = screen.Y + (screen.Height - r.bottom + r.top) / 3;
SafeNativeMethods.SetWindowPos(new HandleRef(null, hWnd), NativeMethods.NullHandleRef, x, y, 0, 0, NativeMethods.SWP_NOSIZE |
NativeMethods.SWP_NOZORDER | NativeMethods.SWP_NOACTIVATE);
}