/// <summary>
/// Hides close (X) button in top right window
/// </summary>
/// <param name="window"></param>
/// <param name="addClosingHook">
/// If true, adds delegate to Closing event which sets Cancel to true causing Window to note
/// close. Please note, calling Close() method will not close the window either.
/// </param>
internal static void HideCloseButton(this Window window, bool addClosingHook = false)
{
var hwnd = new WindowInteropHelper(window).Handle;
PInvoke.SetWindowLong(hwnd, PInvoke.GwlStyle,
PInvoke.GetWindowLong(hwnd, PInvoke.GwlStyle) & ~PInvoke.WsSysmenu);
if (addClosingHook)
{
// Cancel Closing event (if it occurs)
window.Closing += delegate(object sender, CancelEventArgs args) { args.Cancel = true; };
}
}
/// <summary>
/// Hides icon for window.
/// If this is called before InitializeComponent() then the icon will be completely removed from the title bar
/// If this is called after InitializeComponent() then an empty image is used but there will be empty space between
/// window border and title
/// </summary>
/// <param name="window">Window class</param>
internal static void HideIcon(this Window window)
{
if (window.IsInitialized)
{
window.Icon = BitmapSource.Create(1, 1, 96, 96, PixelFormats.Bgra32, null, new byte[] { 0, 0, 0, 0 }, 4);
}
else
{
window.SourceInitialized += delegate
{
// Get this window's handle
var hwnd = new WindowInteropHelper(window).Handle;
// Change the extended window style to not show a window icon
var extendedStyle = PInvoke.GetWindowLong(hwnd, PInvoke.GwlExstyle);
PInvoke.SetWindowLong(hwnd, PInvoke.GwlExstyle, extendedStyle | PInvoke.WsExDlgmodalframe);
// Update the window's non-client area to reflect the changes
PInvoke.SetWindowPos(hwnd, IntPtr.Zero, 0, 0, 0, 0,
PInvoke.SwpNomove | PInvoke.SwpNosize | PInvoke.SwpNozorder | PInvoke.SwpFramechanged);
};
}
}