protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
this.hwndSource = (HwndSource)PresentationSource.FromVisual(this);
if (this.hwndSource == null)
{
return;
}
var ws = this.hwndSource.Handle.GetWindowLong();
var wsex = this.hwndSource.Handle.GetWindowLongEx();
ws |= WS.POPUP;
wsex &= ~WSEX.APPWINDOW;
wsex |= WSEX.TOOLWINDOW;
if (this._owner.ResizeMode == ResizeMode.NoResize || this._owner.ResizeMode == ResizeMode.CanMinimize)
{
wsex |= WSEX.TRANSPARENT;
}
this.hwndSource.Handle.SetWindowLong(ws);
this.hwndSource.Handle.SetWindowLongEx(wsex);
this.hwndSource.AddHook(this.WndProc);
this.handle = this.hwndSource.Handle;
this.ownerHandle = new WindowInteropHelper(this._owner).Handle;
this.resizeModeChangeNotifier = new PropertyChangeNotifier(this._owner, ResizeModeProperty);
this.resizeModeChangeNotifier.ValueChanged += this.ResizeModeChanged;
}
private void AttachHandlers(Flyout flyout)
{
var isOpenNotifier = new PropertyChangeNotifier(flyout, Flyout.IsOpenProperty);
isOpenNotifier.ValueChanged += FlyoutStatusChanged;
flyout.IsOpenPropertyChangeNotifier = isOpenNotifier;
var themeNotifier = new PropertyChangeNotifier(flyout, Flyout.ThemeProperty);
themeNotifier.ValueChanged += FlyoutStatusChanged;
flyout.ThemePropertyChangeNotifier = themeNotifier;
}
private void AttachVisibilityHandler(WindowCommandsItem container, UIElement item)
{
if (container != null)
{
if (null == item)
{
// if item is not a UIElement then maybe the ItemsSource binds to a collection of objects
// and an ItemTemplate is set, so let's try to solve this
container.ApplyTemplate();
var content = container.ContentTemplate?.LoadContent() as UIElement;
if (null == content)
{
// no UIElement was found, so don't show this container
container.Visibility = Visibility.Collapsed;
}
return;
}
container.Visibility = item.Visibility;
var isVisibilityNotifier = new PropertyChangeNotifier(item, UIElement.VisibilityProperty);
isVisibilityNotifier.ValueChanged += VisibilityPropertyChanged;
container.VisibilityPropertyChangeNotifier = isVisibilityNotifier;
}
}
public ToggleSwitchButton()
{
isCheckedPropertyChangeNotifier = new PropertyChangeNotifier(this, ToggleSwitchButton.IsCheckedProperty);
isCheckedPropertyChangeNotifier.ValueChanged += IsCheckedPropertyChangeNotifierValueChanged;
}
