/// <summary>
/// Ctor for a preview of this screensaver.
/// </summary>
/// <param name="displayWidth"></param>
/// <param name="displayHeight"></param>
/// <param name="parentWindowHandle"></param>
public PreviewWindow(int displayWidth,
int displayHeight,
IntPtr parentWindowHandle)
{
// Initializes the windows as view.
InitializeComponent();
previewWindowsViewModel =
new PreviewWindowViewModel();
DataContext = previewWindowsViewModel;
Width = displayWidth;
Height = displayHeight;
Left = 10;
Top = 10;
// Gets windows handle of this object and sets parent window.
IntPtr thisWindowHandle = new WindowInteropHelper(this).Handle;
Win32API.SetParent(thisWindowHandle, parentWindowHandle);
// Make this a child window, so when the select screensaver.
// Dialog closes, this will also close.
Win32API.SetWindowLong(thisWindowHandle,
-16,
new IntPtr(Win32API.
GetWindowLong(thisWindowHandle, -16) | 0x40000000));
}
private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
var newViewModel = e.NewValue as PreviewWindowViewModel;
this.viewModel = newViewModel;
if (newViewModel == null)
{
this.updateCornerImageSubscription?.Dispose();
}
else
{
this.updateCornerImageSubscription = newViewModel.PreviewImageServiceClient.WhenAnyValue(x => x.PreviewImage).Subscribe(_ =>
{
this.UpdateCornerImages();
});
}
}
public PreviewWindow(PreviewWindowViewModel vm)
{
_vm = vm;
InitializeComponent();
DataContext = _vm;
}