private static PenetrationProvider getPenetrationProviderFormPropertyMetadata(UIElement element)
{
var metadata = (DataPropertyMetadata <PenetrationProvider>)PenetrationProvider.IsPenetrateProperty.GetMetadata(element);
if (metadata.Data == null)
{
IntPtr handle;
if (element is Window)
{
handle = new WindowInteropHelper((Window)element).Handle;
}
else
{
if (PresentationSource.FromVisual(element) is HwndSource source)
{
handle = source.Handle;
}
else
{
return(null);
}
}
PenetrationProvider provider = new PenetrationProvider(handle);
provider.Initialize();
return(provider);
}
else
{
return(metadata.Data);
}
}
public static bool GetIsPenetrate(UIElement element)
{
if (element == null)
{
throw new ArgumentNullException(nameof(element));
}
PenetrationProvider.initializePenetrationProvider(element);
return((bool)element.GetValue(IsPenetrateProperty));
}
public static void SetIsPenetrate(UIElement element, bool value)
{
if (element == null)
{
throw new ArgumentNullException(nameof(element));
}
PenetrationProvider.initializePenetrationProvider(element);
element.SetValue(IsPenetrateProperty, value);
}
private static object IsPenetrateCoerceValueCallback(DependencyObject d, object baseValue)
{
UIElement element = (UIElement)d;
var provider = PenetrationProvider.getPenetrationProviderFormPropertyMetadata((UIElement)d);
bool targetIsPenetrate = (bool)baseValue;
if (provider != null && provider.UpdateWindowPenetration(targetIsPenetrate))
{
return(baseValue);
}
else
{
return(PenetrationProvider.GetIsPenetrate(element));
}
}
private static void initializePenetrationProvider(UIElement element)
{
PenetrationProvider.getPenetrationProviderFormPropertyMetadata(element);
}