private void DragButton_Click(object sender, RoutedEventArgs e)
{
if (Owner == null)
{
return;
}
var opaque = (sender as ToggleButton).IsChecked.Value;
Owner.IsHitTestVisible = opaque;
var hwnd = new WindowInteropHelper(Owner).Handle;
if (opaque)
{
WindowsServices.SetWindowExOpaque(hwnd);
}
else
{
WindowsServices.SetWindowExTransparent(hwnd);
}
e.Handled = true;
}
private void Window_SourceInitialized(object sender, EventArgs e)
{
var hwnd = new WindowInteropHelper(this).Handle;
WindowsServices.SetWindowExTransparent(hwnd);
}