Attach window to window of another process

Question

My WPF application has more than one window, I want to attach some of these windows to a window of another process. My problem is that once I attach my window it becomes inv

Answer 1

I found that I could do this without even using the setParent call. I used HwndSource class as follows:

MyWindow window = new MyWindow();
window.ShowActivated = true;

HwndSourceParameters parameters = new HwndSourceParameters();

parameters.WindowStyle = 0x10000000 | 0x40000000;
parameters.SetPosition(0, 0);
parameters.SetSize((int)window.Width, (int)window.Height);
parameters.ParentWindow = newParent;
parameters.UsesPerPixelOpacity = true;
HwndSource src = new HwndSource(parameters);

src.CompositionTarget.BackgroundColor = Colors.Transparent;
src.RootVisual = (Visual)window.Content;

This is working great now without any problems.