Question

My WPF application has more than one window, I need to be able to get the hWnd of each Window instance so that I can use them in Win32 API calls.

Example of what I would like to do:

Window myCurrentWindow = Window.GetWindow(this);
IntPtr myhWnd = myCurrentWindow.hWnd; // Except this property doesn't exist.

What’s the best way to do this?

Answer 1

WindowInteropHelper is your friend. It has a constructor that accepts a Window parameter, and a Handle property that returns its window handle.

Window window = Window.GetWindow(this);
var wih = new WindowInteropHelper(window);
IntPtr hWnd = wih.Handle;