Setting a WinForms Form as Owner for a WPF Window

Question

I have a main application which is built around a System.Windows.Forms.Form There is a legacy System.Windows.Window that the user can call up which is set as Topmost. I would like the Window to be owned by the main application, so it will minimize when the application is minimized. So my expected code was

TopmostDisplayWindow.Owner = MainAppForm;

However, there is no Window.Owner method that takes a Form and Window has no override of Show() that takes the owner.

Is there an easy way to get a Window for the MainAppForm or would it take something more complicated?

Answer 1

You can use WindowInteropHelper and set Owner property of it:

var window = new YourWPFWindow();
WindowInteropHelper helper = new WindowInteropHelper(window);
helper.Owner = this.Handle;
window.Show();

Use the above code in your main/parent form which is a Winform Form. Remember to add following references when you want to show your WPF Window:

1. PresentationCore
2. PresentationFramework
3. WindowsBase