The owner of the WPF window set window

[DllImport("user32.dll")]  Public Static extern IntPtr GetAncestor (IntPtr hWnd, int flags);

varDialog =NewC1imagedialog(); window =NewWindow(); Window.            Content = Dialog; Window. ShowInTaskbar =false; Window. Windowstartuplocation =windowstartuplocation.            Centerowner; Window. SizeToContent =sizetocontent.            Widthandheight; Window. WindowStyle =WindowStyle. ToolWindow;varElementsource =HwndSource. Fromvisual (RTB) asHwndSource;if(Elementsource! =NULL)            {intGa_root = 2;IntPtrRoot = GetAncestor (Elementsource.handle, ga_root);NewWindowinterophelper(window).            Owner = root; }
Note: If there are events in dialog that need to be registered. Register the event first and then

Window. ShowDialog ();
Only effect