Kids apps menu not shown in Chrome app

Question

I am developing a chrome application. I have two applications: Parent and Child. The application for children contains a menu. When I attach the instance of the child application to the tab of the parent application. The menu in the child application does not appear when you click the mouse.

The code snippet used for the attach process,

Process P = Process.GetProcessesByName("Child"); P.WaitForInputIdle(); IntPtr handle = P.MainWindowHandle; SetParent(handle, this.tabPage1.Handle); MoveWindow(handle, rec.X, rec.Y, rec.Width, rec.Height, true); 

I cannot make any changes to the Child app.