如何使运行在wpf窗口中的应用程序忽略单击或鼠标事件

Currently I am trying to run an unreal 4 application in a wpf window. However I only want the users to see the window not click it or use it. I have tried all sorts of workarounds for this but none seem to actually work. Any help would be greatly appreciated. Thank you. Below is the code I'm using to run application in wpf window.Currently I am trying to run an unreal 4 applic