Build Window Core
When overridden in a derived class, creates the window to be hosted.
protected abstract System.Runtime.InteropServices.HandleRef BuildWindowCore (System.Runtime.InteropServices.HandleRef hwndParent);
The window handle of the parent window.
The handle to the child Win32 window to create.
This method's implementation is called from within the internal implementation of BuildWindowCore.
The child window will be created only if the window is owned by the calling thread.