static extern bool AttachThreadInput(uint idAttach, uint idAttachTo,

Public Shared Function AttachThreadInput(ByVal idAttach As System.UInt32, ByVal idAttachTo As System.UInt32, ByVal fAttach As Boolean) As Boolean

AttachThreadInput(idAttach, curThreadId, true);

AttachThreadInput(idAttach, curThreadId, false);

The trick is to make windows ‘think’ that our process and the target window (hwnd) are related by attaching the threads (using AttachThreadInput API) and using an alternative API: BringWindowToTop.

        AttachThreadInput(foreThread, appThread, true);

        AttachThreadInput(foreThread, appThread, false);