diff --git a/API_General.cpp b/API_General.cpp
index cff80d5..9bcd94e 100644
--- a/API_General.cpp
+++ b/API_General.cpp
@@ -250,3 +250,10 @@ __stdcall EgtSetOutText( pfOutTextW pFun)
    s_pFunOutText = pFun ;
    return ( ExeSetOutText( (( pFun != nullptr) ? MyOutText : nullptr)) ? TRUE : FALSE) ;
 }
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSetMainWindowHandle( HWND hMainWnd)
+{
+   return ( ExeSetMainWindowHandle( hMainWnd) ? TRUE : FALSE) ;
+}
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 3472479..668e8e2 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ