--- mstools/mfc/samples/ctrltest/paredit.cpp	2018/08/09 18:21:00	1.1.1.1
+++ mstools/mfc/samples/ctrltest/paredit.cpp	2018/08/09 18:24:50	1.1.1.2
@@ -122,8 +122,19 @@ void CParsedEdit::OnVScroll(UINT nSBCode
 
 void CParsedEdit::OnBadInput()
 {
+	// In the Win32 API, the WM_COMMAND message is packed differently.
+	// When using the Microsoft Foundation Classes this is hardly noticed,
+	// because of the ON_COMMAND macro and message maps.  If you need
+	// to send a WM_COMMAND to a window, the packing is specific to the
+	// target: Win32 or Win16...
+
+#ifndef _NTWIN
+	if (GetParent()->SendMessage(WM_COMMAND,
+		GetDlgCtrlID(), MAKELONG(m_hWnd, PEN_ILLEGALCHAR)) != -1)
+#else
 	if (GetParent()->SendMessage(WM_COMMAND,
-		GetDlgCtrlID(), MAKELONG(m_hWnd, PEN_ILLEGALCHAR)) != -1) 
+		MAKELONG(GetDlgCtrlID(), PEN_ILLEGALCHAR), (LPARAM)m_hWnd) != -1)
+#endif
 	{
 		MessageBeep(-1);
 	}