I have performed researched and found that it is a known issue. I would
like to provide you with the following workaround.

1.      Insert the following codes at the head of your MainFrm.cpp.
#include <dde.h>        // for DDE execute shell requests
#ifndef _countof
#define _countof(array) (sizeof(array)/sizeof(array[0]))
#endif

2.      Revise the message map in your MainFrm.cpp.
BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWnd)
        ON_WM_CREATE()
        //…………
        ON_MESSAGE(WM_DDE_EXECUTE, OnDDEExecute)
END_MESSAGE_MAP()

3.      In your MainFrm.h file, insert the following codes
protected:
        afx_msg LRESULT OnDDEExecute(WPARAM wParam, LPARAM lParam);

4.      Insert the following code in your MainFrm.cpp file
LRESULT CMainFrame::OnDDEExecute(WPARAM wParam, LPARAM lParam)
{
        // unpack the DDE message
   UINT_PTR unused;
        HGLOBAL hData;
   //IA64: Assume DDE LPARAMs are still 32-bit
        VERIFY(UnpackDDElParam(WM_DDE_EXECUTE, lParam, &unused,
(UINT_PTR*)&hData));

        // get the command string
        TCHAR szCommand[_MAX_PATH * 2];
        LPCTSTR lpsz = (LPCTSTR)GlobalLock(hData);
        lstrcpyn(szCommand, lpsz, _countof(szCommand));
        GlobalUnlock(hData);

        // acknowledge now - before attempting to execute
        ::PostMessage((HWND)wParam, WM_DDE_ACK, (WPARAM)m_hWnd,
          //IA64: Assume DDE LPARAMs are still 32-bit
                ReuseDDElParam(lParam, WM_DDE_EXECUTE, WM_DDE_ACK,
                (UINT)0x8000, (UINT_PTR)hData));

        // don't execute the command when the window is disabled
        if (!IsWindowEnabled())
        {
                TRACE(traceAppMsg, 0, _T("Warning: DDE command '%s' ignored because
window is disabled.\n"),
                        szCommand);
                return 0;
        }

        // execute the command
        if (!AfxGetApp()->OnDDECommand(szCommand))
                TRACE(traceAppMsg, 0, _T("Error: failed to execute DDE command '%s'.\n"),
szCommand);

        return 0L;

Regards,

Peter Huang
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This posting is provided "AS IS" with no warranties, and confers no rights.
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