void CShellExeDlg::OnBnClickedButton1()
{
    // 如果没有打开程序，则打开程序。然后传递消息
    CWnd *pWnd=CWnd::FindWindow(NULL,_T("几何数据(单位毫米)"));  //找到运行的程序
    if(pWnd==NULL)
    {
        AfxMessageBox((CString)"接收程序没有运行!");
        return ;
    }
    CString str;
    GetDlgItemText(IDC_EDIT2,str);   
    pWnd->SendMessage(WM_SETTEXT ,0,(LPARAM)(LPCTSTR)str);   //传递带参数消息过去
}

ON_MESSAGE(WM_SETTEXT, &CDialogModify::OnSettext)

afx_msg LRESULT CDialogModify::OnSettext(WPARAM wParam, LPARAM lParam)
{
    char str[ 256 ];
    wsprintf( str, "%s", (char*) lParam );
    Mat src = imread(str);
    if (src.rows > 0 )
    {
        CStoneGuideGUIView* fatherview = (CStoneGuideGUIView*)m_pView;
        fatherview->OpenImgFromMsg(str);
    }
    return 0;
}