用windows第三方软件打开某个程序或文件

if (PathFileExists(m_StrWordPath))

{

CString tempStr;

tempStr.Format("shell32.dll,OpenAs_RunDLL %s",m_StrWordPath);

int isError=(int)ShellExecute(NULL, "open", "rundll32.exe ", tempStr, "", SW_SHOW);
        }