VFP调用RUN命令异常_发现CMD下执行命令提示“拒绝访问”

上面CMD环境下，到指定目录下后，运行“AcroRD32.exe”，可以运行，但直接带整个目录无法运行，提示“拒绝访问”

  DECLARE INTEGER ShellExecute IN shell32.dll ;
            INTEGER hndWin, ;
            STRING cAction, ;
            STRING cFileName, ;
            STRING cParams, ;
            STRING cDir, ;
            INTEGER nShowWin
        ShellExecute(0, "open","c:\aaa.PDF", "", "", 1)

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