getting rid of DOS console window

I start a process using CreateProcess as follows, which starts with a minimized DOS console window which, in turn, starts a GUI. I want the console window closed automatically when the GUI is closed. I tried the following code. It doesn't work.
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CreateProcess(NULL,"cmd.exe /c start /min test.bat",NULL,NULL,FALSE,NORMAL_PRIORITY_CLASS,NULL,NULL,&StartInfo,&pInfo);
HANDLE hp=pInfo.hProcess;
LPDWORD pExitCode=NULL;
GetExitCodeProcess(hp, pExitCode);
ExitProcess(*pExitCode);
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j4monthsAsked:
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allymConnect With a Mentor Commented:
What's in the batch file? Try putting "exit" as the last command.

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jkrCommented:
What is your "STARTUP_INFO" struct like?

It should be

 STARTUPINFO siStartInfo;

    // Set up the start up info struct.
    ZeroMemory(&siStartInfo,sizeof(STARTUPINFO));
    siStartInfo.cb = sizeof(STARTUPINFO);
    siStartInfo.dwFlags = STARTF_USESHOWWINDOW;
    siStartInfo.wShowWindow = SW_HIDE;
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j4monthsAuthor Commented:
I modified the STARTUPINFO as you described, it didn't make a difference..
actually my problem is not at the startup. it's when I close the GUI window..
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