how to hide the gui when i use createprocess

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hello friend,
I use createprocess function open an exist app such as 'calc.exe'. But how can i hide the gui interface?The STARTUPINFO member 'wShowWindow=SW_HIDE' doesn't work.

C++

PROCESS_INFORMATION pi;
STARTUPINFO si;
memset(&si,0,sizeof(si));
si.cb=sizeof(si);
si.dwFlags=STARTF_USESHOWWINDOW;
si.wShowWindow=SW_HIDE;
BOOL fRet=CreateProcess(_T("C:\\Windows\\system32\\calc.exe"),
                        NULL,
                        NULL,
                        FALSE,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        &si,
                        &pi);

Posted 2-Sep-12 21:26pm

ladyflys

Updated 2-Sep-12 21:45pm

Richard MacCutchan

v2

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Richard MacCutchan · Answer 1 · 2012-09-02T22:03:00

Solution 1

I suspect that this is something to do with calc.exe itself ignoring this parameter. I have just tried it with a test program and it works correctly, as described in the documentation.

Posted 2-Sep-12 22:03pm

Richard MacCutchan