[개발/MFC] 중복실행 방지하기

[개발/MFC] 중복실행 방지하기

TCHAR szAppName[] = _T("sbrich");

HANDLE  hMutex  = NULL;

 

bool IsSecondInstance()

{

bool isSecondInstance = false;

hMutex = CreateMutex(NULL, NULL, szAppName);

int iLastError          = GetLastError();

 

if(hMutex && (ERROR_ACCESS_DENIED == iLastError || ERROR_ALREADY_EXISTS == iLastError))

{

ReleaseMutex(hMutex);

hMutex = NULL;

isSecondInstance = true;

}

 

return isSecondInstance;

}

int  main()

{

if(IsSecondInstance())

{

MessageBox(NULL, _T("One Instance Is Already Running."), _T("Information"), 0);

return 0;

}

 

/*App Code Goes Here...*/

 

ReleaseMutex(m_hMutex);

m_hMutex    =   NULL;

return 0;

}