判該程序是否運(yùn)行(BOOL CMakeSheetApp::InitInstance())
HANDLE Handle;
Handle = CreateMutex(NULL, TRUE, _T("MakeSheet3.0"));
if (Handle == NULL)
	return FALSE;
if (GetLastError() == ERROR_ALREADY_EXISTS)
{
	AfxMessageBox("MakeSheet3.0已運(yùn)行!", MB_ICONSTOP);
	return FALSE;
}