BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
if( !CFrameWnd::PreCreateWindow(cs) )
return FALSE;
// TODO: Modify the Window class or styles here by modifying
// HIDE when startup
cs.style=WS_POPUP;
cs.lpszName=g_theApp.m_pszAppName;
cs.dwExStyle|=WS_EX_TOOLWINDOW;