BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
if( !CFrameWndEx::PreCreateWindow(cs) )
return FALSE;
// TODO: Modify the Window class or styles here by modifying
//  the CREATESTRUCT cs

cs.hMenu = NULL; //메뉴 제거
cs.style &= ~FWS_ADDTOTITLE; //타이틀 제거
this->SetTitle(_T("splitter 디자인")); //캡션 설정

cs.cx = 900;  //창 크기 설정
cs.cy = 700;

return TRUE;
}