void CShowFontView::OnTimer(UINT nIDEvent)
{CClientDC dc(this);CFont font;CRect rt;GetClientRect( &rt );TEXTMETRIC tm;dc.GetTextMetrics(&tm);static int nindex = 0;m_nWithRect += 1;if( !nindex )m_strText = GetGeci( nindex );int nTextHei = dc.GetTextExtent( m_strText ).cy; // length of horizontal label文字的高度int nTextWei = dc.GetTextExtent( m_strText ).cx; // length of horizontal label文字的宽度RectShow.SetRect( 300 , 300 , 300+nTextWei+20 , 300+ nTextHei );if( m_nWithRect > nTextWei ){m_nWithRect = 10;nindex ++;m_strText = GetGeci( nindex );Sleep(1000);        }rectRetangle.SetRect( nTextWei +20 - m_nWithRect , 30 , nTextWei +20 , 30+nTextHei );rectColor.SetRect( 300 , 300 , 300+m_nWithRect , 300+nTextHei );Sleep(30);DrawText( m_strText );CView::OnTimer(nIDEvent);
}

void CShowFontView::DrawText( CString strText )
{if( strText.IsEmpty() ){return;}static int ncout = 0;CClientDC dc( this );CRect rtclient;GetClientRect( &rtclient );CBitmap MemBitmap;CDC MemDC; //首先定义一个显示设备对象MemDC.CreateCompatibleDC( &dc );MemBitmap.CreateCompatibleBitmap( &dc , rtclient.Width() , rtclient.Height() );MemDC.SelectObject( &MemBitmap );MemDC.FillSolidRect( 0  ,0 , rtclient.Width() , rtclient.Height() , RGB( 199 , 237 , 208));MemDC.SetTextColor( RGB( 255 , 0 , 0));MemDC.DrawText( strText , &rectRetangle , DT_LEFT );//字幕向左滚动；MemDC.SetTextColor( RGB( 0 , 0 , 0 ) );//先把这段歌词全部显示MemDC.DrawText( strText , &RectShow , DT_LEFT );MemDC.SetTextColor( RGB( 0, 0 , 255 ));//在把要变色的再显示一遍；MemDC.DrawText( strText , &rectColor , DT_LEFT );dc.BitBlt( 0 , 0 , rtclient.Width() , rtclient.Height() , &MemDC , 0, 0 , SRCCOPY );MemBitmap.DeleteObject();MemDC.DeleteDC();    ncout ++;}
int CShowFontView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{if (CView::OnCreate(lpCreateStruct) == -1)return -1;readGeci();SetTimer( 0 , 3 ,0 );return 0;
}BOOL CShowFontView::OnEraseBkgnd(CDC* pDC)
{return CView::OnEraseBkgnd(pDC);
}
void CShowFontView::readGeci()
{CStdioFile dlg;if(    dlg.Open("res\\text.txt" , CFile::modeRead ) ){CString strText;while ( dlg.ReadString( strText )){m_ListCtring.AddHead( strText );}dlg.Close();}
}
CString CShowFontView::GetGeci( int nindex )
{CString strText;if( nindex < m_ListCtring.GetCount()&& m_ListCtring.GetCount()>0 )strText = m_ListCtring.GetAt( m_ListCtring.FindIndex( m_ListCtring.GetCount() -nindex -1  ));elseKillTimer(0);return strText;
}