更多精彩：http://blog.csdn.net/xjm199 m_nWidth+=5; CClientDC dc(this); TEXTMETRIC tm; dc.GetTextMetrics(&tm); CRect rect; rect.left=0; rect.top=200; rect.right=m_nWidth; rect.bottom=rect.top+tm.tmHeight; dc.SetTextColor(RGB(255,0,0)); CString str; str.LoadString(IDS_STRINGVC); dc.DrawText(str,rect,DT_LEFT); rect.top=150; rect.bottom=rect.top+tm.tmHeight; dc.DrawText(str,rect,DT_RIGHT); CSize sz=dc.GetTextExtent(str); if(m_nWidth>sz.cx) { m_nWidth=0; dc.SetTextColor(RGB(0,255,0)); dc.TextOut(0,200,str); }