为什么写出的文字不停的闪
<P>为什么写出的文字不停的闪<BR><<<<<<<<CmFrameWnd.h>>>>>>>><BR>#pragma once<BR>class CmFrameWnd :public CFrameWnd<BR>{<BR>public:<BR> DECLARE_MESSAGE_MAP()<BR> afx_msg void OnPaint();<BR>};</P><P><<<<<<<<<CmFrameWnd.Cpp>>>>>><BR>#include "stdafx.h"<BR>#include "CmFrameWnd.h"<BR>BEGIN_MESSAGE_MAP(CmFrameWnd, CFrameWnd)<BR> ON_WM_PAINT()<BR>END_MESSAGE_MAP()</P>
<P>void CmFrameWnd::OnPaint()<BR>{<BR> CString str=_T("rxgasmnoral");<BR> CClientDC dc(this);<BR> dc.TextOut(10,10,str,str.GetLength());<BR>}<BR> <BR> <BR>调用<BR>CmFrameWnd *m_pMainWnd;<BR>m_pMainWnd = new CmFrameWnd; <BR>m_pMainWnd->Create(NULL,NULL,NULL,0,0,200,200); <BR>m_pMainWnd ->ShowWindow(SW_SHOW);<BR>m_pMainWnd ->UpdateWindow();<BR></P>
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