subject_21491.htm

一些关于vc的问答

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序号：21491 发表者：LoveMFC 发表日期：2002-11-18 10:26:25
<br>主题：如何使用CRcihEcitCtrl.StreamIn和StreamOut
<br>内容：我向大家请教如何使用CRcihEcitCtrl.StreamIn和StreamOut 
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<font color=red>答案被接受</font><br>回复者：芋头 回复日期：2002-11-18 10:39:24
<br>内容：MSDN里面有例子<BR>---------------------------------------------------<BR>StreamIn Example<BR><BR>// My callback procedure that writes the rich edit control contents<BR>// to a file.<BR>static DWORD CALLBACK <BR>MyStreamInCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)<BR>{<BR>&nbsp;&nbsp; CFile* pFile = (CFile*) dwCookie;<BR><BR>&nbsp;&nbsp; *pcb = pFile-&gt;Read(pbBuff, cb);<BR><BR>&nbsp;&nbsp; return 0;<BR>}<BR><BR>// The example code.<BR>&nbsp;&nbsp; // The pointer to my rich edit control.<BR>&nbsp;&nbsp; extern CRichEditCtrl* pmyRichEditCtrl;<BR>&nbsp;&nbsp; // The file from which to load the contents of the rich edit control.<BR>&nbsp;&nbsp; CFile cFile(TEXT("myfile.rtf"), CFile::modeRead);<BR>&nbsp;&nbsp; EDITSTREAM es;<BR><BR>&nbsp;&nbsp; es.dwCookie = (DWORD) &amp;cFile;<BR>&nbsp;&nbsp; es.pfnCallback = MyStreamInCallback; <BR>&nbsp;&nbsp; pmyRichEditCtrl-&gt;StreamIn(SF_RTF, es);<BR><BR>---------------------------------------------------<BR>StreamOut Example<BR><BR>// My callback procedure that reads the rich edit control contents<BR>// from a file.<BR>static DWORD CALLBACK <BR>MyStreamOutCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)<BR>{<BR>&nbsp;&nbsp; CFile* pFile = (CFile*) dwCookie;<BR><BR>&nbsp;&nbsp; pFile-&gt;Write(pbBuff, cb);<BR>&nbsp;&nbsp; *pcb = cb;<BR><BR>&nbsp;&nbsp; return 0;<BR>}<BR><BR>// The example code.<BR>&nbsp;&nbsp; // The pointer to my rich edit control.<BR>&nbsp;&nbsp; extern CRichEditCtrl* pmyRichEditCtrl;<BR>&nbsp;&nbsp; // The file to store the contents of the rich edit control.<BR>&nbsp;&nbsp; CFile cFile(TEXT("myfile.rtf"), CFile::modeCreate|CFile::modeWrite);<BR>&nbsp;&nbsp; EDITSTREAM es;<BR><BR>&nbsp;&nbsp; es.dwCookie = (DWORD) &amp;cFile;<BR>&nbsp;&nbsp; es.pfnCallback = MyStreamOutCallback; <BR>&nbsp;&nbsp; pmyRichEditCtrl-&gt;StreamOut(SF_RTF, es);<BR>
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回复者：LoveMFC 回复日期：2002-11-18 14:18:42
<br>内容：太谢谢了!
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