subject_21536.htm

一些关于vc的问答

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序号：21536 发表者：ubi 发表日期：2002-11-18 14:50:23
<br>主题：是否重载new等？
<br>内容：代码如下：<BR><BR>class DevicePro : CObject<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;DECLARE_SERIAL( DevicePro )<BR>public:<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString csName;<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString csIP;<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString rsName;<BR>&nbsp;&nbsp;&nbsp;&nbsp;CString rsIP;<BR>public:<BR>&nbsp;&nbsp;&nbsp;&nbsp;DevicePro(CString cname=_T(""), <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CString cip=_T(""), <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CString rname=_T(""), <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CString rip=_T(""))<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;csName = cname;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;csIP = cip;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rsName = rname;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rsIP = rip;<BR>&nbsp;&nbsp;&nbsp;&nbsp;};<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;DevicePro(const DevicePro&amp; dv)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;csName = dv.csName;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;csIP = dv.csIP;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rsName = dv.rsName;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rsIP = dv.rsIP;<BR>&nbsp;&nbsp;&nbsp;&nbsp;};<BR><BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;POSITION pos;<BR>&nbsp;&nbsp;&nbsp;&nbsp;CObList&nbsp;&nbsp;m_MydevList;<BR>&nbsp;&nbsp;&nbsp;&nbsp;DevicePro *pDev = new DevicePro(cname, cip, rname, rip);<BR>&nbsp;&nbsp;&nbsp;&nbsp;DevicePro dev(cname, cip, rname, rip);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;if( ( pos = m_MydevList.Find(&amp;dev)) == NULL )<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_MydevList.AddTail(&amp;dev);<BR>&nbsp;&nbsp;&nbsp;&nbsp;};<BR><BR><BR><BR>编译出现如下错误:<BR>&nbsp;&nbsp;&nbsp;&nbsp;error C2248: 'new' : cannot access public member declared in class 'CObject'.<BR>&nbsp;&nbsp;&nbsp;&nbsp;error C2248: 'delete' : cannot access public member declared in class 'CObject'.<BR>&nbsp;&nbsp;&nbsp;&nbsp;error C2243: 'type cast' : conversion from 'class DevicePro *' to 'class CObject *' exists, but is inaccessible。<BR><BR>请问如何解决。是否要重载new，delete等操作符。谢谢！
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<font color=red>答案被接受</font><br>回复者：未出手的飞刀 回复日期：2002-11-18 15:26:17
<br>内容：<BR>class DevicePro : CObject<BR><BR>应该是<BR>class DevicePro : public CObject<BR>公有继承<BR>
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