subject_62454.htm

vc

<p>
序号：62454 发表者：xiaogang_2000 发表日期：2003-11-26 22:18:59
<br>主题：怎样将CRectTracker类对象的信息保存在链表中
<br>内容：怎样将CRectTracker类对象的信息保存在链表中？<BR>我想在图中画多个CRectTracker对象，在鼠标左键响应函数中写下如下代码：<BR>void CMyListView::OnLButtonDown(UINT nFlags, CPoint point) <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your message handler code here and/or call default<BR>&nbsp;&nbsp;&nbsp;&nbsp;CDrawObj *m_pDrawObj;&nbsp;&nbsp;&nbsp;&nbsp;//定义链表为typedef CTypedPtrList&lt;CObList, CDrawObj*&gt; CDrawObjList;<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_pDrawObj=new CDrawObj;<BR>&nbsp;&nbsp;&nbsp;&nbsp;CListDoc* pDoc = GetDocument();<BR>&nbsp;&nbsp;&nbsp;&nbsp;BOOL bResult=pDoc-&gt;m_tracker.HitTest (point) != -1;//CRectTracker::hitNothing; <BR>&nbsp;&nbsp;&nbsp;&nbsp;//Tracker rectangle changed so update views.&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;if (bResult)//拉伸图元&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pDoc-&gt;m_tracker.Track(this,point,true); //The window object that contains the rectangle<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pDoc-&gt;SetModifiedFlag ();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pDoc-&gt;UpdateAllViews (NULL); <BR>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;else//移动图元<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pDoc-&gt;m_tracker.TrackRubberBand (this,point,true); <BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;CView::OnLButtonDown(nFlags, point);<BR>}<BR>但我不知怎样保存每个对象的信息？CRectTracker类对象该保存哪些信息啊？上面的程序该怎样改？麻烦大家指点，不胜感激！<BR>[e-mail]<BR>qq:56700320 
<br><a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p>
<hr size=1>
<blockquote><p>
回复者：xiaogang_2000 回复日期：2003-11-27 20:26:22
<br>内容：没人回答？？？
<br>
<a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p></blockquote>
<hr size=1>
<blockquote><p>
回复者：xiaogang_2000 回复日期：2003-11-28 22:03:02
<br>内容：顶，，
<br>
<a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p></blockquote>
<hr size=1>
<blockquote><p>
<font color=red>答案被接受</font><br>回复者：红苹果 回复日期：2003-11-30 19:25:44
<br>内容：CDrawObj *m_pDrawObj;&nbsp;&nbsp;&nbsp;&nbsp;//定义链表为typedef CTypedPtrList&lt;CObList, CDrawObj*&gt; CDrawObjList;<BR><BR>你把上面的typedef CTypedPtrList&lt;CObList, CDrawObj*&gt; CDrawObjList;<BR>中的CObList改为CPtrList试试。<BR>
<br>
<a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p></blockquote>