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序號：62454 發(fā)表者：xiaogang_2000 發(fā)表日期：2003-11-26 22:18:59
<br>主題：怎樣將CRectTracker類對象的信息保存在鏈表中
<br>內(nèi)容：怎樣將CRectTracker類對象的信息保存在鏈表中？<BR>我想在圖中畫多個CRectTracker對象，在鼠標(biāo)左鍵響應(yīng)函數(shù)中寫下如下代碼：<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;//定義鏈表為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)//拉伸圖元&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//移動圖元<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>但我不知怎樣保存每個對象的信息？CRectTracker類對象該保存哪些信息啊？上面的程序該怎樣改？麻煩大家指點，不勝感激！<BR>mc_77@sina.com<BR>qq:56700320 
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回復(fù)者：xiaogang_2000 回復(fù)日期：2003-11-27 20:26:22
<br>內(nèi)容：沒人回答？？？
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回復(fù)者：xiaogang_2000 回復(fù)日期：2003-11-28 22:03:02
<br>內(nèi)容：頂，，
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<font color=red>答案被接受</font><br>回復(fù)者：紅蘋果 回復(fù)日期：2003-11-30 19:25:44
<br>內(nèi)容：CDrawObj *m_pDrawObj;&nbsp;&nbsp;&nbsp;&nbsp;//定義鏈表為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改為CPtrList試試。<BR>
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