subject_21798.htm

来自「一些关于vc的问答」· HTM 代码 · 共 30 行

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序号：21798 发表者：卢明 发表日期：2002-11-20 14:50:32
<br>主题：我是只菜鸟：请教一个问题！
<br>内容：本人对MFC只略知一二，但近来要编个程序不得不使用它（别的不会），请问大哥大姐们，我如何用MFC编一个画矩形的函数呀！透视和投裄视是甚么意思呀？
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回复者：句点 回复日期：2002-11-20 14:53:35
<br>内容：低级问题。自己查MSDN。
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回复者：徐景周 回复日期：2002-11-20 15:00:01
<br>内容：参看
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<font color=red>答案被接受</font><br>回复者：徐景周 回复日期：2002-11-20 15:01:21
<br>内容：// 用指定画笔绘制矩形边框(逻辑坐标)<BR>void DrawFrame(CDC* pDC, const CRect&amp; rect, CPen* pPen /* = NULL */)<BR>{ <BR>&nbsp;&nbsp;&nbsp;&nbsp;CPen&nbsp;&nbsp;&nbsp;&nbsp;pen(PS_SOLID, 0, RGB(0, 0, 0));<BR>&nbsp;&nbsp;&nbsp;&nbsp;CPen*&nbsp;&nbsp;&nbsp;&nbsp;pOldPen = pDC-&gt;SelectObject(pPen == NULL ? &amp;pen : pPen);<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;MoveTo(rect.left, rect.top);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// 绘制矩形框<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.right,rect.top);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.right,rect.bottom);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.left, rect.bottom);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.left, rect.top);<BR>&nbsp;&nbsp;&nbsp;&nbsp;// 恢复CDC对象<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;SelectObject(pOldPen);<BR>}<BR><BR>//绘制聚焦矩形(逻辑坐标)<BR>void DrawFocusRect(CDC* pDC, const CRect&amp; rect)<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;CPen&nbsp;&nbsp;&nbsp;&nbsp;pen(PS_DOT, 0, RGB(0,0,0));<BR>&nbsp;&nbsp;&nbsp;&nbsp;CPen*&nbsp;&nbsp;&nbsp;&nbsp;pOldPen = pDC-&gt;SelectObject(&amp;pen);<BR>&nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nOldMode = pDC-&gt;SetROP2(R2_NOTXORPEN);<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;MoveTo(rect.left, rect.top);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// 绘制矩形框<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.right,rect.top);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.right,rect.bottom);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.left, rect.bottom);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;LineTo(rect.left, rect.top);<BR>&nbsp;&nbsp;&nbsp;&nbsp;// 恢复CDC对象<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;SetROP2(nOldMode);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pDC-&gt;SelectObject(pOldPen);<BR>}
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回复者：目不识丁 回复日期：2002-11-20 20:45:38
<br>内容：有画矩形的API
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