chap5_6.htm

着重介绍基于C++的web编程技术

      <tr>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">&amp;Print...</font></td>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">ID_COMMON_PRINT</font></td>
      </tr>
      <tr>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">P&amp;rint 
        setup...</font></td>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">ID_COMMON_PRINTSETUP</font></td>
      </tr>
      <tr>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">F&amp;ind...</font></td>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">ID_COMMON_FIND</font></td>
      </tr>
      <tr>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">&amp;Replace...</font></td>
        <td WIDTH="50%"><font FACE="Times New Roman" SIZE="3"><p ALIGN="JUSTIFY">ID_COMMON_REPLACE</font></td>
      </tr>
    </table>
    <p><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">接下来的工作是编写测试程序的源代码。首先，利用</font><font FACE="Times New Roman" SIZE="3">ClassWizard</font><font SIZE="3">为表</font><font FACE="Times New Roman" SIZE="3">5.11</font><font SIZE="3">的菜单项创建消息处理函数，注意这些处理函数都是</font><font FACE="Times New Roman" SIZE="3">CCommonDlgView</font><font SIZE="3">的成员。接着，请按清单</font><font FACE="Times New Roman" SIZE="3">5.10</font><font SIZE="3">和</font><font FACE="Times New Roman" SIZE="3">5.11</font><font SIZE="3">修改程序。限于篇幅，这里仅列出与测试相关的部分源代码。</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY"></font><b><font SIZE="3">　</p>
    <p ALIGN="JUSTIFY">清单</font><font FACE="Times New Roman" SIZE="3">5.10 </font><font SIZE="3">头文件</font><font FACE="Times New Roman" SIZE="3">CommonDlgView.h</b></p>
    <p ALIGN="JUSTIFY">class CCommonDlgView : public CView</p>
    <p ALIGN="JUSTIFY">{</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">. . . . . .</b></p>
    <p ALIGN="JUSTIFY">#ifdef _DEBUG</p>
    <p ALIGN="JUSTIFY">virtual void AssertValid() const;</p>
    <p ALIGN="JUSTIFY">virtual void Dump(CDumpContext&amp; dc) const;</p>
    <p ALIGN="JUSTIFY">#endif</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">protected:</p>
    <p ALIGN="JUSTIFY">void DispPrintInfo(CPrintDialog&amp; dlg);</p>
    <p ALIGN="JUSTIFY">protected:</p>
    <p ALIGN="JUSTIFY">CFont m_Font; //</font><font SIZE="3">正文的字体</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">COLORREF m_ForeColor; //</font><font SIZE="3">正文的前景色</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">COLORREF m_BackColor; //</font><font SIZE="3">正文的背景色</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">CFindReplaceDialog *m_pFindReplaceDlg;</p>
    <p ALIGN="JUSTIFY">BOOL m_bFindOnly;</b></p>
    <p ALIGN="JUSTIFY">// Generated message map functions</p>
    <p ALIGN="JUSTIFY">protected:</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">//Find</font><font SIZE="3">和</font><font FACE="Times New Roman" SIZE="3">Replace</font><font SIZE="3">对话框通知消息处理函数</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">afx_msg LRESULT OnFindReplaceCmd(WPARAM, LPARAM lParam);</b></p>
    <p ALIGN="JUSTIFY">//{{AFX_MSG(CCommonDlgView)</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonColor();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonFont();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonOpenfile();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonSavefile();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonPrint();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonPrintsetup();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonFind();</p>
    <p ALIGN="JUSTIFY">afx_msg void OnCommonReplace();</p>
    <p ALIGN="JUSTIFY">//}}AFX_MSG</p>
    <p ALIGN="JUSTIFY">DECLARE_MESSAGE_MAP()</p>
    <p ALIGN="JUSTIFY">};</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">. . . . . .</b></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY"></font><b><font SIZE="3">　</p>
    <p ALIGN="JUSTIFY">清单</font><font FACE="Times New Roman" SIZE="3">5.11 </font><font SIZE="3">文件</font><font FACE="Times New Roman" SIZE="3">CCommonDlgView.cpp</b></p>
    <p ALIGN="JUSTIFY">#include &quot;stdafx.h&quot;</p>
    <p ALIGN="JUSTIFY">#include &quot;CommonDlg.h&quot;</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">#include &quot;CommonDlgDoc.h&quot;</p>
    <p ALIGN="JUSTIFY">#include &quot;CommonDlgView.h&quot;</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">#ifdef _DEBUG</p>
    <p ALIGN="JUSTIFY">#define new DEBUG_NEW</p>
    <p ALIGN="JUSTIFY">#undef THIS_FILE</p>
    <p ALIGN="JUSTIFY">static char THIS_FILE[] = __FILE__;</p>
    <p ALIGN="JUSTIFY">#endif</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">IMPLEMENT_DYNCREATE(CCommonDlgView, CView)</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">//</font><font SIZE="3">获取对本进程唯一的消息编号</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">static const UINT nMsgFindReplace = 
    ::RegisterWindowMessage(FINDMSGSTRING);</b></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">BEGIN_MESSAGE_MAP(CCommonDlgView, CView)</p>
    <p ALIGN="JUSTIFY">//{{AFX_MSG_MAP(CCommonDlgView)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_COLOR, OnCommonColor)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_FONT, OnCommonFont)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_OPENFILE, OnCommonOpenfile)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_SAVEFILE, OnCommonSavefile)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_PRINT, OnCommonPrint)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_PRINTSETUP, OnCommonPrintsetup)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_FIND, OnCommonFind)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_COMMON_REPLACE, OnCommonReplace)</p>
    <p ALIGN="JUSTIFY">//}}AFX_MSG_MAP</p>
    <p ALIGN="JUSTIFY">// Standard printing commands</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)</p>
    <p ALIGN="JUSTIFY">ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">ON_REGISTERED_MESSAGE(nMsgFindReplace, OnFindReplaceCmd)</b></p>
    <p ALIGN="JUSTIFY">END_MESSAGE_MAP()</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">CCommonDlgView::CCommonDlgView()</p>
    <p ALIGN="JUSTIFY">{</p>
    <p ALIGN="JUSTIFY">// TODO: add construction code here</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">//</font><font SIZE="3">缺省前景色为黑色，背景色为白色，字体为系统字体</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">m_ForeColor=0;</p>
    <p ALIGN="JUSTIFY">m_BackColor=0xFFFFFF;</p>
    <p ALIGN="JUSTIFY">m_Font.CreateStockObject(SYSTEM_FONT);</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">m_pFindReplaceDlg=NULL; </b></p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">}</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">void CCommonDlgView::OnDraw(CDC* pDC)</p>
    <p ALIGN="JUSTIFY">{</p>
    <p ALIGN="JUSTIFY">CCommonDlgDoc* pDoc = GetDocument();</p>
    <p ALIGN="JUSTIFY">ASSERT_VALID(pDoc);</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">// TODO: add draw code for native data here</p>
    <p></font><b><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">int x,y;</p>
    <p ALIGN="JUSTIFY">CFont *pOldFont;</p>
    <p ALIGN="JUSTIFY">TEXTMETRIC TM;</p>
    <p ALIGN="JUSTIFY">int textHeight;</p>
    <p ALIGN="JUSTIFY"></font><font SIZE="3">　</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">//</font><font SIZE="3">设置正文的字体</font><font FACE="Times New Roman" SIZE="3"></p>
    <p ALIGN="JUSTIFY">pOldFont=pDC-&gt;SelectObject(&amp;m_Font);</p>