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📄 chap5_5.htm

📁 VC＋＋编程实例。非常详细
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      <tr>
        <td WIDTH="33%"><b><p ALIGN="JUSTIFY"><span style="font-size: 9pt">控件类型</span></b></td>
        <td WIDTH="33%"><b><p ALIGN="JUSTIFY"><span style="font-size: 9pt">控件ID</span></b></td>
        <td WIDTH="33%"><b><p ALIGN="JUSTIFY"><span style="font-size: 9pt">控件标题</span></b></td>
      </tr>
      <tr>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">静态正文</span></td>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">缺省</span></td>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">姓名：</span></td>
      </tr>
      <tr>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">编辑框</span></td>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">IDC_NAME</span></td>
        <td WIDTH="33%"><span style="font-size: 9pt">　</span></td>
      </tr>
    </table>
    <p><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <blockquote>
      <blockquote>
        <p ALIGN="JUSTIFY"><span style="font-size: 9pt">用ClassWizard为模板IDD_PERSONAL创建CPropertyPage类的派生类，类名为CPersonalPage。在该类中为控件IDC_NAME加入对应的成员变量，变量名为m_strName，类型为CString。为控件IDC_NAME加入EN_CHANGE消息处理函数OnChangeName，当编辑框的内容被改变时，控件会向对话框发出EN_CHANGE消息。在OnChangeName中，应该使Apply按钮允许。</span></p>
        <p ALIGN="JUSTIFY"><span style="font-size: 9pt">仿照步2，为标签式对话框的第二页创建对话框模板。指定其ID为IDD_UNIT，标题为“单位情况”。在模板中加入的控件如图5.11和表5.7所示。</span></p>
        <b>
      </blockquote>
    </blockquote>
    <p><span style="font-size: 9pt">　</span></p>
    <p ALIGN="CENTER"><span style="font-size: 9pt">表5.7</span></b></p>
    <table BORDER="1" CELLSPACING="1" CELLPADDING="1" WIDTH="579">
      <tr>
        <td WIDTH="33%"><b><p ALIGN="JUSTIFY"><span style="font-size: 9pt">控件类型</span></b></td>
        <td WIDTH="33%"><b><p ALIGN="JUSTIFY"><span style="font-size: 9pt">控件ID</span></b></td>
        <td WIDTH="33%"><b><p ALIGN="JUSTIFY"><span style="font-size: 9pt">控件标题</span></b></td>
      </tr>
      <tr>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">静态正文</span></td>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">缺省</span></td>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">工作单位：</span></td>
      </tr>
      <tr>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">编辑框</span></td>
        <td WIDTH="33%"><p ALIGN="JUSTIFY"><span style="font-size: 9pt">IDC_UNIT</span></td>
        <td WIDTH="33%"><span style="font-size: 9pt">　</span></td>
      </tr>
    </table>
    <p><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <blockquote>
      <blockquote>
        <p ALIGN="JUSTIFY"><span style="font-size: 9pt">用ClassWizard为模板IDD_UNIT创建CPropertyPage类的派生类，类名为CUnitPage。在该类中为控件IDC_UNIT加入对应的成员变量，变量名为m_strUnit，类型为CString。为控件IDC_UNIT加入EN_CHANGE消息处理函数OnChangeUnit。</span></p>
        <p ALIGN="JUSTIFY"><span style="font-size: 9pt">用ClassWizard创建一个CPropertySheet的派生类，类名为CRegisterSheet。</span></p>
        <p ALIGN="JUSTIFY"><span style="font-size: 9pt">在CRegisterApp类的头文件的开头加入下面一行<br>
        <b>#define WM_USER_OUTPUT (WM_USER+200)<br>
        </b>WM_USER_OUTPUT不是标准的Windows消息，而是一个用户定义消息。在本例中，当标签式对话框的Apply按钮被按下后，程序会向编辑视图发送该消息，编辑视图对应的消息处理函数应该输出对话框的数据。用户定义消息的编码范围是WM_USER—0x7FFF。</span></p>
        <p ALIGN="JUSTIFY"><span style="font-size: 9pt">请读者按清单5.13、5.14、5.15修改程序，限于篇幅，这里仅列出了需要修改的部分源代码。</span></p>
      </blockquote>
    </blockquote>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">清单5.13 CPersonalPage类和CUnitPage类的部分代码</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">void CPersonalPage::OnChangeName() </span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">{</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">// TODO: Add your control notification 
    handler code here</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">SetModified(TRUE); //使Apply按钮允许</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">UpdateData(TRUE);</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">}</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">void CUnitPage::OnChangeUnit() </span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">{</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">// TODO: Add your control notification 
    handler code here</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">SetModified(TRUE); //使Apply按钮允许</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">UpdateData(TRUE);</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">}</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">当页中的编辑框的内容被改变时，页会收到EN_CHANGE消息，这将导致OnChangeName或OnChangeUnit被调用。对该消息的处理是使Apply按钮允许并调用UpdateData(TRUE)更新数据。</span></p>
    <p ALIGN="JUSTIFY"><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">清单5.14 CRegisterSheet类的部分代码</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">//文件RegisterSheet.h</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">class CRegisterSheet : public 
    CPropertySheet</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">{</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">. . . . . .</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">// Construction</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">public:</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">CRegisterSheet(UINT nIDCaption, CWnd* 
    pParentWnd = NULL, UINT iSelectPage = 0);</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">CRegisterSheet(LPCTSTR pszCaption, CWnd* 
    pParentWnd = NULL, UINT iSelectPage = 0);</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">public:</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">CPersonalPage m_PersonalPage;</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">CUnitPage m_UnitPage;</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">. . . . . .</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">protected:</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">//{{AFX_MSG(CRegisterSheet)</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">// NOTE - the ClassWizard will add and 
    remove member functions here.</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">//}}AFX_MSG</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">afx_msg void OnApplyNow();</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">DECLARE_MESSAGE_MAP() </span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">};</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">//文件RegisterSheet.cpp</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">#include &quot;stdafx.h&quot;</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">#include &quot;Register.h&quot;</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">#include &quot;PersonalPage.h&quot;</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">#include &quot;UnitPage.h&quot;</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">#include &quot;RegisterSheet.h&quot;</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">CRegisterSheet::CRegisterSheet(LPCTSTR 
    pszCaption, CWnd* pParentWnd, UINT iSelectPage)</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">:CPropertySheet(pszCaption, pParentWnd, 
    iSelectPage)</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">{</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">AddPage(&amp;m_PersonalPage); //向标签对话框中添加页</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">AddPage(&amp;m_UnitPage);</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">}</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">BEGIN_MESSAGE_MAP(CRegisterSheet, 
    CPropertySheet)</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">//{{AFX_MSG_MAP(CRegisterSheet)</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">// NOTE - the ClassWizard will add and 
    remove mapping macros here.</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">//}}AFX_MSG_MAP</span></p>
    <p><b><span style="font-size: 9pt">　</span></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">ON_BN_CLICKED(ID_APPLY_NOW, OnApplyNow)</span></b></p>
    <p ALIGN="JUSTIFY"><span style="font-size: 9pt">END_MESSAGE_MAP()</span></p>
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