subject_42358.htm

vc

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序号：42358 发表者：蓝色飓风 发表日期：2003-06-02 20:35:51
<br>主题：谁帮帮我呀！谢谢！！急急！！
<br>内容：我遇到了这样一个问题。在运行一个父窗体时，当按下一个按钮，弹出一个子对话框询问是否退出程序。当键入"y"时，在按回车就退出整个程序；如键入"n"时，按回车不退出程序。请问怎么实现这样一个程序请给出具体的代码。谢谢！
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回复者：唐兵 回复日期：2003-06-03 11:40:42
<br>内容：&nbsp;&nbsp;&nbsp;&nbsp;if(::MessageBox(NULL,"你确定要退出吗?", "提示信息", MB_YESNOCANCEL|MB_ICONEXCLAMATION) == IDYES)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CMainFrame::OnDestroy();<BR>}
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回复者：蓝色飓风 回复日期：2003-06-03 18:36:12
<br>内容：ttbing，我没说明白，我没说明白，所说的“Y”或“n”是键入的，并且是在CStatic里显示，当键入Y时再按回车时父窗体（父对话框）退出。不是用按钮实现。
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<font color=red>答案被接受</font><br>回复者：试一试 回复日期：2003-06-05 21:16:32
<br>内容：<BR>// 用于应用程序“关于”菜单项的 CAboutDlg 对话框<BR><BR>class CAboutDlg : public CDialog<BR>{<BR>public:<BR>&nbsp;&nbsp;&nbsp;&nbsp;CAboutDlg();<BR><BR>// 对话框数据<BR>&nbsp;&nbsp;&nbsp;&nbsp;enum { IDD = IDD_ABOUTBOX };<BR><BR>protected:<BR>&nbsp;&nbsp;&nbsp;&nbsp;virtual void DoDataExchange(CDataExchange* pDX);&nbsp;&nbsp;&nbsp;&nbsp;// DDX/DDV 支持<BR><BR>// 实现<BR>protected:<BR>&nbsp;&nbsp;&nbsp;&nbsp;DECLARE_MESSAGE_MAP()<BR>public:<BR>&nbsp;&nbsp;&nbsp;&nbsp;afx_msg void OnBnClickedOk();<BR>&nbsp;&nbsp;&nbsp;&nbsp;virtual BOOL PreTranslateMessage(MSG* pMsg);<BR>};<BR><BR>CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)<BR>{<BR>}<BR><BR>void CAboutDlg::DoDataExchange(CDataExchange* pDX)<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;CDialog::DoDataExchange(pDX);<BR>}<BR><BR>BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)<BR>&nbsp;&nbsp;&nbsp;&nbsp;ON_BN_CLICKED(IDOK, OnBnClickedOk)<BR>END_MESSAGE_MAP()<BR><BR>// 用于运行对话框的应用程序命令<BR>void CQuitQueryApp::OnAppAbout()<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;CAboutDlg aboutDlg;<BR>&nbsp;&nbsp;&nbsp;&nbsp;aboutDlg.DoModal();<BR>}<BR><BR><BR>// CQuitQueryApp 消息处理程序<BR><BR><BR>void CAboutDlg::OnBnClickedOk()<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: 在此添加控件通知处理程序代码<BR>&nbsp;&nbsp;&nbsp;&nbsp;OnOK();<BR>}<BR><BR>BOOL CAboutDlg::PreTranslateMessage(MSG* pMsg)<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: 在此添加专用代码和/或调用基类<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(pMsg-&gt;message == WM_KEYDOWN)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;switch(pMsg-&gt;wParam)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case 'Y':<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MessageBox("Yes");<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case 'N':<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MessageBox("No");<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;return CDialog::PreTranslateMessage(pMsg);<BR>}<BR>
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回复者：拼搏 回复日期：2003-06-21 17:16:28
<br>内容：写的精彩
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