商业编程-源码-创建一个不可关闭的对话框.zip

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cpp：3个

plg：1个

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在编程领域，创建一个不可关闭的对话框是一个特殊的需求，通常用于特定的用户交互场景，例如强制用户执行某个操作或显示重要信息。这个压缩包文件"商业编程-源码-创建一个不可关闭的对话框.zip"包含了一个示例，演示如何在编程中实现这样一个功能。以下是对这个主题的详细讲解：我们需要理解对话框（Dialog）的基本概念。对话框是一种特殊的窗口，用于与用户进行临时交互，它可以是模态（Modal）或非模态（Modeless）。模态对话框会阻止用户与对话框背后的其他窗口进行交互，直到用户关闭对话框；而非模态对话框则允许用户在对话框打开的同时操作其他窗口。创建一个不可关闭的对话框涉及到对窗口事件的处理，尤其是窗口关闭事件。在大多数编程语言中，比如Java、C#、Python等，窗口关闭通常是通过点击关闭按钮（X按钮）或者按下Esc键触发的。我们可以通过重写或拦截这些事件来防止对话框被关闭。以Java为例，我们可以使用JFrame类创建一个基本的对话框，并重写`processWindowEvent`方法，过滤掉窗口关闭事件： ```java import javax.swing.JFrame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class Un closableDialog extends JFrame { public Un closableDialog() { // 设置窗口标题 setTitle("不可关闭的对话框"); // 添加一个窗口监听器，拦截窗口关闭事件 addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { // 在这里阻止窗口关闭，可以弹出提示信息或者执行其他操作 System.out.println("对话框无法关闭！"); } }); } public static void main(String[] args) { Un closableDialog dialog = new Un closableDialog(); dialog.setSize(400, 300); // 设置窗口大小 dialog.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); // 阻止默认的窗口关闭行为 dialog.setVisible(true); // 显示对话框 } } ``` 在C#中，我们可以使用Form类，并覆盖`OnFormClosing`事件： ```csharp using System.Windows.Forms; public partial class UnClosableDialog : Form { public UnClosableDialog() { InitializeComponent(); this.FormClosing += OnFormClosing; // 注册关闭事件处理 } private void OnFormClosing(object sender, FormClosingEventArgs e) { e.Cancel = true; // 阻止关闭 MessageBox.Show("对话框无法关闭！"); } } ``` Python的tkinter库中，可以使用Toplevel或Tk作为对话框基础，然后修改`protocol`方法： ```python from tkinter import * def prevent_close(): messagebox.showinfo("提示", "对话框无法关闭！") root = Tk() root.protocol("WM_DELETE_WINDOW", prevent_close) # 修改关闭事件处理 root.title("不可关闭的对话框") root.mainloop() ``` 这些示例都展示了如何在不同编程环境中阻止对话框的默认关闭行为。然而，这种做法在用户体验上可能并不理想，因为用户通常期望有控制权来关闭窗口。因此，在实际应用中，应谨慎使用此类设计，并确保有足够的理由让用户不能关闭对话框，同时提供明确的指引告知用户如何继续或结束交互。

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商业编程-源码-创建一个不可关闭的对话框.zip （18个子文件）

创建一个不可关闭的对话框

dlgforever

Resource.h 542B

dlgforever.opt 53KB

dlgforever.h 1KB

res

dlgforever.rc2 402B

dlgforever.ico 1KB

dlgforever.aps 35KB

dlgforeverDlg.cpp 4KB

dlgforever.clw 1KB

dlgforever.ncb 49KB

dlgforever.dsw 543B

StdAfx.cpp 212B

StdAfx.h 1KB

dlgforever.rc 5KB

dlgforeverDlg.h 1KB

dlgforever.cpp 2KB

dlgforever.dsp 4KB

ReadMe.txt 4KB

dlgforever.plg 704B

**************************** 华软源码：http://www.hur.cn **************************** ======================================================================== MICROSOFT FOUNDATION CLASS LIBRARY : dlgforever ======================================================================== AppWizard has created this dlgforever application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application. This file contains a summary of what you will find in each of the files that make up your dlgforever application. dlgforever.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. dlgforever.h This is the main header file for the application. It includes other project specific headers (including Resource.h) and declares the CDlgforeverApp application class. dlgforever.cpp This is the main application source file that contains the application class CDlgforeverApp. dlgforever.rc This is a listing of all of the Microsoft Windows resources that the program uses. It includes the icons, bitmaps, and cursors that are stored in the RES subdirectory. This file can be directly edited in Microsoft Visual C++. dlgforever.clw This file contains information used by ClassWizard to edit existing classes or add new classes. ClassWizard also uses this file to store information needed to create and edit message maps and dialog data maps and to create prototype member functions. res\dlgforever.ico This is an icon file, which is used as the application's icon. This icon is included by the main resource file dlgforever.rc. res\dlgforever.rc2 This file contains resources that are not edited by Microsoft Visual C++. You should place all resources not editable by the resource editor in this file. ///////////////////////////////////////////////////////////////////////////// AppWizard creates one dialog class: dlgforeverDlg.h, dlgforeverDlg.cpp - the dialog These files contain your CDlgforeverDlg class. This class defines the behavior of your application's main dialog. The dialog's template is in dlgforever.rc, which can be edited in Microsoft Visual C++. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named dlgforever.pch and a precompiled types file named StdAfx.obj. Resource.h This is the standard header file, which defines new resource IDs. Microsoft Visual C++ reads and updates this file. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. If your application uses MFC in a shared DLL, and your application is in a language other than the operating system's current language, you will need to copy the corresponding localized resources MFC42XXX.DLL from the Microsoft Visual C++ CD-ROM onto the system or system32 directory, and rename it to be MFCLOC.DLL. ("XXX" stands for the language abbreviation. For example, MFC42DEU.DLL contains resources translated to German.) If you don't do this, some of the UI elements of your application will remain in the language of the operating system. /////////////////////////////////////////////////////////////////////////////