类似于资源管理器列出目录和文件的源码资源-CSDN文库

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htm：1个

zip：1个

gif：1个

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在Windows操作系统中，资源管理器是一个非常重要的工具，它允许用户浏览、管理和组织计算机上的文件和文件夹。本文将深入探讨“类似于资源管理器列出目录和文件的源码”这一主题，主要关注CExplorerView类的使用。 CExplorerView类是MFC（Microsoft Foundation Classes）库中提供的一种视图类，它是对Windows Explorer功能的模拟。在MFC框架下，CExplorerView类通常用于创建一个界面，该界面能够显示文件系统的内容，包括文件和目录，就像Windows自带的资源管理器一样。CExplorerView类继承自CListView类，后者是MFC对Windows List View控件的封装，因此它具有展示列表项的能力。创建一个CExplorerView实例时，你需要做以下几件事： 1. **初始化视图**：在派生类的构造函数中，你需要调用CExplorerView的基类构造函数，并传递必要的参数，如窗口句柄、父窗口指针等。 2. **重写OnCreate()**：你需要覆盖CExplorerView的OnCreate()成员函数，进行必要的初始化操作，比如设置视图的样式，以及创建和填充列头。 3. **处理消息映射**：为响应用户的操作，如点击、拖放等，你需要定义和实现消息映射，将特定的消息与相应的处理函数关联起来。 4. **更新视图**：当文件系统发生变化时，如新建、删除或重命名文件和目录，你需要重载OnInitialUpdate()或OnUpdate()函数，以便实时刷新视图内容。 5. **文件操作支持**：CExplorerView可能需要支持常见的文件操作，如打开、复制、剪切、粘贴、删除等。这通常涉及到处理WM_COMMAND消息，以及调用系统API函数来执行实际的文件操作。 6. **图像列表**：为了显示缩略图或者图标，你需要创建一个图像列表，并将其与CExplorerView关联。例如，`explorer.gif`可能是用来表示文件或目录的图标。 7. **HTML帮助文档**：`views1.htm`可能是一个帮助文档，解释了如何使用或定制这个类，或者提供了关于CExplorerView类的更多信息。 8. **资源管理**：`explorer.zip`可能包含额外的资源文件，如自定义的图标、对话框模板或其他图形元素，需要解压并正确地加载到应用程序中。理解CExplorerView类的工作原理并熟练运用，可以让你创建出一个功能强大的文件管理应用程序，具备类似Windows资源管理器的用户体验。在实际开发中，你还需要考虑到性能优化、错误处理和用户界面的易用性等问题。通过不断学习和实践，你可以掌握更多的MFC和文件系统操作技巧，提升你的软件开发能力。

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Windows_Explorer_like_application.zip （3个子文件）

explorer.zip 43KB

explorer.gif 9KB

views1.htm 5KB

<HTML><HEAD><TITLE>Views</TITLE> </HEAD> <body bgcolor="ffffdd"> <table width="100%" cellpadding=3 cellspacing=0> <tr> <td> </td> </tr> <tr> <td valign=top bgcolor="#e0e0e0"> Windows Explorer like application </td> </tr> <tr> <td valign=top bgcolor="#f0f0f0"> <ul> <LI>Brief Intro</LI> </ul> <BLOCKQUOTE> This article creates an application which is similar to Windows Explorer. This article does not only display the directory and files but also displays icons of the respective file types as is displayed in Windows Explorer. If you select Windows Explorer instead of MFC Standard in in AppWizard's step 5 dialog box, AppWizard adds code to create a static splitter window. It also derives a pair of view classes-one from CTreeView (CLeftView), the other from CListView (CExplorerView) or the view class of your choice-and places them in the splitter window's panes. Despite the outward similarities between this application and the Windows Explorer, there is a fundamental difference between these applications. My application displays only the drives, directory and the files and not the desktop, My Computer etc. </BLOCKQUOTE> <BLOCKQUOTE>The Tree View </BLOCKQUOTE> <BLOCKQUOTE> In OnInitialUpdate( ) handler of CLeftView, AddDrives( ) function is called to insert all the drives in the tree control. Adddirectories( ) function gets called when user double clicks on the item of the tree view control to expand the tree. the DeleteFirstChild( ) and DeleteAllChildren( ) functions are called at the time of collapsing the tree. </BLOCKQUOTE> <BLOCKQUOTE>The List View Control </BLOCKQUOTE> <BLOCKQUOTE> The items in the list view control are added in the Refresh( ) function. Refresh( ) function is called each time when the view is updated. In OnInitialUpdate( ) function two image lists (one for small view and other for large view) are created to which items will be added dynamically. Three columns namely FileName, Size and Last Modified have been inserted. A function createlist is called to add the images to the image lists. The number of images to be added to the list depends upon the type of files ( c, c++, jpg, gif, asp etc) in your machine. Since list has to be created dynamically nobody can gase the number of images in the list. Hence an object of CObArray has been created. Windows displays different icons for the different file types. I have tried to get the icons of maximum types of files from the registry and display it against that file. Reading the file extension, retrieving the default icon for the file and storing it in the array is a bit complicated task. I have followed the following steps to reach to the default icon: </BLOCKQUOTE> <BLOCKQUOTE> (a) Read all those sub-keys of HKEY_CLASSES_ROOT key that are the extensions of files (b) The default value of these keys happens to be the subkey of HKEY_CLASSES_ROOT (c) This key has a sub-key called DefaultIcon. (d) The default value of DefaultIcon key is the path of exe file and index of the icon. </BLOCKQUOTE> <BLOCKQUOTE> Once the path and number is received the icon is extracted using ::ExtractIcon( ) function and is added to the list. In case of some files like .exe, .ico, .cur they have their own icons. Icons of these files are read in AddItem( ) function. Some of the .exe files do not possess their own icon. Such files get 0th icon of shell32.dll file (logo of Windows). Similarly the files for which no icons are found after following the above mentioned steps the same icon (logo of Windows) is given. However there is a limitation. If the default icons are retrieved by following the above mentioned way we don't get icons for some of the files. If anyone knows a better way to display the icons please contact me at kanet@nagpur.dot.net.in </BLOCKQUOTE> <UL> <CENTER><IMG SRC="explorer.gif" width="480" height="268"> </CENTER> </UL> <UL><A HREF="explorer.zip">Download</A> </UL></td> </tr> </table> </body> </HTML>

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