========================================================================
MICROSOFT FOUNDATION CLASS LIBRARY : RichEdit_RW
========================================================================
AppWizard has created this RichEdit_RW 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 RichEdit_RW application.
RichEdit_RW.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.
RichEdit_RW.h
This is the main header file for the application. It includes other
project specific headers (including Resource.h) and declares the
CRichEdit_RWApp application class.
RichEdit_RW.cpp
This is the main application source file that contains the application
class CRichEdit_RWApp.
RichEdit_RW.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++.
RichEdit_RW.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\RichEdit_RW.ico
This is an icon file, which is used as the application's icon. This
icon is included by the main resource file RichEdit_RW.rc.
res\RichEdit_RW.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:
RichEdit_RWDlg.h, RichEdit_RWDlg.cpp - the dialog
These files contain your CRichEdit_RWDlg class. This class defines
the behavior of your application's main dialog. The dialog's
template is in RichEdit_RW.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 RichEdit_RW.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.
/////////////////////////////////////////////////////////////////////////////
MFC分页控件/分页读取/分页写文件
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在本文中,我们将深入探讨MFC(Microsoft Foundation Classes)中的分页控件、分页读取和分页写文件的概念,以及如何在实际应用中实现这些功能。MFC是微软提供的一套C++库,用于简化Windows应用程序的开发,它包含了许多与Windows API交互的类。
**MFC分页控件**
MFC中的分页控件通常是通过`CPropertySheet`类来实现的,它可以创建一个多页对话框,每一页由一个`CPropertyPage`类的实例表示。`CPropertySheet`充当主窗口,而`CPropertyPage`则代表每个单独的“页面”。分页控件通常用于设置多个相关的配置选项或显示不同的信息内容。例如,你可以用一个分页控件来创建一个设置向导,每个页面专注于一个特定的设置领域。
**分页读取**
分页读取是一种数据处理策略,特别是在处理大量数据时非常有用。当需要从数据库、文件或其他数据源读取数据时,不是一次性加载所有数据,而是每次只加载一部分(一页)数据。这样可以提高应用程序的性能,减少内存占用,并且对用户来说更加响应迅速。在MFC中,可以使用`CRecordset`类进行分页读取,通过设置记录集的大小来控制每次检索的数据量。
例如,如果你有一个包含数千条记录的数据库表,可以设置`CRecordset`的`SetRowsetSize`方法来指定每次查询的记录数。当用户翻页时,可以调用`MoveNext`或`MovePrev`方法来移动到下一页或上一页。
**分页写文件**
分页写文件的概念与分页读取类似,但适用于写入操作。在处理大文件时,一次性将整个文件内容写入磁盘可能会导致性能问题。分页写入允许你将大文件拆分为较小的部分,然后逐个写入。在MFC中,可以使用`CFile`类来实现这个功能。通过打开文件并使用`Seek`方法定位到要写入的位置,然后使用`Write`方法写入特定长度的数据,就可以实现分页写入。
**RichEdit_RW**
在提供的文件列表中提到了`RichEdit_RW`,这可能指的是与富文本编辑有关的代码或资源。`RichEdit`控件允许在应用程序中实现具有多种格式(如字体、颜色、样式等)的文本编辑功能。在MFC中,`CRichEditCtrl`类提供了对`RichEdit`控件的封装,可以进行文本的读取和写入操作。如果`RichEdit_RW`是一个示例项目或库,它可能包含关于如何使用`CRichEditCtrl`进行读写操作的代码示例。
MFC分页控件、分页读取和分页写文件是构建高效、响应的Windows应用程序的关键技术。通过合理利用这些技术,开发者可以创建出用户体验良好且性能优秀的软件。对于`RichEdit_RW`,进一步的分析和研究将有助于了解如何在MFC环境中实现富文本编辑的读写功能。
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