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======================================================================== MICROSOFT FOUNDATION CLASS LIBRARY : MyOdbcSmpl ======================================================================== AppWizard has created this MyOdbcSmpl 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 MyOdbcSmpl application. MyOdbcSmpl.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. MyOdbcSmpl.h This is the main header file for the application. It includes other project specific headers (including Resource.h) and declares the CMyOdbcSmplApp application class. MyOdbcSmpl.cpp This is the main application source file that contains the application class CMyOdbcSmplApp. MyOdbcSmpl.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++. MyOdbcSmpl.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\MyOdbcSmpl.ico This is an icon file, which is used as the application's icon. This icon is included by the main resource file MyOdbcSmpl.rc. res\MyOdbcSmpl.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. ///////////////////////////////////////////////////////////////////////////// For the main frame window: MainFrm.h, MainFrm.cpp These files contain the frame class CMainFrame, which is derived from CMDIFrameWnd and controls all MDI frame features. res\Toolbar.bmp This bitmap file is used to create tiled images for the toolbar. The initial toolbar and status bar are constructed in the CMainFrame class. Edit this toolbar bitmap using the resource editor, and update the IDR_MAINFRAME TOOLBAR array in MyOdbcSmpl.rc to add toolbar buttons. ///////////////////////////////////////////////////////////////////////////// For the child frame window: ChildFrm.h, ChildFrm.cpp These files define and implement the CChildFrame class, which supports the child windows in an MDI application. ///////////////////////////////////////////////////////////////////////////// AppWizard creates one document type and one view: MyOdbcSmplDoc.h, MyOdbcSmplDoc.cpp - the document These files contain your CMyOdbcSmplDoc class. Edit these files to add your special document data and to implement file saving and loading (via CMyOdbcSmplDoc::Serialize). MyOdbcSmplView.h, MyOdbcSmplView.cpp - the view of the document These files contain your CMyOdbcSmplView class. CMyOdbcSmplView objects are used to view CMyOdbcSmplDoc objects. res\MyOdbcSmplDoc.ico This is an icon file, which is used as the icon for MDI child windows for the CMyOdbcSmplDoc class. This icon is included by the main resource file MyOdbcSmpl.rc. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named MyOdbcSmpl.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. ///////////////////////////////////////////////////////////////////////////// 实例有关说明： 数据源：本实例使用的数据源在本章实例MyOdbcSmpl目录中，数据源为ACCESS数据源，数 据文件为Mydb.mdb。请根据本章2.4.1创建ODBC数据源中所指示的ODBC数据源管 理器（ODBC32.exe）来创建和配置数据源MyDB（也可以命名为其他名称）。 执行结果：本章实例的执行结果MyOdbcSmpl目录中的可执行文件MyOdbcSmpl.exe。在数据 源中选择刚配置的MyDB，在数据表或视图中选择要查询的表或视图，选择查询的 列，如果有查询条件，请在查询条件中输入，最后确定是否输出显示查询结果， 缺省为显示，单击“执行”按钮，执行查询并显示查询结果，在SQL语句框中显 示执行的查询。 源程序：本章实例的源程序都在MyOdbcSmpl目录中，可以根据本书给出的源程序说明，参 考源程序。