Completely using API to create forms, menus, buttons and other controls, for understanding the message handling mechanism for Windows has certainly helped.

Packet : 25811219vbdosapi.rar filelist
API 编写的窗体,按钮,菜单例子\Class\Class_Application.cls
API 编写的窗体,按钮,菜单例子\Class\Class_Button.cls
API 编写的窗体,按钮,菜单例子\Class\Class_Form.cls
API 编写的窗体,按钮,菜单例子\Class\Class_MenuItem.cls
API 编写的窗体,按钮,菜单例子\Class\Class_MenuItems.cls
API 编写的窗体,按钮,菜单例子\Class\Class_MenuManage.cls
API 编写的窗体,按钮,菜单例子\Class\Class_Screen.cls
API 编写的窗体,按钮,菜单例子\Class\Class_Subclass.cls
API 编写的窗体,按钮,菜单例子\Class\Class_Main.cls
API 编写的窗体,按钮,菜单例子\Class
API 编写的窗体,按钮,菜单例子\Module\ModuleTrusteeship.bas
API 编写的窗体,按钮,菜单例子\Module\ModuleMain.bas
API 编写的窗体,按钮,菜单例子\Module
API 编写的窗体,按钮,菜单例子\Project\ClassWindow.vbw
API 编写的窗体,按钮,菜单例子\Project\MSSCCPRJ.SCC
API 编写的窗体,按钮,菜单例子\Project\ClassWindow.vbp
API 编写的窗体,按钮,菜单例子\Project
API 编写的窗体,按钮,菜单例子\Release
API 编写的窗体,按钮,菜单例子

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