控件类

• Data source control classes can support one or more views on their underlying data
  数据源控件类可以支持其基础数据的一个或多个视图。这些视图由
• To derive from an existing control class , store the system class name in this property
  若要从现有的控件类派生，请将系统类的名称存储于该属性中。
• The project includes a control class and a property page class , based on the name of the project
  项目包括基于项目名称的控件类和属性页类。可以在
• Demonstrates authoring a user control , a control class library , and inheriting from a user control
  演示创作用户控件、控件类库和从用户控件的继承。
• The following code example shows a property that belongs to a derived data - bound control class
  下面的代码示例演示属于派生的数据绑定控件类的属性。
• For each new property in the specialized class , provide a property in the control class itself
  对于专用类中的每个新属性，在控件类本身中提供一个属性。
• For information about how to create a windows forms user control and author a control class library , see
  有关如何创建windows窗体用户控件和创作控件类库的信息，请参见
• A value that identifies a particular control class to a factory object which can instantiate objects of that class
  可以实例化类对象的对象厂标记特定控件类使用的值。
• Or object to notify other classes or objects when something of interest happens . the class that sends or
  控件类不关心单击按钮时发生了什么，但它需要告知派生类单击事件已发生。
• To do so , it will need a handler function and an appropriate entry in the control ' s class message map
  为了达到这样的目的，在控件类消息映射中需要一个处理函数和一个合适的入口。