MessageFilter 构造函数

定义

在派生类中调用时,初始化 MessageFilter 类的新实例。When called in a derived class, initializes a new instance of the MessageFilter class.

protected:
 MessageFilter();
protected MessageFilter ();
Protected Sub New ()

注解

构造函数受保护,因此只有从 MessageFilter 派生的筛选器可以被实例化。The constructor is protected so that only filters that derive from MessageFilter can be instantiated.

适用于