VB6-没办法的对象Wrapper
请先看下边得代码:
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TestCommand继承了Command接口,如果采用
dim t as command的方式,将不能访问Count属性。
如果采用
dim t as testcommand方式,将不能访问Execute方法。
这样用起来就很难受,当然,如果在TestCommand中实现一个Public的Execute当然可以,但是就不好了,也可以声明多个对象,然后进行赋值,这样也不好,为了解决这个问题,使用CommandWrapper也许就是一个好的选择了,至少使用起来要好一点。