The IDispatch interface provides a method for looking up a COM interface's methods (or properties) symbolically by name, which then returns the method's dispid.

IDispatch接口提供了一种方法，该方法可以根据名称查找COM接口的方法(或者属性)，然后返回方法的dispid。

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The IDispatch interface also provides another method for invoking a COM interface's method given its dispid and an array of variants containing the call parameters.

IDispatch接口还提供了另外一个方法，可以通过dispid和包含调用参数的variant数组调用COM接口的方法。

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