请包含哪些头文件才能使用_variant_t类？ [英] Please what header file must one include to be able to use the _variant_t class?

问题描述

请为了能够使用_variant_t类而必须包含哪个头文件？

或者导入哪个文件才能使用该类？

Please what header file must one include to be able to use the _variant_t class?
Or what file will one import to be able to use the class?

推荐答案

通过阅读您尝试使用的类的MSDN文档，您可以非常轻松地找到答案。许多不同的类使用 variant_t ，因此您需要检查特定的标头要求。

You could find the answer to this quite easily by reading the MSDN documentation for the class you are trying to use. variant_t is used by many different classes so you need to check for the specific header requirements.

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