此问题在此处已有答案：

What’s the purpose of an exclamation mark at the start of a block comment? (That is, "/*! … */")（3个答案）
昨天关门了。
我在c++中有一个头文件，其中函数的声明有以“!“感叹号开头的块注解。
示例

class test{
 public:
        /*! @fn test::test()
            @brief The basic constructor, which initializes the _test handle.
        */
        test();

        /*! @fn test::upload(std::string url)
            @brief A function to execute a http POST request with the given url and image.

            @param[in] url The url we are POSTing to
            @return The response of the server
        */
        std::string upload(std::string url);
}

此外，它还像这样更改VSCode中注解的颜色：

这些评论开头的感叹号是什么意思？