有没有办法使用 win API 获取 HRESULT 值的字符串表示?

2021-12-18 00:00:00 windows winapi c++ clr hresult

win API 中是否有一个函数可以用来提取 HRESULT 值的字符串表示?

Is there a function in win API which can be used to extract the string representation of HRESULT value?

问题是并非所有返回值都记录在 MSDN 中,例如 ExecuteInDefaultAppDomain() 函数没有记录为返回0x80070002 - 系统找不到指定的文件.",但是,它确实如此!所以,我想知道是否有一个函数可以在普通情况下使用.

The problem is that not all return values are documented in MSDN, for example ExecuteInDefaultAppDomain() function is not documented to return "0x80070002 - The system cannot find the file specified.", however, it does! Therefore, I was wondering whether there is a function to be used in common case.

推荐答案

您可以使用 _com_error:

_com_error err(hr);
LPCTSTR errMsg = err.ErrorMessage();

如果您出于任何原因不想使用 _com_error,您仍然可以查看其源代码,看看它是如何完成的.

If you don't want to use _com_error for whatever reason, you can still take a look at its source, and see how it's done.

不要忘记包含标题 comdef.h

相关文章