undefined reference to `CreateEventExW

回答: 当出现"undefined reference to `CreateEventExW`"这样的错误时，意味着在当前的符号表中找不到`CreateEventExW`函数的定义。这通常是由于缺少相应的库文件引起的。为了解决这个问题，你需要通过使用`-l`指令告知链接器需要链接哪些库，以便找到相应的符号定义。具体来说，对于`CreateEventExW`函数，你可能需要链接Windows API库，例如`-lkernel32`。这样，链接器就能找到`CreateEventExW`函数的定义并解决"undefined reference"错误。\[2\]
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