LoadLibrary是否解析%windir%等环境变量
如果我这样做 LoadLibrary("%windir%\\system32\\ole32.dll") 是否意味着 Windows 将仅从“c:\windows\system32\ole32”加载.dll”？ C 中的 LoadLibrary() 是否理解环境变量？
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正如 Serge 所说并经过仔细测试，LoadLibrary 不会在路径中进行环境变量替换。
但是，Windows API中有一个函数可以替换字符串中的环境变量：
ExpandEnvironmentStrings()。您可以在调用LoadLibrary()之前对路径执行所需的替换。as Serge said and carefully tested, LoadLibrary does not do environment variable substitution in path.
however, there is a function in the windows API to replace environment variables in strings:
ExpandEnvironmentStrings(). you can perform the required substitution on your path before callingLoadLibrary().LoadLibrary 文档明确指出:
也就是说，他们没有提到对环境变量替换的支持。我严重怀疑它们是否支持环境变量替换：这是一项 shell 功能，而不是内核 API 功能。
顺便说一句，这意味着
LoadLibrary()会将%windir%\blah.dll视为相对路径，因为它不以驱动器号或 UNC 路径开头。因此，它会遍历整个目录系列，寻找名为%windir%的子目录，但它不太可能找到！我快速测试了一下：它证实了我的观点。错误 = 126：找不到指定的模块。
The docs for LoadLibrary clearly state that:
That said, they don't mention support for environment variables substitution. I seriously doubt they do support environment variables substitution: That's a shell feature, not a kernel API one.
BTW, that means
LoadLibrary()would consider%windir%\blah.dllas a relative path since it doesn't start with a drive letter or a UNC path. Hence it would look through the whole series of directories, looking for a subdir named%windir%, which it's not likely to find!I gave it a quick test: It confirms my opinion. Error = 126 : The specified module could not be found.