c++ 如何路径 LocalAppData 文件夹

Question

I need to find the path of this file:

("C:\\Users\\*username*\\AppData\\Local")

I tried everything but I couldn't because of the username

If anyone knows, can they explain how I should get the LocalAppData path?

Answer 1

The correct way to do this is to call SHGetKnownFolderPath with FOLDERID_LocalAppData :

#include <Windows.h>
#include <iostream>
#include <shlobj_core.h>
#include <KnownFolders.h>

int main() {
    PWSTR path = NULL;
    HRESULT hres = SHGetKnownFolderPath(FOLDERID_LocalAppData, 0, NULL, &path);
    if (SUCCEEDED(hres)) {
        std::wcout << std::wstring(path) << std::endl;
        CoTaskMemFree(path);
    }
    return 0;
}

There is also an environment variable LOCALAPPDATA that you could use, but it's not guaranteed to contain the expected value since it can be modified by the parent process.

Answer 2

you can use the SHGetFolderPath function (for maximum compatibility)

you have to specify the CSIDL value for the folder you want, in your case would be CSIDL_LOCAL_APPDATA

after windows vista you can instead use SHGetKnowFolderPath , which also requires the folder KNOWFOLDERID , in your case this would be FOLDERID_LocalAppData . For use this you have to include shlobj.h