SHGetFolderPath获取特殊目录
https://msdn.microsoft.com/en-us/library/windows/desktop/bb762494.aspx
https://blog.csdn.net/u010061748/article/details/72518664
wchar_t file_path[MAX_PATH];
std::wstring file_root_path;
if (SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, 0, file_path) != S_OK)
{
return false;
}
C:\\Users\\pc\\AppData\\Roaming
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