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#include <Windows.h>

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char expandedPath[MAX_PATH];

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DWORD ExpandEnvironmentStrings(
LPCWSTR lpSrc,
LPWSTR  lpDst,
DWORD   nSize
);

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涓嬮潰鏄竴涓ず渚嬩唬鐮侊細

#include <Windows.h>
#include <iostream>
int main()
{
wchar_t src[50] = L"%SystemRoot%\\System32";
wchar_t dst[MAX_PATH];
DWORD result = ExpandEnvironmentStrings(src, dst, MAX_PATH);
if (result <= MAX_PATH)
{
std::wcout << L"Expanded path: " << dst << std::endl;
}
else
{
std::cout << "Buffer size too small. Expanded path: " << result << std::endl;
}
return 0;
}

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