// UnExpandTest.cpp
// Copyright (C) 2018 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
// This file is public domain software.
#include <windows.h>
#include <shlwapi.h>
#include <cstdio>
using namespace std;

int main(void)
{
    CHAR szPathA[MAX_PATH];
    WCHAR szPathW[MAX_PATH];
    DWORD ret;

    ret = PathUnExpandEnvStringsA("%ProgramFiles%\\Test", szPathA, MAX_PATH);
    printf("PathUnExpandEnvStringsA: %d: %s\n", ret, szPathA);

    ret = PathUnExpandEnvStringsA("%SystemRoot%\\Test.txt", szPathA, MAX_PATH);
    printf("PathUnExpandEnvStringsA: %d: %s\n", ret, szPathA);

    ret = PathUnExpandEnvStringsW(L"%ProgramFiles%\\Test", szPathW, MAX_PATH);
    printf("PathUnExpandEnvStringsW: %d: %ls\n", ret, szPathW);

    ret = PathUnExpandEnvStringsW(L"%SystemRoot%\\Test.txt", szPathW, MAX_PATH);
    printf("PathUnExpandEnvStringsW: %d: %ls\n", ret, szPathW);

    ret = ExpandEnvironmentStringsA("%ProgramFiles%\\C:\\Program Files\\Test", szPathA, MAX_PATH);
    printf("ExpandEnvironmentStringsA: %d: %s\n", ret, szPathA);

    ret = ExpandEnvironmentStringsA("%ProgramFiles%\\C:\\Windows\\Test.txt", szPathA, MAX_PATH);
    printf("ExpandEnvironmentStringsA: %d: %s\n", ret, szPathA);

    ret = ExpandEnvironmentStringsW(L"%ProgramFiles%\\C:\\Program Files\\Test", szPathW, MAX_PATH);
    printf("ExpandEnvironmentStringsW: %d: %ls\n", ret, szPathW);

    ret = ExpandEnvironmentStringsW(L"%ProgramFiles%\\C:\\Windows\\Test.txt", szPathW, MAX_PATH);
    printf("ExpandEnvironmentStringsW: %d: %ls\n", ret, szPathW);
    ret = PathUnExpandEnvStringsA("C:\\Program Files\\Test", szPathA, MAX_PATH);
    printf("PathUnExpandEnvStringsA: %d: %s\n", ret, szPathA);

    ret = PathUnExpandEnvStringsA("C:\\Windows\\Test.txt", szPathA, MAX_PATH);
    printf("PathUnExpandEnvStringsA: %d: %s\n", ret, szPathA);

    ret = PathUnExpandEnvStringsW(L"C:\\Program Files\\Test", szPathW, MAX_PATH);
    printf("PathUnExpandEnvStringsW: %d: %ls\n", ret, szPathW);

    ret = PathUnExpandEnvStringsW(L"C:\\Windows\\Test.txt", szPathW, MAX_PATH);
    printf("PathUnExpandEnvStringsW: %d: %ls\n", ret, szPathW);

    ret = ExpandEnvironmentStringsA("C:\\Program Files\\Test", szPathA, MAX_PATH);
    printf("ExpandEnvironmentStringsA: %d: %s\n", ret, szPathA);

    ret = ExpandEnvironmentStringsA("C:\\Windows\\Test.txt", szPathA, MAX_PATH);
    printf("ExpandEnvironmentStringsA: %d: %s\n", ret, szPathA);

    ret = ExpandEnvironmentStringsW(L"C:\\Program Files\\Test", szPathW, MAX_PATH);
    printf("ExpandEnvironmentStringsW: %d: %ls\n", ret, szPathW);

    ret = ExpandEnvironmentStringsW(L"C:\\Windows\\Test.txt", szPathW, MAX_PATH);
    printf("ExpandEnvironmentStringsW: %d: %ls\n", ret, szPathW);

    return 0;
}

/*
Output:

C:\MinGW\Progs>g++ UnExpandTest3.cpp -lshlwapi -o UnEx3.exe

C:\MinGW\Progs>unex3
PathUnExpandEnvStringsA: 0: b?¯wrG¦w8?¯w¬§oP)P@
PathUnExpandEnvStringsA: 0: b?¯wrG¦w8?¯w¬§oP)P@
PathUnExpandEnvStringsW: 0:
PathUnExpandEnvStringsW: 0:
ExpandEnvironmentStringsA: 45: C:\Program Files (x86)\C:\Program Files\Test
ExpandEnvironmentStringsA: 43: C:\Program Files (x86)\C:\Windows\Test.txt
ExpandEnvironmentStringsW: 45: C:\Program Files (x86)\C:\Program Files\Test
ExpandEnvironmentStringsW: 43: C:\Program Files (x86)\C:\Windows\Test.txt
PathUnExpandEnvStringsA: 1: %SystemDrive%\Program Files\Test
PathUnExpandEnvStringsA: 1: %SystemRoot%\Test.txt
PathUnExpandEnvStringsW: 1: %SystemDrive%\Program Files\Test
PathUnExpandEnvStringsW: 1: %SystemRoot%\Test.txt
ExpandEnvironmentStringsA: 22: C:\Program Files\Test
ExpandEnvironmentStringsA: 20: C:\Windows\Test.txt
ExpandEnvironmentStringsW: 22: C:\Program Files\Test
ExpandEnvironmentStringsW: 20: C:\Windows\Test.txt

C:\MinGW\Progs>
*/