//https://my.oschina.net/macwe/blog/348656
//Windows:服务程序用当前登录用户来执行函数
#include <Wtsapi32.h>
#pragma comment(lib, "Wtsapi32.lib")

BOOL CurrentUserIsLocalSystem()
{
    BOOL bIsLocalSystem = FALSE;
    PSID psidLocalSystem;
    SID_IDENTIFIER_AUTHORITY ntAuthority = SECURITY_NT_AUTHORITY;

    BOOL fSuccess = ::AllocateAndInitializeSid(&ntAuthority, 1, SECURITY_LOCAL_SYSTEM_RID,
                                        0, 0, 0, 0, 0, 0, 0, &psidLocalSystem);
    if (fSuccess) 
    {
        fSuccess = ::CheckTokenMembership(0, psidLocalSystem, &bIsLocalSystem);
        ::FreeSid(psidLocalSystem);
    }

    return bIsLocalSystem;
}

HANDLE hTokenUser = NULL;
DWORD ConsoleSessionId = 0;
BOOL bImpersonateLoggedOnUser = FALSE;
char userName[256] = {0};
DWORD userNameLen = sizeof(userName);

GetUserName(userName, &userNameLen);
if (0 == stricmp("SYSTEM", userName))
{
    // 得到当前激活用户的会话ID
    ConsoleSessionId = WTSGetActiveConsoleSessionId();
    // 得到当前登录用户的令牌
    if (WTSQueryUserToken(ConsoleSessionId, &hTokenUser))
    {
        // 模仿成当前登录用户
        bImpersonateLoggedOnUser = ImpersonateLoggedOnUser(hTokenUser);
    }
}

// 终止模拟，返回
if (bImpersonateLoggedOnUser)
{
    RevertToSelf();
}

//微软给的代码可以模拟客户端 ——C++ 中启动交互式客户端进程
https://docs.microsoft.com/zh-cn/previous-versions/aa379608(v=vs.85)