在使用APICall GetTokenInformation时,可能会返回错误值。下面是一个解决方法的示例代码:
#include 
#include 
#include 
int main() {
    HANDLE currentToken;
    DWORD tokenInfoSize;
    PTOKEN_USER tokenUser = NULL;
    BOOL result;
    // 获取当前进程的访问令牌
    result = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, ¤tToken);
    if (!result) {
        std::cout << "OpenProcessToken failed with error code: " << GetLastError() << std::endl;
        return 1;
    }
    // 获取令牌信息的大小
    result = GetTokenInformation(currentToken, TokenUser, NULL, 0, &tokenInfoSize);
    if (!result && GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
        std::cout << "GetTokenInformation failed with error code: " << GetLastError() << std::endl;
        CloseHandle(currentToken);
        return 1;
    }
    // 分配内存来存储令牌信息
    tokenUser = (PTOKEN_USER)GlobalAlloc(GPTR, tokenInfoSize);
    if (tokenUser == NULL) {
        std::cout << "GlobalAlloc failed with error code: " << GetLastError() << std::endl;
        CloseHandle(currentToken);
        return 1;
    }
    // 获取令牌信息
    result = GetTokenInformation(currentToken, TokenUser, tokenUser, tokenInfoSize, &tokenInfoSize);
    if (!result) {
        std::cout << "GetTokenInformation failed with error code: " << GetLastError() << std::endl;
        GlobalFree(tokenUser);
        CloseHandle(currentToken);
        return 1;
    }
    // 获取用户的SID
    LPWSTR userSid;
    result = ConvertSidToStringSidW(tokenUser->User.Sid, &userSid);
    if (!result) {
        std::cout << "ConvertSidToStringSidW failed with error code: " << GetLastError() << std::endl;
        GlobalFree(tokenUser);
        CloseHandle(currentToken);
        return 1;
    }
    // 打印用户的SID
    std::wcout << "User SID: " << userSid << std::endl;
    // 释放资源
    LocalFree(userSid);
    GlobalFree(tokenUser);
    CloseHandle(currentToken);
    return 0;
}
   这个示例代码会获取当前进程的访问令牌,并使用APICall GetTokenInformation来获取令牌信息。如果GetTokenInformation返回错误值,代码会打印相应的错误信息,并释放之前分配的内存和句柄。