[C#/WIN32] WTSQuerySessionInformationW API 함수 선언하기

■ WTSQuerySessionInformationW API 함수를 선언하는 방법을 보여준다.

 

▶ 예제 코드 (C#)

using System;
using System.Runtime.InteropServices;

#region WTS 세션 정보 질의하기 - WTSQuerySessionInformationW(serverHandle, sessionID, wtsInfoClass, bufferHandle, byteCountReturned)

/// <summary>
/// WTS 세션 정보 질의하기
/// </summary>
/// <param name="serverHandle">서버 핸들</param>
/// <param name="sessionID">세션 ID</param>
/// <param name="wtsInfoClass">WTS 정보 클래스</param>
/// <param name="bufferHandle">버퍼 핸들</param>
/// <param name="byteCountReturned">반환 바이트 카운트</param>
/// <returns>처리 결과</returns>
[DllImport("wtsapi32", CharSet = CharSet.Unicode)]
private static extern bool WTSQuerySessionInformationW
(
    IntPtr         serverHandle,
    uint           sessionID,
    WTS_INFO_CLASS wtsInfoClass,
    ref IntPtr     bufferHandle,
    ref uint       byteCountReturned
);

#endregion

/// <summary>
/// 배정도 정수
/// </summary>
[StructLayout(LayoutKind.Explicit)]
public struct LARGE_INTEGER
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Field
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region Field

    /// <summary>
    /// 하위 파트
    /// </summary>
    [FieldOffset(0)]
    public uint LowPart;

    /// <summary>
    /// 상위 파트
    /// </summary>
    [FieldOffset(4)]
    public int HighPart;

    /// <summary>
    /// 쿼드 파트
    /// </summary>
    [FieldOffset(0)]
    public long QuadPart;

    #endregion
}

/// <summary>
/// WTS 정보 확장 레벨 1 (유니코드)
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct WTSINFOEX_LEVEL1_W
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Field
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region Field

    /// <summary>
    /// 세션 ID
    /// </summary>
    public int SessionID;

    /// <summary>
    /// 세션 상태
    /// </summary>
    public WTS_CONNECTSTATE_CLASS SessionState;

    /// <summary>
    /// 세션 플래그
    /// </summary>
    public int SessionFlag;

    /// <summary>
    /// WIN 스테이션명
    /// </summary>
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 33)]
    public string WinStationName;

    /// <summary>
    /// 사용자명
    /// </summary>
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 21)]
    public string UserName;

    /// <summary>
    /// 도메인명
    /// </summary>
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 18)]
    public string DomainName;

    /// <summary>
    /// 로그온 시간
    /// </summary>
    public LARGE_INTEGER LogonTime;

    /// <summary>
    /// 연결 시간
    /// </summary>
    public LARGE_INTEGER ConnectTime;

    /// <summary>
    /// 연결 중단 시간
    /// </summary>
    public LARGE_INTEGER DisconnectTime;

    /// <summary>
    /// 최근 입력 시간
    /// </summary>
    public LARGE_INTEGER LastInputTime;

    /// <summary>
    /// 현재 시간
    /// </summary>
    public LARGE_INTEGER CurrentTime;

    /// <summary>
    /// 수신 바이트 카운트
    /// </summary>
    public uint IncomingByteCount;

    /// <summary>
    /// 송신 바이트 카운트
    /// </summary>
    public uint OutgoingByteCount;

    /// <summary>
    /// 수신 프레임 카운트
    /// </summary>
    public uint IncomingFrameCount;

    /// <summary>
    /// 송신 프레임 카운트
    /// </summary>
    public uint OutgoingFrameCount;

    /// <summary>
    /// 수신 압축 바이트 카운트
    /// </summary>
    public uint IncomingCompressedByteCount;

    /// <summary>
    /// 송신 압축 바이트 카운트
    /// </summary>
    public uint OutgoingCompressedByteCount;

    #endregion
}

/// <summary>
/// WTS 정보 확장 레벨 (유니코드)
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct WTSINFOEX_LEVEL_W
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Field
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region Field

    /// <summary>
    /// WTS 정보 확장 레벨 1
    /// </summary>
    public WTSINFOEX_LEVEL1_W WTSInfoExLevel1;

    #endregion
}

/// <summary>
/// WTS 정보 확장 (유니코드)
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct WTSINFOEXW
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Field
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region Field

    /// <summary>
    /// 레벨
    /// </summary>
    public int Level;

    /// <summary>
    /// 데이터
    /// </summary>
    public WTSINFOEX_LEVEL_W Data;

    #endregion
}