[C#/WIN32] GetWindowLong API 함수 선언하기

■ GetWindowLong API 함수를 선언하는 방법을 보여준다.

 

▶ 예제 코드 (C#)

using System;
using System.Runtime.InteropServices;

#region 윈도우 정보 구하기 - GetWindowLong(windowHandle, index)

/// <summary>
/// 윈도우 정보 구하기
/// </summary>
/// <param name="windowHandle">윈도우 핸들</param>
/// <param name="index">인덱스</param>
/// <returns>처리 결과</returns>
[DllImport("user32", SetLastError = true)]
private static extern uint GetWindowLong(IntPtr windowHandle, int index);

#endregion

/// <summary>
/// GWL
/// </summary>
public enum GWL : int
{
    /// <summary>
    /// GWL_WNDPROC
    /// </summary>
    GWL_WNDPROC = -4,

    /// <summary>
    /// GWL_HINSTANCE
    /// </summary>
    GWL_HINSTANCE = -6,

    /// <summary>
    /// GWL_HWNDPARENT
    /// </summary>
    GWL_HWNDPARENT = -8,

    /// <summary>
    /// GWL_ID
    /// </summary>
    GWL_ID = -12,

    /// <summary>
    /// GWL_STYLE
    /// </summary>
    GWL_STYLE = -16,

    /// <summary>
    /// GWL_EXSTYLE
    /// </summary>
    GWL_EXSTYLE = -20,

    /// <summary>
    /// GWL_USERDATA
    /// </summary>
    GWL_USERDATA = -21
}