■ PrintWindow API 함수를 사용해 윈도우 비트맵을 구하는 방법을 보여준다.
▶ ShowWindowCommand.cs
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namespace TestProject { /// <summary> /// 윈도우 명령 표시 /// </summary> public enum ShowWindowCommand : int { /// <summary> /// SW_HIDE /// </summary> SW_HIDE = 0, /// <summary> /// SW_SHOWNORMAL /// </summary> SW_SHOWNORMAL = 1, /// <summary> /// SW_SHOWMINIMIZED /// </summary> SW_SHOWMINIMIZED = 2, /// <summary> /// SW_MAXIMIZE /// </summary> SW_MAXIMIZE = 3, /// <summary> /// SW_SHOWMAXIMIZED /// </summary> SW_SHOWMAXIMIZED = 3, /// <summary> /// SW_SHOWNOACTIVATE /// </summary> SW_SHOWNOACTIVATE = 4, /// <summary> /// SW_SHOW /// </summary> SW_SHOW = 5, /// <summary> /// SW_MINIMIZE /// </summary> SW_MINIMIZE = 6, /// <summary> /// SW_SHOWMINNOACTIVE /// </summary> SW_SHOWMINNOACTIVE = 7, /// <summary> /// SW_SHOWNA /// </summary> SW_SHOWNA = 8, /// <summary> /// SW_RESTORE /// </summary> SW_RESTORE = 9 } } |
▶ POINT.cs
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using System.Drawing; using System.Runtime.InteropServices; namespace TestProject { /// <summary> /// 포인트 /// </summary> [StructLayout(LayoutKind.Sequential)] public struct POINT { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// X /// </summary> public int X; /// <summary> /// Y /// </summary> public int Y; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - POINT(x, y) /// <summary> /// 생성자 /// </summary> /// <param name="x">X 좌표</param> /// <param name="y">Y 좌표</param> public POINT(int x, int y) { X = x; Y = y; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region Point 타입 암시적 변환하기 - Point(point) /// <summary> /// Point 타입 암시적 변환하기 /// </summary> /// <param name="point">포인트</param> public static implicit operator Point(POINT point) { return new Point(point.X, point.Y); } #endregion #region POINT 타입 암시적 변환하기 - POINT(point) /// <summary> /// POINT 타입 암시적 변환하기 /// </summary> /// <param name="point">포인트</param> public static implicit operator POINT(Point point) { return new POINT(point.X, point.Y); } #endregion } } |
▶ RECT.cs
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using System.Runtime.InteropServices; namespace TestProject { /// <summary> /// 사각형 /// </summary> [StructLayout(LayoutKind.Sequential)] public struct RECT { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 왼쪽 /// </summary> public int Left; /// <summary> /// 위쪽 /// </summary> public int Top; /// <summary> /// 오른쪽 /// </summary> public int Right; /// <summary> /// 아래쪽 /// </summary> public int Bottom; #endregion } } |
▶ WINDOWPLACEMENT.cs
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using System; using System.Runtime.InteropServices; namespace TestProject { /// <summary> /// 윈도우 배치 /// </summary> [Serializable] [StructLayout(LayoutKind.Sequential)] public struct WINDOWPLACEMENT { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 길이 /// </summary> public int Length; /// <summary> /// 길이 /// </summary> public int Flag; /// <summary> /// 윈도우 명령 표시 여부 /// </summary> public ShowWindowCommand ShowWindowCommand; /// <summary> /// 최소 위치 /// </summary> public POINT MinimumPosition; /// <summary> /// 최대 위치 /// </summary> public POINT MaximumPosition; /// <summary> /// 일반 사각형 /// </summary> public RECT NormalRectangle; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 디폴트 - Default /// <summary> /// 디폴트 /// </summary> public static WINDOWPLACEMENT Default { get { WINDOWPLACEMENT windowPlacement = new WINDOWPLACEMENT(); windowPlacement.Length = Marshal.SizeOf(windowPlacement); return windowPlacement; } } #endregion } } |
▶ MainForm.cs
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using System; using System.Drawing; using System.Runtime.InteropServices; using System.Threading; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Import ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 전경 윈도우 구하기 - GetForegroundWindow() /// <summary> /// 전경 윈도우 구하기 /// </summary> /// <returns>윈도우 핸들</returns> [DllImport("user32")] private static extern IntPtr GetForegroundWindow(); #endregion #region 윈도우 배치 구하기 - GetWindowPlacement(windowHandle, windowPlacement) /// <summary> /// 윈도우 배치 구하기 /// </summary> /// <param name="windowHandle">윈도우 핸들</param> /// <param name="windowPlacement">윈도우 배치</param> /// <returns>처리 결과</returns> [DllImport("user32", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool GetWindowPlacement(IntPtr windowHandle, out WINDOWPLACEMENT windowPlacement); #endregion #region 윈도우 인쇄하기 - PrintWindow(windowHandle, deviceContexthandle, flag) /// <summary> /// 윈도우 인쇄하기 /// </summary> /// <param name="windowHandle">윈도우 핸들</param> /// <param name="deviceContexthandle">디바이스 컨텍스트 핸들</param> /// <param name="flag">플래그</param> /// <returns>처리 결과</returns> [DllImport("user32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool PrintWindow(IntPtr windowHandle, IntPtr deviceContexthandle, uint flag); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.executeButton.Click += executeButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 실행 버튼 클릭시 처리하기 - executeButton_Click(sender, e) /// <summary> /// 실행 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void executeButton_Click(object sender, EventArgs e) { Thread.Sleep(5000); IntPtr windowHandle = GetForegroundWindow(); this.pictureBox.Image = GetWindowBitmap(windowHandle); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 윈도우 비트맵 구하기 - GetBitmap(windowHandle) /// <summary> /// 윈도우 비트맵 구하기 /// </summary> /// <param name="windowHandle">윈도우 핸들</param> /// <returns>윈도우 비트맵</returns> private Bitmap GetWindowBitmap(IntPtr windowHandle) { WINDOWPLACEMENT windowPlacement; GetWindowPlacement(windowHandle, out windowPlacement); int windowWidth = windowPlacement.NormalRectangle.Right - windowPlacement.NormalRectangle.Left + 1; int windowHeight = windowPlacement.NormalRectangle.Bottom - windowPlacement.NormalRectangle.Top + 1; Bitmap bitmap = new Bitmap(windowWidth, windowHeight); using(Graphics bitmapGraphics = Graphics.FromImage(bitmap)) { IntPtr deviceContextHandle = bitmapGraphics.GetHdc(); PrintWindow(windowHandle, deviceContextHandle, 0); bitmapGraphics.ReleaseHdc(deviceContextHandle); return bitmap; } } #endregion } } |
