93 lines
3.5 KiB
C#
93 lines
3.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Windows.Forms;
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namespace ITC81DB
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{
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public static class IntechGraphics
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{
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public enum TernaryRasterOperations : uint
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{
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/// <summary>dest = source</summary>
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SRCCOPY = 0x00CC0020,
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/// <summary>dest = source OR dest</summary>
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SRCPAINT = 0x00EE0086,
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/// <summary>dest = source AND dest</summary>
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SRCAND = 0x008800C6,
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/// <summary>dest = source XOR dest</summary>
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SRCINVERT = 0x00660046,
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/// <summary>dest = source AND (NOT dest)</summary>
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SRCERASE = 0x00440328,
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/// <summary>dest = (NOT source)</summary>
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NOTSRCCOPY = 0x00330008,
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/// <summary>dest = (NOT src) AND (NOT dest)</summary>
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NOTSRCERASE = 0x001100A6,
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/// <summary>dest = (source AND pattern)</summary>
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MERGECOPY = 0x00C000CA,
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/// <summary>dest = (NOT source) OR dest</summary>
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MERGEPAINT = 0x00BB0226,
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/// <summary>dest = pattern</summary>
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PATCOPY = 0x00F00021,
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/// <summary>dest = DPSnoo</summary>
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PATPAINT = 0x00FB0A09,
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/// <summary>dest = pattern XOR dest</summary>
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PATINVERT = 0x005A0049,
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/// <summary>dest = (NOT dest)</summary>
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DSTINVERT = 0x00550009,
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/// <summary>dest = BLACK</summary>
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BLACKNESS = 0x00000042,
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/// <summary>dest = WHITE</summary>
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WHITENESS = 0x00FF0062
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}
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[DllImport("Coredll.dll")]
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private static extern IntPtr GetDC(IntPtr hWnd);
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[DllImport("Coredll.dll")]
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private static extern IntPtr CreateCompatibleDC(IntPtr hdc);
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[DllImport("coredll.dll")]
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private static extern IntPtr CreateCompatibleBitmap(IntPtr hdc, int nWidth, int nHeight);
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[DllImport("coredll.dll")]
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private static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
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[DllImport("coredll.dll")]
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private static extern int BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, uint dwRop);
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[DllImport("coredll.dll")]
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private static extern int DeleteDC(IntPtr hdc);
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[DllImport("coredll.dll")]
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private static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDC);
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[DllImport("coredll.dll")]
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private static extern IntPtr DeleteObject(IntPtr hObject);
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public static Bitmap CopyFromScreen()
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{
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int width = Screen.PrimaryScreen.Bounds.Width;
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int height = Screen.PrimaryScreen.Bounds.Height;
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IntPtr hBitmap;
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IntPtr hDC = GetDC(IntPtr.Zero);
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IntPtr hMemDC = CreateCompatibleDC(hDC);
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hBitmap = CreateCompatibleBitmap(hDC, width, height);
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if (hBitmap != IntPtr.Zero)
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{
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IntPtr hOld = (IntPtr)SelectObject(hMemDC, hBitmap);
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BitBlt(hMemDC, 0, 0, width, height, hDC, 0, 0, (uint)TernaryRasterOperations.SRCCOPY);
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SelectObject(hMemDC, hOld);
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DeleteDC(hMemDC);
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ReleaseDC(IntPtr.Zero, hDC);
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Bitmap bmp = System.Drawing.Image.FromHbitmap(hBitmap);
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DeleteObject(hBitmap);
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return bmp;
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}
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return null;
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}
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}
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}
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