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copied!<p>You can code something pretty simple that will hook the PrintScreen and save the capture in a file.</p> <p>Here is something to start to capture and save to a file. You will just need to hook the key "Print screen".</p> <pre class="lang-cs prettyprint-override"><code>using System; using System.Drawing; using System.IO; using System.Drawing.Imaging; using System.Runtime.InteropServices; public class CaptureScreen { static public void Main(string[] args) { try { Bitmap capture = CaptureScreen.GetDesktopImage(); string file = Path.Combine(Environment.CurrentDirectory, "screen.gif"); ImageFormat format = ImageFormat.Gif; capture.Save(file, format); } catch (Exception e) { Console.WriteLine(e); } } public static Bitmap GetDesktopImage() { WIN32_API.SIZE size; IntPtr hDC = WIN32_API.GetDC(WIN32_API.GetDesktopWindow()); IntPtr hMemDC = WIN32_API.CreateCompatibleDC(hDC); size.cx = WIN32_API.GetSystemMetrics(WIN32_API.SM_CXSCREEN); size.cy = WIN32_API.GetSystemMetrics(WIN32_API.SM_CYSCREEN); m_HBitmap = WIN32_API.CreateCompatibleBitmap(hDC, size.cx, size.cy); if (m_HBitmap!=IntPtr.Zero) { IntPtr hOld = (IntPtr) WIN32_API.SelectObject(hMemDC, m_HBitmap); WIN32_API.BitBlt(hMemDC, 0, 0,size.cx,size.cy, hDC, 0, 0, WIN32_API.SRCCOPY); WIN32_API.SelectObject(hMemDC, hOld); WIN32_API.DeleteDC(hMemDC); WIN32_API.ReleaseDC(WIN32_API.GetDesktopWindow(), hDC); return System.Drawing.Image.FromHbitmap(m_HBitmap); } return null; } protected static IntPtr m_HBitmap; } public class WIN32_API { public struct SIZE { public int cx; public int cy; } public const int SRCCOPY = 13369376; public const int SM_CXSCREEN=0; public const int SM_CYSCREEN=1; [DllImport("gdi32.dll",EntryPoint="DeleteDC")] public static extern IntPtr DeleteDC(IntPtr hDc); [DllImport("gdi32.dll",EntryPoint="DeleteObject")] public static extern IntPtr DeleteObject(IntPtr hDc); [DllImport("gdi32.dll",EntryPoint="BitBlt")] public static extern bool BitBlt(IntPtr hdcDest,int xDest,int yDest,int wDest,int hDest,IntPtr hdcSource,int xSrc,int ySrc,int RasterOp); [DllImport ("gdi32.dll",EntryPoint="CreateCompatibleBitmap")] public static extern IntPtr CreateCompatibleBitmap(IntPtr hdc, int nWidth, int nHeight); [DllImport ("gdi32.dll",EntryPoint="CreateCompatibleDC")] public static extern IntPtr CreateCompatibleDC(IntPtr hdc); [DllImport ("gdi32.dll",EntryPoint="SelectObject")] public static extern IntPtr SelectObject(IntPtr hdc,IntPtr bmp); [DllImport("user32.dll", EntryPoint="GetDesktopWindow")] public static extern IntPtr GetDesktopWindow(); [DllImport("user32.dll",EntryPoint="GetDC")] public static extern IntPtr GetDC(IntPtr ptr); [DllImport("user32.dll",EntryPoint="GetSystemMetrics")] public static extern int GetSystemMetrics(int abc); [DllImport("user32.dll",EntryPoint="GetWindowDC")] public static extern IntPtr GetWindowDC(Int32 ptr); [DllImport("user32.dll",EntryPoint="ReleaseDC")] public static extern IntPtr ReleaseDC(IntPtr hWnd,IntPtr hDc); } </code></pre> <p><strong>Update</strong> Here is the code to hook the PrintScreen (and other key) from C#:</p> <p><a href="http://forum.cheatengine.org/viewtopic.php?t=192699&sid=d25bb4a9d48a3518bba28ec63d6510a2" rel="nofollow noreferrer">Hook code</a></p>

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