求C#截图代码

[FXL629]

希望求得C#截图代码，希望哪位大虾能指点！！如果能指导在下那是最好~~呵呵~~

[我在深圳搬砖-Justin]

http://topic.csdn.net/u/20090911/14/5614a16e-ab08-4106-901e-e8dcc5cd1fa3.html

[wushaokai]

Bitmap pic = new Bitmap(width,height);
Graphics g = Graphics.FromImage(pic);
g.CopyFromScreen(new Point(rect.left, rect.top), new Point(0, 0), new Size(width, height));
这是截全屏的图，看一下Graphics方法CopyFromScreen方法就知道了

[wuyq11]

Rectangle R = System.Windows.Forms.Screen.PrimaryScreen.Bounds;
Image img = new Bitmap(R.Width, R.Height);
Graphics G = Graphics.FromImage(img);
G.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(R.Width, R.Height));。
IntPtr dc = G.GetHdc();
G.ReleaseHdc(dc);
G.Dispose();
img .Save("c:\\a.jpg");
或
private static extern bool BitBlt(IntPtr hdcDest,int nXDest,int nYDest,int nWidth,int nHeight,IntPtr hdcSrc,int nXSrc,int nYSrc,Int32 dwrop);

http://topic.csdn.net/u/20090911/14/5614a16e-ab08-4106-901e-e8dcc5cd1fa3.html

[fengling2001]

网络上多得是，自己搜索下，有很多写成类，自己调用就可以

[懦芞]

前段时间有人发这个的源码。
http://topic.csdn.net/u/20090911/14/5614a16e-ab08-4106-901e-e8dcc5cd1fa3.html

[懦芞]

3楼的和我说的是一个地址。

[wei840120]

同问啊

[fengling2001]

	/// <summary>
	/// Provides functions to capture the entire screen, or a particular window, and save it to a file.
	/// </summary>
	public class ScreenCapture
	{
        /// <summary>
        /// Creates an Image object containing a screen shot of the entire desktop
        /// </summary>
        /// <returns></returns>
        public Image CaptureScreen() 
        {
            return CaptureWindow( User32.GetDesktopWindow() );
        }

        /// <summary>
        /// Creates an Image object containing a screen shot of a specific window
        /// </summary>
        /// <param name="handle">The handle to the window. (In windows forms, this is obtained by the Handle property)</param>
        /// <returns></returns>
        public Image CaptureWindow(IntPtr handle)
        {
            // get the hDC of the target window
            IntPtr hdcSrc = User32.GetWindowDC(handle);
            // get the size
            User32.RECT windowRect = new User32.RECT();
            User32.GetWindowRect(handle,ref windowRect);
            int width = windowRect.right - windowRect.left;
            int height = windowRect.bottom - windowRect.top;
            // create a device context we can copy to
            IntPtr hdcDest = GDI32.CreateCompatibleDC(hdcSrc);
            // create a bitmap we can copy it to,
            // using GetDeviceCaps to get the width/height
            IntPtr hBitmap = GDI32.CreateCompatibleBitmap(hdcSrc,width,height); 
            // select the bitmap object
            IntPtr hOld = GDI32.SelectObject(hdcDest,hBitmap);
            // bitblt over
            GDI32.BitBlt(hdcDest,0,0,width,height,hdcSrc,0,0,GDI32.SRCCOPY);
            // restore selection
            GDI32.SelectObject(hdcDest,hOld);
            // clean up 
            GDI32.DeleteDC(hdcDest);
            User32.ReleaseDC(handle,hdcSrc);

            // get a .NET image object for it
            Image img = Image.FromHbitmap(hBitmap);
            // free up the Bitmap object
            GDI32.DeleteObject(hBitmap);

            return img;
        }

        /// <summary>
        /// Captures a screen shot of a specific window, and saves it to a file
        /// </summary>
        /// <param name="handle"></param>
        /// <param name="filename"></param>
        /// <param name="format"></param>
        public void CaptureWindowToFile(IntPtr handle, string filename, ImageFormat format) 
        {
            Image img = CaptureWindow(handle);
            img.Save(filename,format);
        }

        /// <summary>
        /// Captures a screen shot of the entire desktop, and saves it to a file
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="format"></param>
        public void CaptureScreenToFile(string filename, ImageFormat format) 
        {
            Image img = CaptureScreen();
            img.Save(filename,format);
        }
       
        /// <summary>
        /// Helper class containing Gdi32 API functions
        /// </summary>
        private class GDI32
        {          
            public const int SRCCOPY = 0x00CC0020; // BitBlt dwRop parameter

            [DllImport("gdi32.dll")]
            public static extern bool BitBlt(IntPtr hObject,int nXDest,int nYDest,
                int nWidth,int nHeight,IntPtr hObjectSource,
                int nXSrc,int nYSrc,int dwRop);
            [DllImport("gdi32.dll")]
            public static extern IntPtr CreateCompatibleBitmap(IntPtr hDC,int nWidth, 
                int nHeight);
            [DllImport("gdi32.dll")]
            public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
            [DllImport("gdi32.dll")]
            public static extern bool DeleteDC(IntPtr hDC);
            [DllImport("gdi32.dll")]
            public static extern bool DeleteObject(IntPtr hObject);
            [DllImport("gdi32.dll")]
            public static extern IntPtr SelectObject(IntPtr hDC,IntPtr hObject);
        }
 
        /// <summary>
        /// Helper class containing User32 API functions
        /// </summary>
        private class User32
        {
            [StructLayout(LayoutKind.Sequential)]
            public struct RECT
            {
                public int left;
                public int top;
                public int right;
                public int bottom;
            }

            [DllImport("user32.dll")]
            public static extern IntPtr GetDesktopWindow();
            [DllImport("user32.dll")]
            public static extern IntPtr GetWindowDC(IntPtr hWnd);
            [DllImport("user32.dll")]
            public static extern IntPtr ReleaseDC(IntPtr hWnd,IntPtr hDC);
            [DllImport("user32.dll")]
            public static extern IntPtr GetWindowRect(IntPtr hWnd,ref RECT rect);
        }
	}

[FXL629]

有没有说的详细点的 我是菜鸟~~

[nick1yong]

good