这些纯粹学习代码没啥实际用处
bitmap快速复制数据的方法,比setPixel快
static void void Main(string[] args) { //截屏代码 Rectangle rec = Screen.PrimaryScreen.Bounds; Bitmap img = new Bitmap(rec.Width, rec.Height); Graphics gph = Graphics.FromImage(img); gph.CopyFromScreen(new Point(0, 0), new Point(0, 0), rec.Size); //将bitmap锁定到系统内存中 System.Drawing.Imaging.BitmapData bmpData = img.LockBits(rec, System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format16bppRgb555); // 获取起始行的地址. IntPtr ptr = bmpData.Scan0; // 定义一个数组用来保存bitmap的数据. int bytes = bmpData.Stride * img.Height; byte[] rgbValues = new byte[bytes]; // 把rgb值拷贝到数组中 System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, bytes); img.UnlockBits(bmpData); //将数据拷到另一个bitmap中 Bitmap img2 = new Bitmap(rec.Width, rec.Height); Graphics gph2 = Graphics.FromImage(img2); System.Drawing.Imaging.BitmapData bmpData2 = img2.LockBits(rec, System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format16bppRgb555); IntPtr ptr2 = bmpData2.Scan0; System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr2, bytes); img2.UnlockBits(bmpData2); img2.Save("asd.jpg", System.Drawing.Imaging.ImageFormat.Jpeg); }