CopyFromScreen截屏
传统截屏
#region 导入函数
[DllImport("gdi32.dll")]
private static extern IntPtr CreateDC(string lpszDriver, string lpszDrivse, string lpszOutput, Int32 lpInitData);
[DllImport("gdi32.dll")]
private static extern IntPtr CreateCompatibleDC(IntPtr hdc);
[DllImport("gdi32.dll")]
private static extern int GetDeviceCaps(IntPtr hdc, Int32 nIndex);
[DllImport("gdi32.dll")]
private static extern IntPtr CreateCompatibleBitmap(IntPtr hdc, int nWidth, int nHeight);
[DllImport("gdi32.dll")]
private static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);
[DllImport("gdi32.dll")]
private static extern int BitBlt(IntPtr hdcDest, int nXDest, int nYDest,
int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, UInt32 dwRop);
[DllImport("gdi32.dll")]
private static extern int DeleteDC(IntPtr hdc);
#endregion
现在截屏简单多了
Console.WriteLine(DateTime.Now.Millisecond.ToString());
System.Drawing.Bitmap photo = new System.Drawing.Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
System.Drawing.Graphics graphic = System.Drawing.Graphics.FromImage(photo);
graphic.CopyFromScreen(0, 0, 0, 0, new System.Drawing.Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height));
photo.Save(@”r:\aa.jpg”, System.Drawing.Imaging.ImageFormat.Jpeg);
Console.WriteLine(DateTime.Now.Millisecond.ToString());
CopyFromScreen 方法对于将一个图像放置于另一个图像顶部非常有用。若要指定源颜色和目标颜色的混合方式，请使用 CopyFromScreen 方法之一，该方法采用 CopyPixelOperation 参数。
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