internal class NativeMethods
{
[DllImport("user32.dll")]
public extern static IntPtr GetDesktopWindow();
[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern IntPtr GetWindowDC(IntPtr hwnd);
[System.Runtime.InteropServices.DllImport("gdi32.dll")]
public static extern UInt64 BitBlt
(IntPtr hDestDC,
int x,
int y,
int nWidth,
int nHeight,
IntPtr hSrcDC,
int xSrc,
int ySrc,
System.Int32 dwRop);
}
// Save the screen capture into a jpg
public void SaveScreen()
{
Image myImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height);
Graphics gr1 = Graphics.FromImage(myImage);
IntPtr dc1 = gr1.GetHdc();
IntPtr dc2 = NativeMethods.GetWindowDC(NativeMethods.GetDesktopWindow());
NativeMethods.BitBlt(dc1, 0, 0, Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height, dc2, 0, 0, 13369376);
gr1.ReleaseHdc(dc1);
myImage.Save("screenshot.jpg", ImageFormat.Jpeg);
}
//主要是使用三个ＡＰＩ函数来做的．也是从网上看来的并不是原创．
