using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
namespace 屏幕截图
{
class ImgDesk
{
[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
private static extern bool BitBlt(
IntPtr hdcDest, //目标设备的句柄
int nXDest, // 目标对象的左上角的X坐标
int nYDest, // 目标对象的左上角的X坐标
int nWidth, // 目标对象的矩形的宽度
int nHeight, // 目标对象的矩形的长度
IntPtr hdcSrc, // 源设备的句柄
int nXSrc, // 源对象的左上角的X坐标
int nYSrc, // 源对象的左上角的X坐标
System.Int32 dwRop // 光栅的操作值
);
[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
private static extern IntPtr CreateDC(
string lpszDriver, // 驱动名称
string lpszDevice, // 设备名称
string lpszOutput, // 无用,可以设定位"NULL"
IntPtr lpInitData // 任意的打印机数据
);
public static Bitmap GetImgDesk()
{
//this.Hide();
IntPtr dc1 = CreateDC("DISPLAY", null, null, (IntPtr)null);
//创建显示器的DC
Graphics g1 = Graphics.FromHdc(dc1);
//由一个指定设备的句柄创建一个新的Graphics对象
Bitmap MyImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, g1);
//根据屏幕大小创建一个与之相同大小的Bitmap对象
Graphics g2 = Graphics.FromImage(MyImage);
//获得屏幕的句柄
IntPtr dc3 = g1.GetHdc();
//获得位图的句柄
IntPtr dc2 = g2.GetHdc();
//把当前屏幕捕获到位图对象中
BitBlt(dc2, 0, 0, Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, dc3, 0, 0, 13369376);
//把当前屏幕拷贝到位图中
g1.ReleaseHdc(dc3);
//释放屏幕句柄
g2.ReleaseHdc(dc2);
//释放位图句柄
//pictureBox1.Image = MyImage;
//this.Show();
MemoryStream ms = new MemoryStream();
MyImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
return MyImage;
}
}
}
937658938 发表于 2014-6-18 20:53
表示不会使用有点看不懂。。。。
public Bitmap ScreenShot()
{
//截屏
var totalWidth = Screen.PrimaryScreen.Bounds.Width;
//.AllScreens.Select(p => p.Bounds.Width).Aggregate((a, b) => a + b);//注释的这两句可以一次性截所有屏幕
var totalHeight = Screen.PrimaryScreen.Bounds.Height;
//.AllScreens.Select(p => p.Bounds.Height).Aggregate((a, b) => a + b);
var img = new Bitmap(totalWidth, totalHeight);
var grap = Graphics.FromImage(img);
try
{
//这句就是截图的核心
grap.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(totalWidth, totalHeight));
grap.Dispose();
var snap = img.GetThumbnailImage(1024, 768, () => false, IntPtr.Zero);
using (var ms = new MemoryStream())
{
snap.Save(ms, ImageFormat.Jpeg);
sysInfo.ScreenSnapshot = Convert.ToBase64String(ms.ToArray());
}
img.Dispose();
}
catch (Exception ex)
{
grap.FillRectangle(new SolidBrush(Color.White), 0, 0, totalWidth, totalHeight);
var font = new Font("宋体", 16, (FontStyle.Regular));
var brush = Brushes.Blue;
grap.DrawString(ex.ToString(), font, brush, 2, 2);
using (var ms = new MemoryStream())
{
img.Save(ms, ImageFormat.Jpeg);
sysInfo.ScreenSnapshot = Convert.ToBase64String(ms.ToArray());
}
}
finally
{
img.Dispose();
grap.Dispose();
}
}
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