private void DrawScreenRect(Screen s)
{
System.IntPtr DesktopHandle = Win32Api.GetDC(System.IntPtr.Zero);
Rectangle captureRectangle = new Rectangle(new Point(1, 1), new Size(s.Bounds.Width - 1, s.Bounds.Height - 1));
//Bitmap bitmap = new Bitmap(s.Bounds.Size.Width, s.Bounds.Size.Height);
Graphics g = Graphics.FromHdc(DesktopHandle);
Pen pen = new Pen(Color.Yellow, 5);
g.DrawRectangle(pen, captureRectangle);
//SolidBrush sb = new SolidBrush(Color.FromArgb(60, 255, 255, 255));
//Rectangle NewRec = new Rectangle(s.Bounds.Location.X+1,s.Bounds.Y+1,s.Bounds.Width-3,s.Bounds.Height-3);
//g.FillRectangle(sb, NewRec);
g.Dispose();
}
private void mh_MouseMoveEvent(object sender, MouseEventArgs e)
{
this.label1.Location = new Point(e.X + 10, e.Y - 10);
this.label1.Text = "Position：" + e.X + "," + e.Y;
this.label1.Visible = true;
if (CatchStart)
{
this.timer1.Enabled = false;
//Bitmap destBmp = (Bitmap)originBmp.Clone();
Point newPoint = new Point(DownPoint.X, DownPoint.Y);
Point p2 = new Point(e.X, e.Y);
Bitmap destBmp = CapRect(DownPoint, p2);
if (destBmp == null)
{
return;
}
//Bitmap destBmp = CapActvieScreen();
//Bitmap destBmp = new Bitmap(GetMouseScreen().Bounds.Width, GetMouseScreen().Bounds.Height);
System.IntPtr DesktopHandle = Win32Api.GetDC(System.IntPtr.Zero);
Graphics g = Graphics.FromHdc(DesktopHandle);
destBmp.Save(@"d:\destbmp.png");
Pen pen = new Pen(Color.Blue, 4);
//Brush brush = new Brush(Color.LightGray,);
int width = Math.Abs(e.X - DownPoint.X);
int height = Math.Abs(e.Y - DownPoint.Y);
//判断矩形的起始坐标
if (e.X < DownPoint.X)
{
newPoint.X = e.X;
}
if (e.Y < DownPoint.Y)
{
newPoint.Y = e.Y;
}
//保存矩形
CatchRect = new Rectangle(DownPoint, new Size(width, height));
//this.Opacity = 0;
//将矩形画在这个画板上
g.DrawRectangle(pen, CatchRect);
//释放这个画板
g.Dispose();
//重新创建一个Graphics类
Graphics g1 = this.CreateGraphics();
//如果之前那个画板不释放，而直接g = this.CreateGraphics()这样的话无法释放掉第一次创建的g,因为只是把地址转到新的g了，如同string一样。
//将刚才所画的图片画到这个窗体上
g1.DrawRectangle(pen, CatchRect);
Clipboard.SetData(DataFormats.Bitmap, destBmp);
destBmp.Save(@"d:\destbmp.png");
//这个也可以属于二次缓冲技术，如果直接将矩形画在窗体上，会造成图片抖动并且会有无数个矩形
//释放这个画板
g1.Dispose();
////释放掉Bmp对象。 k
destBmp.Dispose();
}
}