之后是窗体的鼠标函数了，里面很多代码都没有作出整理，看了一下，整理后的代码应该会更少更精简的
private void ScreenBody_DoubleClick(object sender， EventArgs e)
{
if (((MouseEventArgs)e).Button == MouseButtons.Left &&Rect.Contains(((MouseEventArgs)e).X， ((MouseEventArgs)e).Y))
{
//保存的时候有很多种方法的......我这里只用了这种
Image memory = new Bitmap(Rect.Width， Rect.Height);
Graphics g = Graphics.FromImage(memory);
g.CopyFromScreen(Rect.X + 1， Rect.Y + 1， 0， 0， Rect.Size);
Clipboard.SetImage(memory);
this.Close();
}
}
private void ScreenBody_MouseDown(object sender， MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
isDowned = true;
if (RectReady == false)
{
Rect.X = e.X;
Rect.Y = e.Y;
downPoint = new Point(e.X， e.Y);
}
if (RectReady == true)
{
tmpx = e.X;
tmpy = e.Y;
}
}
if (e.Button == MouseButtons.Right)
{
if (RectReady != true)
{
this.Close();
return;
}
MainPainter.DrawImage(baseImage， 0， 0);
RectReady = false;
}
}
private void ScreenBody_MouseUp(object sender， MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
isDowned = false;
RectReady = true;
}
}
private void ScreenBody_MouseMove(object sender， MouseEventArgs e)
{
if (RectReady == false)
{
if (isDowned == true)
{
Image New = DrawScreen((Image)baseImage.Clone()， e.X， e.Y);
MainPainter.DrawImage(New， 0， 0);
New.Dispose();
}
}
if (RectReady == true)
{
if (Rect.Contains(e.X， e.Y))
{
//this.Cursor = Cursors.Hand;
if (isDowned == true)
{
//和上一次的位置比较获取偏移量
Rect.X = Rect.X + e.X - tmpx;
Rect.Y = Rect.Y + e.Y - tmpy;
//记录现在的位置
tmpx = e.X;
tmpy = e.Y;
MoveRect((Image)baseImage.Clone()， Rect);
}
}
}
}
private void ScreenBody_Load(object sender， EventArgs e)
{
this.WindowState = FormWindowState.Maximized;
MainPainter = this.CreateGraphics();
pen = new Pen(Brushes.Blue);
isDowned = false;
baseImage = this.BackgroundImage;
Rect = new Rectangle();
RectReady = false;
}