/// <summary>
/// 鼠标抬起，结束截图
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Cutter_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
if (Is_CatchStart)
{
Is_CatchStart = false;
if (CatchRectangle.Width == 0 || CatchRectangle.Height == 0)
{
return;
}
Bitmap CatchedBmp = new Bitmap(CatchRectangle.Width, CatchRectangle.Height);
Graphics g = Graphics.FromImage(CatchedBmp);
// 把originBmp中指定部分按照指定大小画到空白图片上
// CatchRectangle指定originBmp中指定部分
// 第二个参数指定绘制到空白图片的位置和大小
// 画完后CatchedBmp不再是空白图片了，而是具有与截取的图片一样的内容
g.DrawImage(WinBmp, new Rectangle(0, 0, CatchRectangle.Width, CatchRectangle.Height), CatchRectangle, GraphicsUnit.Pixel);
// 将图片保存到剪切板中
Clipboard.Clear();
Clipboard.SetImage(CatchedBmp);
g.Dispose();
retBitmap = CatchedBmp;
WinBmp.Dispose();
CatchedBmp.Dispose();
this.CanRead = true;
this.Close();
}
}
}
