private void FreeResources()//资源销毁还原
{
this.isAreaSelected = false;
this.Screenshots.Dispose();
this.Screenshots_Grey.Dispose();
this.RectangleSelected = null;
GC.Collect();
}
private void Main_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
GC.Collect();
isAreaSelected = false;
PointStart = e.Location;
PointEnd = new Point(PointStart.X + 1, PointStart.Y + 1);//至少1个像素
RectangleSelected = new RectangleSelector(PointStart, PointEnd);
}
}