Alsing.Windows.Forms.CoreLib.SplitViewControl.Horizontal_MouseDown C# (CSharp) Метод

        private void Horizontal_MouseDown(object sender, MouseEventArgs e)
        {
            Action = SizeAction.SizeH;
            StartPos = new Point(e.X, e.Y);
            Horizontal.BringToFront();
            Horizontal.BackColor = SystemColors.ControlDark;
            FirstTime = true;
        }