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linia control cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using Punct;

namespace Linia
{
    public class xyLinia : Control
    {
        private int x = 0;
        private int y = 0;
        private int x1 = 5;
        private int y1 = 5;
        private int x2 = 5;
        private int y2 = 20;
        Punct.xyPoint Point1 = new Punct.xyPoint();
        Punct.xyPoint Point2 = new Punct.xyPoint();
        private int startDrag = 0;

        protected override void OnMouseDown(MouseEventArgs e)
        {
            x = e.X;
            y = e.Y;
            startDrag = 1;
        }
        protected override void OnMouseUp(MouseEventArgs e)
        {
            base.OnMouseUp(e);
            startDrag = 0;
        }
        protected override void OnMouseMove(MouseEventArgs e)
        {
            if (startDrag == 1)
            {
                base.OnMouseMove(e);
                Left = (Left + e.X) - x;
                Top = (Top + e.Y) - y;
            }
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            Controls.Add(Point1);
            Controls.Add(Point2);
            Point1.SetPosX(x1);
            Point1.SetPosY(y1);
            Point2.SetPosX(x2);
            Point2.SetPosY(y2);

            Width = 20;
            Height = 80;
            Controls.Add(Point1);
            Controls.Add(Point2);
                    }
        public xyLinia()
        {
            
            Controls.Add(Point1);
            Controls.Add(Point2);
            Point1.SetPosX(x1);
            Point1.SetPosY(y1);
            Point2.SetPosX(x2);
            Point2.SetPosY(y2);
            Width = 20;
            Height = 80;
            Controls.Add(Point1);
            Controls.Add(Point2);

        }
    }
}

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