using System;
using System.Drawing;
using System.Windows.Forms;
class MouseConnect: Form
{
const int iMaxPoints = 1000;
int iNumPoints = 0;
Point[] apoint = new Point[iMaxPoints];
public static void Main()
{
Application.Run(new MouseConnect());
}
public MouseConnect()
{
}
protected override void OnMouseDown(MouseEventArgs mea)
{
if (mea.Button == MouseButtons.Left)
{
iNumPoints = 0;
Invalidate();
}
}
protected override void OnMouseMove(MouseEventArgs mea)
{
if (mea.Button == MouseButtons.Left)
{
apoint[iNumPoints++] = new Point(mea.X, mea.Y);
Graphics grfx = CreateGraphics();
grfx.DrawLine(new Pen(ForeColor), mea.X, mea.Y,
mea.X, mea.Y + 1);
grfx.Dispose();
}
}
protected override void OnMouseUp(MouseEventArgs mea)
{
if (mea.Button == MouseButtons.Left)
Invalidate();
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Pen pen = new Pen(ForeColor);
for (int i = 0 ; i < iNumPoints - 1; i++)
for (int j = i + 1; j < iNumPoints; j++)
grfx.DrawLine(pen, apoint[i], apoint[j]);
}
}