using System;
using System.Drawing;
using System.ComponentModel;
using System.Windows.Forms;
public class Painter : System.Windows.Forms.Form
{
bool shouldPaint = false;
public Painter()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(400, 400);
this.MouseDown +=new System.Windows.Forms.MouseEventHandler(this.Painter_MouseDown );
this.MouseUp +=new System.Windows.Forms.MouseEventHandler(this.Painter_MouseUp );
this.MouseMove +=new System.Windows.Forms.MouseEventHandler(this.Painter_MouseMove );
}
[STAThread]
static void Main()
{
Application.Run( new Painter() );
}
private void Painter_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e )
{
shouldPaint = true;
}
private void Painter_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e )
{
shouldPaint = false;
}
protected void Painter_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e )
{
if ( shouldPaint )
{
Graphics graphics = CreateGraphics();
graphics.FillEllipse(new SolidBrush( Color.Black ),e.X, e.Y, 10, 10 );
}
}
}