Drag and draw
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
bool shouldPaint = false;
public Form1() {
InitializeComponent();
}
private void PainterForm_MouseDown( object sender, MouseEventArgs e )
{
shouldPaint = true;
}
private void PainterForm_MouseUp( object sender, MouseEventArgs e )
{
shouldPaint = false;
}
private void PainterForm_MouseMove( object sender, MouseEventArgs e )
{
if ( shouldPaint )
{
Graphics graphics = CreateGraphics();
graphics.FillEllipse(new SolidBrush( Color.BlueViolet ), e.X, e.Y, 4, 4 );
graphics.Dispose();
}
}
private void InitializeComponent()
{
this.SuspendLayout();
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(184, 180);
this.Name = "PainterForm";
this.Text = "Painter";
this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.PainterForm_MouseDown);
this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.PainterForm_MouseUp);
this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.PainterForm_MouseMove);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
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