The GridSnap Test application.

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

 

namespace TestGridSnap

{

  /// <summary>

  /// Summary description for Form1.

  /// </summary>

  public class Form1 : System.Windows.Forms.Form

  {

    private WellFormed.GridSnap gridSnap1;

    /// <summary>

    /// Required designer variable.

    /// </summary>

    private System.ComponentModel.Container components = null;

 

    public Form1()

    {

      //

      // Required for Windows Form Designer support

      //

      InitializeComponent();

 

      //

      // TODO: Add any constructor code after InitializeComponent call

      //

    }

 

    /// <summary>

    /// Clean up any resources being used.

    /// </summary>

    protected override void Dispose( bool disposing )

    {

      if( disposing )

      {

        if (components != null)

        {

          components.Dispose();

        }

      }

      base.Dispose( disposing );

    }

 

    #region Windows Form Designer generated code

    /// <summary>

    /// Required method for Designer support - do not modify

    /// the contents of this method with the code editor.

    /// </summary>

    private void InitializeComponent()

    {

      this.gridSnap1 = new WellFormed.GridSnap();

      this.SuspendLayout();

      //

      // gridSnap1

      //

      this.gridSnap1.Dock = System.Windows.Forms.DockStyle.Fill;

      this.gridSnap1.Location = new System.Drawing.Point(0, 0);

      this.gridSnap1.Name = "gridSnap1";

      this.gridSnap1.Size = new System.Drawing.Size(292, 273);

      this.gridSnap1.Snap = true;

      this.gridSnap1.SnapX = 32;

      this.gridSnap1.SnapY = 32;

      this.gridSnap1.TabIndex = 0;

      this.gridSnap1.Text = "gridSnap1";

      this.gridSnap1.Click += new System.EventHandler(this.gridSnap1_Click);

      this.gridSnap1.Paint += new System.Windows.Forms.PaintEventHandler(this.gridSnap1_Paint);

      this.gridSnap1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.gridSnap1_MouseMove);

      //

      // Form1

      //

      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

      this.ClientSize = new System.Drawing.Size(292, 273);

      this.Controls.Add(this.gridSnap1);

      this.Name = "Form1";

      this.Text = "Form1";

      this.ResumeLayout(false);

 

    }

    #endregion

 

    /// <summary>

    /// The main entry point for the application.

    /// </summary>

    [STAThread]

    static void Main()

    {

      Application.Run(new Form1());

    }

 

    ArrayList points=new ArrayList();

 

    private void gridSnap1_Click(object sender, System.EventArgs e)

    {

      points.Add(pos);

      this.gridSnap1.Invalidate();

    }

 

    private void gridSnap1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)

    {

      foreach(Point p in points)

      {

        e.Graphics.FillEllipse(Brushes.Red, p.X-2,p.Y-2,4,4);

      }

 

      e.Graphics.DrawEllipse(Pens.Teal,pos.X-5,pos.Y-5,10,10);

    }

 

    Point pos;

 

    private void gridSnap1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)

    {

      pos=new Point(e.X,e.Y);

      this.gridSnap1.Invalidate();

    }

  }

}