Select your preferred language

The DialogTransEditor listing

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

namespace TypeEditorsCS

{

public class DialogTransEditor : System.Windows.Forms.Form

{

int _transparency;

public int Transparency

{

get{return _transparency;}

set

{

_transparency=value;

this.trackBar1.Value=255-value;

this.label1.Text=((255-value)*100/255).ToString("0.0")+"%";

}

private System.Windows.Forms.TrackBar trackBar1;

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Button button1;

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.Container components = null;

public DialogTransEditor()

{

// Required for Windows Form Designer support

InitializeComponent();

this.SetStyle(ControlStyles.AllPaintingInWmPaint |

ControlStyles.DoubleBuffer |

ControlStyles.UserPaint,true);

}

/// <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.trackBar1 = new System.Windows.Forms.TrackBar();

this.label1 = new System.Windows.Forms.Label();

this.button1 = new System.Windows.Forms.Button();

((System.ComponentModel.ISupportInitialize)(this.trackBar1)).BeginInit();

this.SuspendLayout();

// trackBar1

this.trackBar1.Location = new System.Drawing.Point(0, 16);

this.trackBar1.Maximum = 255;

this.trackBar1.Name = "trackBar1";

this.trackBar1.Orientation = System.Windows.Forms.Orientation.Vertical;

this.trackBar1.Size = new System.Drawing.Size(45, 232);

this.trackBar1.TabIndex = 0;

this.trackBar1.TickFrequency = 8;

this.trackBar1.Scroll += new System.EventHandler(this.trackBar1_Scroll);

// label1

this.label1.Font = new System.Drawing.Font("Tahoma", 24F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));

this.label1.Location = new System.Drawing.Point(48, 8);

this.label1.Name = "label1";

this.label1.Size = new System.Drawing.Size(136, 48);

this.label1.TabIndex = 1;

// button1

this.button1.DialogResult = System.Windows.Forms.DialogResult.OK;

this.button1.Location = new System.Drawing.Point(208, 16);

this.button1.Name = "button1";

this.button1.TabIndex = 2;

this.button1.Text = "Ok";

// DialogTransEditor

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

this.ClientSize = new System.Drawing.Size(292, 266);

this.Controls.Add(this.button1);

this.Controls.Add(this.label1);

this.Controls.Add(this.trackBar1);

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;

this.Name = "DialogTransEditor";

this.Text = "Edit Transparency";

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

((System.ComponentModel.ISupportInitialize)(this.trackBar1)).EndInit();

this.ResumeLayout(false);

}

#endregion

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

{

e.Graphics.FillRectangle(Brushes.Black,64,96,192,100);

SolidBrush sb=new SolidBrush(Color.FromArgb(_transparency,Color.Red));

e.Graphics.FillRectangle(sb,168,64,88,168);

sb.Dispose();

}

private void trackBar1_Scroll(object sender, System.EventArgs e)

{

float pc=((float)this.trackBar1.Value)/255*100f;

this.label1.Text=pc.ToString("0.0")+"%";

this._transparency=255-this.trackBar1.Value;

this.Invalidate();

}

Return to the article.