Transparent Forms


   

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald

Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace TransparentForms
{
    /// <summary>
    /// Summary description for Form2.
    /// </summary>
    public class Transparent : System.Windows.Forms.Form
    {
        internal System.Windows.Forms.GroupBox GroupBox1;
        internal System.Windows.Forms.Button cmdApply;
        internal System.Windows.Forms.NumericUpDown udOpacity;
        internal System.Windows.Forms.Label Label1;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Transparent()
        {
            //
            // 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.GroupBox1 = new System.Windows.Forms.GroupBox();
            this.cmdApply = new System.Windows.Forms.Button();
            this.udOpacity = new System.Windows.Forms.NumericUpDown();
            this.Label1 = new System.Windows.Forms.Label();
            this.GroupBox1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.udOpacity)).BeginInit();
            this.SuspendLayout();
            // 
            // GroupBox1
            // 
            this.GroupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                                    this.cmdApply,
                                                                                    this.udOpacity,
                                                                                    this.Label1});
            this.GroupBox1.Location = new System.Drawing.Point(12, 75);
            this.GroupBox1.Name = "GroupBox1";
            this.GroupBox1.Size = new System.Drawing.Size(268, 116);
            this.GroupBox1.TabIndex = 4;
            this.GroupBox1.TabStop = false;
            // 
            // cmdApply
            // 
            this.cmdApply.Location = new System.Drawing.Point(172, 64);
            this.cmdApply.Name = "cmdApply";
            this.cmdApply.Size = new System.Drawing.Size(80, 24);
            this.cmdApply.TabIndex = 5;
            this.cmdApply.Text = "Apply";
            this.cmdApply.Click += new System.EventHandler(this.cmdApply_Click);
            // 
            // udOpacity
            // 
            this.udOpacity.Increment = new System.Decimal(new int[] {
                                                                        5,
                                                                        0,
                                                                        0,
                                                                        0});
            this.udOpacity.Location = new System.Drawing.Point(88, 32);
            this.udOpacity.Name = "udOpacity";
            this.udOpacity.Size = new System.Drawing.Size(48, 21);
            this.udOpacity.TabIndex = 4;
            this.udOpacity.Value = new System.Decimal(new int[] {
                                                                    50,
                                                                    0,
                                                                    0,
                                                                    0});
            // 
            // Label1
            // 
            this.Label1.Location = new System.Drawing.Point(20, 36);
            this.Label1.Name = "Label1";
            this.Label1.Size = new System.Drawing.Size(56, 16);
            this.Label1.TabIndex = 3;
            this.Label1.Text = "Opacity:";
            // 
            // Form2
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.GroupBox1});
            this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
            this.Name = "Form2";
            this.Text = "A Transparent Form";
            this.GroupBox1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.udOpacity)).EndInit();
            this.ResumeLayout(false);

        }
        #endregion

        private void cmdApply_Click(object sender, System.EventArgs e)
        {
            this.Opacity = (double)udOpacity.Value / 100;
        }

        [STAThread]
        static void Main() 
        {
            Application.Run(new Transparent());
        }
    }
}