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Rendre un Form Transparent

Rendre,un,Form,Transparent
{filelink=14623}

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
 
namespace TransparentForms
{
 
    public class Transparent : System.Windows.Forms.Form
    {
        internal System.Windows.Forms.GroupBox GroupBox1;
        internal System.Windows.Forms.Button cmdApply;
        internal System.Windows.Forms.NumericUpDown opacite;
        internal System.Windows.Forms.Label Label1;
 
        private System.ComponentModel.Container components = null;
 
        public Transparent()
        {
 
            InitializeComponent();
 
        }
 
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }
 
        private void InitializeComponent()
        {
            this.GroupBox1 = new System.Windows.Forms.GroupBox();
            this.cmdApply = new System.Windows.Forms.Button();
            this.opacite = new System.Windows.Forms.NumericUpDown();
            this.Label1 = new System.Windows.Forms.Label();
            this.GroupBox1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.opacite)).BeginInit();
            this.SuspendLayout();
            //
            // GroupBox1
            //
            this.GroupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                                    this.cmdApply,
                                                                                    this.opacite,
                                                                                    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 = "Appliquer";
            this.cmdApply.Click += new System.EventHandler(this.cmdApply_Click);
            //
            // opacite
            //
            this.opacite.Increment = new System.Decimal(new int[] {
                                                                        5,
                                                                        0,
                                                                        0,
                                                                        0});
            this.opacite.Location = new System.Drawing.Point(88, 32);
            this.opacite.Name = "opacite";
            this.opacite.Size = new System.Drawing.Size(48, 21);
            this.opacite.TabIndex = 4;
            this.opacite.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 = "Opacité:";
            //
            // 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 = "Exemple d'un Form Transparent";
            this.GroupBox1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.opacite)).EndInit();
            this.ResumeLayout(false);
 
        }
 
        private void cmdApply_Click(object sender, System.EventArgs e)
        {
            this.Opacity = (double)opacite.Value / 100;
        }
 
        [STAThread]
        static void Main()
        {
            Application.Run(new Transparent());
        }
    }
}

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