form1.cs

C#编程100例源码,有好多例子呀,希望对学习C#的朋友有用,这是第二个包!20个

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace transparentWindow
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
        private System.Windows.Forms.TrackBar trackBar1;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
		/// <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.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.trackBar1 = new System.Windows.Forms.TrackBar();
            ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).BeginInit();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(48, 256);
            this.label1.Name = "label1";
            this.label1.TabIndex = 1;
            this.label1.Text = "完全透明";
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(40, 0);
            this.label2.Name = "label2";
            this.label2.TabIndex = 1;
            this.label2.Text = "完全不透明";
            // 
            // trackBar1
            // 
            this.trackBar1.Dock = System.Windows.Forms.DockStyle.Left;
            this.trackBar1.Maximum = 100;
            this.trackBar1.Name = "trackBar1";
            this.trackBar1.Orientation = System.Windows.Forms.Orientation.Vertical;
            this.trackBar1.Size = new System.Drawing.Size(42, 273);
            this.trackBar1.SmallChange = 5;
            this.trackBar1.TabIndex = 0;
            this.trackBar1.Value = 100;
            this.trackBar1.Scroll += new System.EventHandler(this.trackBar1_Scroll);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.label2,
                                                                          this.label1,
                                                                          this.trackBar1});
            this.Name = "Form1";
            this.Text = "透明窗口";
            ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).EndInit();
            this.ResumeLayout(false);

        }
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

        private void trackBar1_Scroll(object sender, System.EventArgs e)
        {
            this.Opacity = trackBar1.Value / 100.0;
        }
	}
}