In this article, you will see how double buffering is a good and simple to use technique that helps overcome the flickering problem.
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namespace DoubleBufferExample
{
partial class Example
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (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.components = new System.ComponentModel.Container();
this.RefreshTimer = new System.Windows.Forms.Timer(this.components);
this.StartBtn = new System.Windows.Forms.Button();
this.StopBtn = new System.Windows.Forms.Button();
this.label3 = new System.Windows.Forms.Label();
this.TestMethodSelector = new System.Windows.Forms.ComboBox();
this.label2 = new System.Windows.Forms.Label();
this.RefreshInterval = new System.Windows.Forms.NumericUpDown();
this.label1 = new System.Windows.Forms.Label();
this.PaintMethodSelector = new System.Windows.Forms.ComboBox();
this.DoubleBufferControl1 = new DoubleBufferExample.DoubleBufferControl();
((System.ComponentModel.ISupportInitialize)(this.RefreshInterval)).BeginInit();
this.SuspendLayout();
//
// RefreshTimer
//
this.RefreshTimer.Enabled = true;
this.RefreshTimer.Interval = 800;
this.RefreshTimer.Tick += new System.EventHandler(this.RefreshTimer_Tick);
//
// StartBtn
//
this.StartBtn.Location = new System.Drawing.Point(5, 170);
this.StartBtn.Name = "StartBtn";
this.StartBtn.Size = new System.Drawing.Size(75, 23);
this.StartBtn.TabIndex = 16;
this.StartBtn.Text = "Start";
this.StartBtn.UseVisualStyleBackColor = true;
this.StartBtn.Click += new System.EventHandler(this.StartBtn_Click);
//
// StopBtn
//
this.StopBtn.Location = new System.Drawing.Point(95, 170);
this.StopBtn.Name = "StopBtn";
this.StopBtn.Size = new System.Drawing.Size(75, 23);
this.StopBtn.TabIndex = 15;
this.StopBtn.Text = "Stop";
this.StopBtn.UseVisualStyleBackColor = true;
this.StopBtn.Click += new System.EventHandler(this.StopBtn_Click);
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(2, 55);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(66, 13);
this.label3.TabIndex = 14;
this.label3.Text = "Test method";
this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
//
// TestMethodSelector
//
this.TestMethodSelector.BackColor = System.Drawing.Color.Snow;
this.TestMethodSelector.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.TestMethodSelector.FormattingEnabled = true;
this.TestMethodSelector.Items.AddRange(new object[] {
"Draw test",
"Fill test"});
this.TestMethodSelector.Location = new System.Drawing.Point(5, 71);
this.TestMethodSelector.Name = "TestMethodSelector";
this.TestMethodSelector.Size = new System.Drawing.Size(165, 21);
this.TestMethodSelector.TabIndex = 13;
this.TestMethodSelector.SelectedIndexChanged += new System.EventHandler(this.TestMethodSelector_SelectedIndexChanged);
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(5, 99);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(81, 13);
this.label2.TabIndex = 12;
this.label2.Text = "Refresh interval";
this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
//
// RefreshInterval
//
this.RefreshInterval.BackColor = System.Drawing.Color.Snow;
this.RefreshInterval.Location = new System.Drawing.Point(5, 115);
this.RefreshInterval.Maximum = new decimal(new int[] {
5000,
0,
0,
0});
this.RefreshInterval.Minimum = new decimal(new int[] {
100,
0,
0,
0});
this.RefreshInterval.Name = "RefreshInterval";
this.RefreshInterval.Size = new System.Drawing.Size(72, 20);
this.RefreshInterval.TabIndex = 11;
this.RefreshInterval.Value = new decimal(new int[] {
800,
0,
0,
0});
this.RefreshInterval.ValueChanged += new System.EventHandler(this.RefreshInterval_ValueChanged);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(2, 10);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(69, 13);
this.label1.TabIndex = 10;
this.label1.Text = "Paint method";
this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
//
// PaintMethodSelector
//
this.PaintMethodSelector.BackColor = System.Drawing.Color.Snow;
this.PaintMethodSelector.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.PaintMethodSelector.FormattingEnabled = true;
this.PaintMethodSelector.Items.AddRange(new object[] {
"Without double buffer",
"Built-in double buffer ",
"Built-in optimized double buffer",
"Manual double buffer 1.1",
"Manual double buffer 2.0"});
this.PaintMethodSelector.Location = new System.Drawing.Point(5, 26);
this.PaintMethodSelector.Name = "PaintMethodSelector";
this.PaintMethodSelector.Size = new System.Drawing.Size(165, 21);
this.PaintMethodSelector.TabIndex = 9;
this.PaintMethodSelector.SelectedIndexChanged += new System.EventHandler(this.PaintMethodSelector_SelectedIndexChanged);
//
// DoubleBufferControl1
//
this.DoubleBufferControl1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.DoubleBufferControl1.BackColor = System.Drawing.Color.Black;
this.DoubleBufferControl1.GraphicTest = DoubleBufferExample.DoubleBufferControl.GraphicTestMethods.DrawTest;
this.DoubleBufferControl1.Location = new System.Drawing.Point(176, 0);
this.DoubleBufferControl1.Name = "DoubleBufferControl1";
this.DoubleBufferControl1.PaintMethod = DoubleBufferExample.DoubleBufferControl.DoubleBufferMethod.NoDoubleBuffer;
this.DoubleBufferControl1.Size = new System.Drawing.Size(372, 270);
this.DoubleBufferControl1.TabIndex = 0;
this.DoubleBufferControl1.Text = "doubleBufferControl1";
//
// Example
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.OldLace;
this.ClientSize = new System.Drawing.Size(546, 268);
this.Controls.Add(this.StartBtn);
this.Controls.Add(this.StopBtn);
this.Controls.Add(this.label3);
this.Controls.Add(this.TestMethodSelector);
this.Controls.Add(this.label2);
this.Controls.Add(this.RefreshInterval);
this.Controls.Add(this.label1);
this.Controls.Add(this.PaintMethodSelector);
this.Controls.Add(this.DoubleBufferControl1);
this.Name = "Example";
this.Text = "Double Buffer Example";
((System.ComponentModel.ISupportInitialize)(this.RefreshInterval)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private DoubleBufferControl DoubleBufferControl1;
private System.Windows.Forms.Timer RefreshTimer;
private System.Windows.Forms.Button StartBtn;
private System.Windows.Forms.Button StopBtn;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.ComboBox TestMethodSelector;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.NumericUpDown RefreshInterval;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.ComboBox PaintMethodSelector;
}
}
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