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POwinforms Label flickering
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  1. POwinforms Label flickering
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    copied!<p>I have a problem with the Label control that is terribly flickering.</p> <p>Below is some code to reproduce the problem.</p> <p>How to solve this?</p> <p>UPDATE: The solution for the previous case (a Form contains a Label directly) was to make the form.DoubleBuffered = true. But this is not a generic solution. For example, what should I do in the case of label inside a SplitContainer? this is my real case.</p> <p>UPDATED CODE:</p> <p>DoubleBufferedLabel.cs:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; namespace FlickerLabelTest { public class DoubleBufferedLabel : Label { public DoubleBufferedLabel() { DoubleBuffered = true; } } } </code></pre> <p>DoubleBufferedSplitContainer.cs:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; namespace FlickerLabelTest { public class DoubleBufferedSplitContainer : SplitContainer { public DoubleBufferedSplitContainer() { DoubleBuffered = true; } } } </code></pre> <p>Form1.cs:</p> <pre><code>using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace FlickerLabelTest { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void timer1_Tick(object sender, EventArgs e) { label1.Text += "0"; } } } </code></pre> <p>Form1.Designer.cs:</p> <pre><code>namespace FlickerLabelTest { partial class Form1 { /// &lt;summary&gt; /// Required designer variable. /// &lt;/summary&gt; private System.ComponentModel.IContainer components = null; /// &lt;summary&gt; /// Clean up any resources being used. /// &lt;/summary&gt; /// &lt;param name="disposing"&gt;true if managed resources should be disposed; otherwise, false.&lt;/param&gt; protected override void Dispose(bool disposing) { if (disposing &amp;&amp; (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows Form Designer generated code /// &lt;summary&gt; /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// &lt;/summary&gt; private void InitializeComponent() { this.components = new System.ComponentModel.Container(); this.timer1 = new System.Windows.Forms.Timer(this.components); this.label1 = new FlickerLabelTest.DoubleBufferedLabel(); this.splitContainer1 = new DoubleBufferedSplitContainer(); this.splitContainer1.Panel2.SuspendLayout(); this.splitContainer1.SuspendLayout(); this.SuspendLayout(); // // timer1 // this.timer1.Enabled = true; this.timer1.Interval = 1; this.timer1.Tick += new System.EventHandler(this.timer1_Tick); // // label1 // this.label1.Dock = System.Windows.Forms.DockStyle.Fill; this.label1.Location = new System.Drawing.Point(0, 0); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(186, 262); this.label1.TabIndex = 0; this.label1.Text = "label1"; // // splitContainer1 // this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill; this.splitContainer1.Location = new System.Drawing.Point(0, 0); this.splitContainer1.Name = "splitContainer1"; // // splitContainer1.Panel2 // this.splitContainer1.Panel2.Controls.Add(this.label1); this.splitContainer1.Size = new System.Drawing.Size(284, 262); this.splitContainer1.SplitterDistance = 94; this.splitContainer1.TabIndex = 1; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(284, 262); this.Controls.Add(this.splitContainer1); this.DoubleBuffered = true; this.Name = "Form1"; this.Text = "Form1"; this.WindowState = System.Windows.Forms.FormWindowState.Maximized; this.splitContainer1.Panel2.ResumeLayout(false); this.splitContainer1.ResumeLayout(false); this.ResumeLayout(false); } #endregion private System.Windows.Forms.Timer timer1; private DoubleBufferedLabel label1; private DoubleBufferedSplitContainer splitContainer1; } } </code></pre> <p>Program.cs:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Windows.Forms; namespace FlickerLabelTest { static class Program { /// &lt;summary&gt; /// The main entry point for the application. /// &lt;/summary&gt; [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } } } </code></pre>
 

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