I have a groupbox which I created a custom paint event for so that I can control the border color.
It works great when the groupbox is on a form but when the groupbox is on a tabpage, the control does not paint properly. Everything is blurry and the child controls inside the groupbox are also blurry and get a border drawn.
Any gentle help would be greatly appreciated! Thanks, Dan
using System.Drawing;
using System.Windows.Forms;
namespace CustomGroupBoxPaint
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
///////////////////////////////////////////////////////////////////////
private void groupBox_Paint(object sender, PaintEventArgs e)
{
// Default border line color
Color lineColor = Color.LightGray;
// Get the control
GroupBox gb = (GroupBox)sender;
// Figure out which color to use
if (gb.Enabled == true)
{
// User black line
lineColor = Color.Black;
}
else
{
// Use dark gray color
lineColor = Color.DarkGray;
}
//get the text size in groupbox
System.Drawing.Size tSize = TextRenderer.MeasureText(e.Graphics, gb.Text, gb.Font);
// Draw groupbox border
Rectangle borderRect = e.ClipRectangle;
borderRect.Y = (borderRect.Y + (tSize.Height / 2));
borderRect.Height = (borderRect.Height - (tSize.Height / 2));
ControlPaint.DrawBorder(e.Graphics, borderRect, lineColor, ButtonBorderStyle.Solid);
// Draw groupbox text
Rectangle textRect = e.ClipRectangle;
textRect.X = (textRect.X + 6);
textRect.Width = tSize.Width + 5;
textRect.Height = tSize.Height;
e.Graphics.FillRectangle(new SolidBrush(gb.BackColor), textRect);
TextRenderer.DrawText(e.Graphics, gb.Text, gb.Font, textRect, gb.ForeColor);
}
}
}
namespace CustomGroupBoxPaint
{
partial class Form1
{
/// <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.tabControl1 = new System.Windows.Forms.TabControl();
this.tabPage1 = new System.Windows.Forms.TabPage();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.checkBox2 = new System.Windows.Forms.CheckBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.tabPage2 = new System.Windows.Forms.TabPage();
this.groupBox3 = new System.Windows.Forms.GroupBox();
this.checkBox3 = new System.Windows.Forms.CheckBox();
this.groupBox4 = new System.Windows.Forms.GroupBox();
this.checkBox4 = new System.Windows.Forms.CheckBox();
this.tabControl1.SuspendLayout();
this.tabPage1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.groupBox1.SuspendLayout();
this.groupBox3.SuspendLayout();
this.groupBox4.SuspendLayout();
this.SuspendLayout();
//
// tabControl1
//
this.tabControl1.Controls.Add(this.tabPage1);
this.tabControl1.Controls.Add(this.tabPage2);
this.tabControl1.Location = new System.Drawing.Point(40, 24);
this.tabControl1.Name = "tabControl1";
this.tabControl1.SelectedIndex = 0;
this.tabControl1.Size = new System.Drawing.Size(376, 352);
this.tabControl1.TabIndex = 0;
//
// tabPage1
//
this.tabPage1.Controls.Add(this.groupBox2);
this.tabPage1.Controls.Add(this.groupBox1);
this.tabPage1.Location = new System.Drawing.Point(4, 22);
this.tabPage1.Name = "tabPage1";
this.tabPage1.Padding = new System.Windows.Forms.Padding(3);
this.tabPage1.Size = new System.Drawing.Size(368, 326);
this.tabPage1.TabIndex = 0;
this.tabPage1.Text = "tabPage1";
this.tabPage1.UseVisualStyleBackColor = true;
//
// groupBox2
//
this.groupBox2.Controls.Add(this.checkBox2);
this.groupBox2.Enabled = false;
this.groupBox2.Location = new System.Drawing.Point(52, 168);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(272, 100);
this.groupBox2.TabIndex = 1;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "DisabledGBTabPage";
this.groupBox2.Paint += new System.Windows.Forms.PaintEventHandler(this.groupBox_Paint);
//
// checkBox2
//
this.checkBox2.AutoSize = true;
this.checkBox2.Location = new System.Drawing.Point(64, 42);
this.checkBox2.Name = "checkBox2";
this.checkBox2.Size = new System.Drawing.Size(80, 17);
this.checkBox2.TabIndex = 1;
this.checkBox2.Text = "checkBox2";
this.checkBox2.UseVisualStyleBackColor = true;
//
// groupBox1
//
this.groupBox1.Controls.Add(this.checkBox1);
this.groupBox1.Location = new System.Drawing.Point(48, 32);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(272, 100);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "EnabledGBTabPage";
this.groupBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.groupBox_Paint);
//
// checkBox1
//
this.checkBox1.AutoSize = true;
this.checkBox1.Location = new System.Drawing.Point(64, 48);
this.checkBox1.Name = "checkBox1";
this.checkBox1.Size = new System.Drawing.Size(80, 17);
this.checkBox1.TabIndex = 0;
this.checkBox1.Text = "checkBox1";
this.checkBox1.UseVisualStyleBackColor = true;
//
// tabPage2
//
this.tabPage2.Location = new System.Drawing.Point(4, 22);
this.tabPage2.Name = "tabPage2";
this.tabPage2.Padding = new System.Windows.Forms.Padding(3);
this.tabPage2.Size = new System.Drawing.Size(368, 326);
this.tabPage2.TabIndex = 1;
this.tabPage2.Text = "tabPage2";
this.tabPage2.UseVisualStyleBackColor = true;
//
// groupBox3
//
this.groupBox3.Controls.Add(this.checkBox3);
this.groupBox3.Location = new System.Drawing.Point(512, 78);
this.groupBox3.Name = "groupBox3";
this.groupBox3.Size = new System.Drawing.Size(200, 100);
this.groupBox3.TabIndex = 1;
this.groupBox3.TabStop = false;
this.groupBox3.Text = "EnabledGBform";
this.groupBox3.Paint += new System.Windows.Forms.PaintEventHandler(this.groupBox_Paint);
//
// checkBox3
//
this.checkBox3.AutoSize = true;
this.checkBox3.Location = new System.Drawing.Point(60, 42);
this.checkBox3.Name = "checkBox3";
this.checkBox3.Size = new System.Drawing.Size(80, 17);
this.checkBox3.TabIndex = 1;
this.checkBox3.Text = "checkBox3";
this.checkBox3.UseVisualStyleBackColor = true;
//
// groupBox4
//
this.groupBox4.Controls.Add(this.checkBox4);
this.groupBox4.Enabled = false;
this.groupBox4.Location = new System.Drawing.Point(512, 238);
this.groupBox4.Name = "groupBox4";
this.groupBox4.Size = new System.Drawing.Size(200, 100);
this.groupBox4.TabIndex = 2;
this.groupBox4.TabStop = false;
this.groupBox4.Text = "DisabledGBform";
this.groupBox4.Paint += new System.Windows.Forms.PaintEventHandler(this.groupBox_Paint);
//
// checkBox4
//
this.checkBox4.AutoSize = true;
this.checkBox4.Location = new System.Drawing.Point(60, 42);
this.checkBox4.Name = "checkBox4";
this.checkBox4.Size = new System.Drawing.Size(80, 17);
this.checkBox4.TabIndex = 1;
this.checkBox4.Text = "checkBox4";
this.checkBox4.UseVisualStyleBackColor = true;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(800, 450);
this.Controls.Add(this.groupBox4);
this.Controls.Add(this.groupBox3);
this.Controls.Add(this.tabControl1);
this.Name = "Form1";
this.Text = "Form1";
this.tabControl1.ResumeLayout(false);
this.tabPage1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.groupBox2.PerformLayout();
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.groupBox3.ResumeLayout(false);
this.groupBox3.PerformLayout();
this.groupBox4.ResumeLayout(false);
this.groupBox4.PerformLayout();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.TabControl tabControl1;
private System.Windows.Forms.TabPage tabPage1;
private System.Windows.Forms.TabPage tabPage2;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.GroupBox groupBox3;
private System.Windows.Forms.GroupBox groupBox4;
private System.Windows.Forms.CheckBox checkBox2;
private System.Windows.Forms.CheckBox checkBox1;
private System.Windows.Forms.CheckBox checkBox3;
private System.Windows.Forms.CheckBox checkBox4;
}
}
