Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
WinForm: Get available caption size
using System;
using System.Drawing;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
UpdateStats();
}
private void UpdateStats()
{
var availableWidth = CalcAvaliableCaptionWidth();
var textWidth = TextRenderer.MeasureText(captionTextTextBox.Text, SystemFonts.CaptionFont).Width;
availableSpaceTextBox.Text = availableWidth.ToString();
captionTextWidthTextBox.Text = textWidth.ToString();
statusPanel.BackColor = (textWidth > availableWidth ? Color.Red : Color.Green);
}
/// <summary>
/// Calculates an approximation of the available caption width
/// Depends on OS and theme
/// </summary>
/// <returns>Width</returns>
private int CalcAvaliableCaptionWidth()
{
return
// Form width
Width
// Icon
- (Icon == null ? 0 : Icon.Width)
// Minimize button (26 on Win8)
- (MinimizeBox ? SystemInformation.CaptionButtonSize.Width : 0)
// Maximize button (26 on Win8)
- (MaximizeBox ? SystemInformation.CaptionButtonSize.Width : 0)
// Close button (45 on Win8)
- SystemInformation.CaptionButtonSize.Width;
}
private void captionTextTextBox_TextChanged(object sender, EventArgs e)
{
Text = captionTextTextBox.Text;
UpdateStats();
}
#region Windows Form Designer generated code
/// <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);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.captionTextTextBox = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.availableSpaceTextBox = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.captionTextWidthTextBox = new System.Windows.Forms.TextBox();
this.statusPanel = new System.Windows.Forms.Panel();
this.label4 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// captionTextTextBox
//
this.captionTextTextBox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.captionTextTextBox.Location = new System.Drawing.Point(12, 31);
this.captionTextTextBox.Name = "captionTextTextBox";
this.captionTextTextBox.Size = new System.Drawing.Size(294, 20);
this.captionTextTextBox.TabIndex = 0;
this.captionTextTextBox.TextChanged += new System.EventHandler(this.captionTextTextBox_TextChanged);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(12, 15);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(87, 13);
this.label1.TabIndex = 1;
this.label1.Text = "Your caption text";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(12, 54);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(123, 13);
this.label2.TabIndex = 3;
this.label2.Text = "Available space (approx)";
//
// availableSpaceTextBox
//
this.availableSpaceTextBox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.availableSpaceTextBox.Location = new System.Drawing.Point(12, 70);
this.availableSpaceTextBox.Name = "availableSpaceTextBox";
this.availableSpaceTextBox.ReadOnly = true;
this.availableSpaceTextBox.Size = new System.Drawing.Size(294, 20);
this.availableSpaceTextBox.TabIndex = 2;
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(12, 93);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(71, 13);
this.label3.TabIndex = 5;
this.label3.Text = "Caption width";
//
// captionTextWidthTextBox
//
this.captionTextWidthTextBox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.captionTextWidthTextBox.Location = new System.Drawing.Point(12, 109);
this.captionTextWidthTextBox.Name = "captionTextWidthTextBox";
this.captionTextWidthTextBox.ReadOnly = true;
this.captionTextWidthTextBox.Size = new System.Drawing.Size(294, 20);
this.captionTextWidthTextBox.TabIndex = 4;
//
// statusPanel
//
this.statusPanel.Location = new System.Drawing.Point(12, 148);
this.statusPanel.Name = "statusPanel";
this.statusPanel.Size = new System.Drawing.Size(294, 40);
this.statusPanel.TabIndex = 6;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(12, 132);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(90, 13);
this.label4.TabIndex = 7;
this.label4.Text = "Fit status (approx)";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(318, 200);
this.Controls.Add(this.label4);
this.Controls.Add(this.statusPanel);
this.Controls.Add(this.label3);
this.Controls.Add(this.captionTextWidthTextBox);
this.Controls.Add(this.label2);
this.Controls.Add(this.availableSpaceTextBox);
this.Controls.Add(this.label1);
this.Controls.Add(this.captionTextTextBox);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.TextBox captionTextTextBox;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox availableSpaceTextBox;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox captionTextWidthTextBox;
private System.Windows.Forms.Panel statusPanel;
private System.Windows.Forms.Label label4;
#endregion
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.