Csharp/C Sharp/GUI Windows Form/Color Dialog
Click on me to change the color
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class MainForm : Form {
private ColorDialog colorDlg;
private Color currColor = Color.DimGray;
public MainForm() {
CenterToScreen();
colorDlg = new ColorDialog();
this.MouseDown += new MouseEventHandler(MainForm_MouseDown);
}
void MainForm_MouseDown(object sender, MouseEventArgs e) {
if (colorDlg.ShowDialog() != DialogResult.Cancel) {
currColor = colorDlg.Color;
this.BackColor = currColor;
string strARGB = colorDlg.Color.ToString();
MessageBox.Show(strARGB, "Color is:");
}
}
}
</source>
Color Converter
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms; // class Form1 : Form {
private Color theColor;
public Form1() {
InitializeComponent();
tbRed.Text = "0";
tbGreen.Text = "0";
tbBlue.Text = "0";
}
private void parseRGB() {
int r, g, b;
r = Int16.Parse(tbRed.Text);
r = Math.Min(r, 255);
g = Int16.Parse(tbGreen.Text);
g = Math.Min(g, 255);
b = Int16.Parse(tbBlue.Text);
b = Math.Min(b, 255);
theColor = Color.FromArgb(r, g, b);
tbHue.Text = theColor.GetHue().ToString();
tbSat.Text = theColor.GetSaturation().ToString();
tbBright.Text = theColor.GetBrightness().ToString();
this.Invalidate();
}
private void tbRed_TextChanged(object sender, EventArgs e) {
parseRGB();
}
private void tbGreen_TextChanged(object sender, EventArgs e) {
parseRGB();
}
private void tbBlue_TextChanged(object sender, EventArgs e) {
parseRGB();
}
private void Form1_Paint(object sender, PaintEventArgs e) {
Graphics g = e.Graphics;
SolidBrush backBrush = new SolidBrush(System.Drawing.SystemColors.Control);
g.FillRectangle(backBrush, this.ClientRectangle);
backBrush.Dispose();
Rectangle r = new Rectangle(10, 80, 100, 40);
SolidBrush b = new SolidBrush(theColor);
g.SetClip(this.ClientRectangle);
g.FillRectangle(b, r);
b.Dispose();
}
private void InitializeComponent() {
this.tbRed = new System.Windows.Forms.TextBox();
this.tbGreen = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.tbBlue = new System.Windows.Forms.TextBox();
this.tbHue = new System.Windows.Forms.TextBox();
this.tbSat = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.label6 = new System.Windows.Forms.Label();
this.tbBright = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// tbRed
//
this.tbRed.Location = new System.Drawing.Point(45, 10);
this.tbRed.Name = "tbRed";
this.tbRed.Size = new System.Drawing.Size(47, 20);
this.tbRed.TabIndex = 1;
this.tbRed.TextChanged += new System.EventHandler(this.tbRed_TextChanged);
//
// tbGreen
//
this.tbGreen.Location = new System.Drawing.Point(149, 10);
this.tbGreen.Name = "tbGreen";
this.tbGreen.Size = new System.Drawing.Size(47, 20);
this.tbGreen.TabIndex = 2;
this.tbGreen.TextChanged += new System.EventHandler(this.tbGreen_TextChanged);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(13, 13);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(25, 14);
this.label1.TabIndex = 8;
this.label1.Text = "Red";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(106, 13);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(36, 14);
this.label2.TabIndex = 9;
this.label2.Text = "Green";
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(212, 13);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(27, 14);
this.label3.TabIndex = 10;
this.label3.Text = "Blue";
//
// tbBlue
//
this.tbBlue.Location = new System.Drawing.Point(246, 10);
this.tbBlue.Name = "tbBlue";
this.tbBlue.Size = new System.Drawing.Size(47, 20);
this.tbBlue.TabIndex = 3;
this.tbBlue.TextChanged += new System.EventHandler(this.tbBlue_TextChanged);
//
// tbHue
//
this.tbHue.Location = new System.Drawing.Point(45, 44);
this.tbHue.Name = "tbHue";
this.tbHue.ReadOnly = true;
this.tbHue.Size = new System.Drawing.Size(47, 20);
this.tbHue.TabIndex = 4;
//
// tbSat
//
this.tbSat.Location = new System.Drawing.Point(149, 44);
this.tbSat.Name = "tbSat";
this.tbSat.ReadOnly = true;
this.tbSat.Size = new System.Drawing.Size(47, 20);
this.tbSat.TabIndex = 5;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(13, 47);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(25, 14);
this.label4.TabIndex = 11;
this.label4.Text = "Hue";
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(121, 45);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(21, 14);
this.label5.TabIndex = 12;
this.label5.Text = "Sat";
//
// label6
//
this.label6.AutoSize = true;
this.label6.Location = new System.Drawing.Point(205, 47);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(34, 14);
this.label6.TabIndex = 13;
this.label6.Text = "Bright";
//
// tbBright
//
this.tbBright.Location = new System.Drawing.Point(246, 42);
this.tbBright.Name = "tbBright";
this.tbBright.ReadOnly = true;
this.tbBright.Size = new System.Drawing.Size(47, 20);
this.tbBright.TabIndex = 6;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(431, 217);
this.Controls.Add(this.tbBright);
this.Controls.Add(this.tbBlue);
this.Controls.Add(this.label6);
this.Controls.Add(this.label5);
this.Controls.Add(this.label4);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.tbSat);
this.Controls.Add(this.tbHue);
this.Controls.Add(this.tbGreen);
this.Controls.Add(this.tbRed);
this.Name = "Form1";
this.Text = "Form1";
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.TextBox tbRed;
private System.Windows.Forms.TextBox tbGreen;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox tbBlue;
private System.Windows.Forms.TextBox tbHue;
private System.Windows.Forms.TextBox tbSat;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.Label label6;
private System.Windows.Forms.TextBox tbBright;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
Display color dialog and get user selection
<source lang="csharp">
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class Test
{
static void Main()
{
System.Windows.Forms.ColorDialog colorDlg = new System.Windows.Forms.ColorDialog();
colorDlg.AnyColor = true;
colorDlg.ShowHelp = true;
if (colorDlg.ShowDialog() != DialogResult.Cancel)
{
string strARGB = colorDlg.Color.ToString();
Console.WriteLine(strARGB);
}
}
}
</source>
