using System;
using System.Collections.Generic;
using System.ComponentModel;
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());
}
}
Author: coder
Click on me to change the color
using System;
using System.Collections.Generic;
using System.ComponentModel;
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:");
}
}
}
Display color dialog and get user selection
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
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);
}
}
}
Color Dialog and Font Dialog
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace ColorFontDialog
{
/// <summary>
/// Summary description for ColorFontDialog.
/// </summary>
public class ColorFontDialog : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public ColorFontDialog()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "Font and Color Dialogs";
this.button1.Text = "&Font";
this.button2.Text = "&Color";
this.label1.Text = "Change my FONT and COLOR!";
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (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.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(24, 8);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click_1);
//
// button2
//
this.button2.Location = new System.Drawing.Point(120, 8);
this.button2.Name = "button2";
this.button2.TabIndex = 1;
this.button2.Text = "button2";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 48);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(280, 48);
this.label1.TabIndex = 2;
this.label1.Text = "label1";
//
// ColorFontDialog
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 101);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label1,
this.button2,
this.button1});
this.Name = "ColorFontDialog";
this.Text = "ColorFontDialog";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new ColorFontDialog());
}
private void button2_Click(object sender, System.EventArgs e)
{
ColorDialog cd = new ColorDialog();
cd.AllowFullOpen = true; // allow custom colors
//cd.FullOpen = true; // shows custom colors automatically
cd.Color = Color.DarkBlue; // sets the custom color
//cd.Color = Color.Blue; // set the basic color
if(cd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
this.label1.ForeColor = cd.Color;
}
private void button1_Click_1(object sender, System.EventArgs e)
{
FontDialog fd = new FontDialog();
fd.ShowColor = true;
fd.Color = Color.Blue;
fd.ShowApply = true; // ColorDialog does not provide this option!!!
fd.Apply += new EventHandler(ApplyFont);
if(fd.ShowDialog() != System.Windows.Forms.DialogResult.Cancel)
ChangeFont(fd);
}
private void ApplyFont(object o, EventArgs ea)
{
ChangeFont((FontDialog)o);
}
private void ChangeFont(FontDialog fd)
{
this.label1.Font = fd.Font;
this.label1.ForeColor = fd.Color;
}
}
}
Add items to combo box
using System;
using System.Drawing;
using System.Windows.Forms;
public class Select : Form {
private Button draw = new Button();
private ComboBox color = new ComboBox();
public Select( ) {
draw.Text = "Draw";
color.Text = "Choose a color";
Size = new Size(500,250);
int w = 20;
draw.Location = new Point(20,30);
color.Location = new Point(w += 10 + color.Width, 30);
color.Items.Add("Red");
color.Items.Add("Green");
color.Items.Add("Blue");
Controls.Add(draw);
Controls.Add(color);
draw.Click += new EventHandler(Draw_Click);
}
protected void Draw_Click(Object sender, EventArgs e) {
if (color.SelectedItem.ToString() == "Red" )
Console.WriteLine("It is red.");
else if (color.SelectedItem.ToString() == "Green")
Console.WriteLine("It is green.");
else
Console.WriteLine("It is blue.");
}
static void Main() {
Application.Run(new Select());
}
}
Get Selected item from ComboBox
using System;
using System.Drawing;
using System.Windows.Forms;
public class Select : Form {
private Button draw = new Button();
private ComboBox color = new ComboBox();
public Select( ) {
draw.Text = "Draw";
color.Text = "Choose a color";
Size = new Size(500,250);
int w = 20;
draw.Location = new Point(20,30);
color.Location = new Point(w += 10 + color.Width, 30);
color.Items.Add("Red");
color.Items.Add("Green");
color.Items.Add("Blue");
Controls.Add(draw);
Controls.Add(color);
draw.Click += new EventHandler(Draw_Click);
}
protected void Draw_Click(Object sender, EventArgs e) {
if (color.SelectedItem.ToString() == "Red" )
Console.WriteLine("It is red.");
else if (color.SelectedItem.ToString() == "Green")
Console.WriteLine("It is green.");
else
Console.WriteLine("It is blue.");
}
static void Main() {
Application.Run(new Select());
}
}
CheckBox Style
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace CheckBox
{
/// <summary>
/// Summary description for CheckBoxStyle.
/// </summary>
public class CheckBoxStyle : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.CheckBox chk_option1;
private System.Windows.Forms.CheckBox chk_option2;
private System.Windows.Forms.CheckBox chk_option3;
private System.Windows.Forms.CheckBox chk_option4;
private System.Windows.Forms.Button button1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public CheckBoxStyle()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (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.chk_option1 = new System.Windows.Forms.CheckBox();
this.label1 = new System.Windows.Forms.Label();
this.chk_option2 = new System.Windows.Forms.CheckBox();
this.chk_option3 = new System.Windows.Forms.CheckBox();
this.chk_option4 = new System.Windows.Forms.CheckBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.button1 = new System.Windows.Forms.Button();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// chk_option1
//
this.chk_option1.CheckAlign = System.Drawing.ContentAlignment.MiddleRight;
this.chk_option1.Location = new System.Drawing.Point(40, 24);
this.chk_option1.Name = "chk_option1";
this.chk_option1.Size = new System.Drawing.Size(192, 24);
this.chk_option1.TabIndex = 0;
this.chk_option1.Text = "Windows 2000 / Windows XP";
this.chk_option1.ThreeState = true;
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(296, 16);
this.label1.TabIndex = 1;
this.label1.Text = "The following products are developed by Microsoft Corp.";
//
// chk_option2
//
this.chk_option2.Location = new System.Drawing.Point(40, 56);
this.chk_option2.Name = "chk_option2";
this.chk_option2.Size = new System.Drawing.Size(192, 24);
this.chk_option2.TabIndex = 0;
this.chk_option2.Text = "JAVA";
//
// chk_option3
//
this.chk_option3.Appearance = System.Windows.Forms.Appearance.Button;
this.chk_option3.ImageAlign = System.Drawing.ContentAlignment.MiddleRight;
this.chk_option3.Location = new System.Drawing.Point(40, 88);
this.chk_option3.Name = "chk_option3";
this.chk_option3.Size = new System.Drawing.Size(192, 24);
this.chk_option3.TabIndex = 0;
this.chk_option3.Text = "Visual C# and .NET";
//
// chk_option4
//
this.chk_option4.Appearance = System.Windows.Forms.Appearance.Button;
this.chk_option4.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.chk_option4.Location = new System.Drawing.Point(40, 120);
this.chk_option4.Name = "chk_option4";
this.chk_option4.Size = new System.Drawing.Size(192, 24);
this.chk_option4.TabIndex = 0;
this.chk_option4.Text = "Oracle Database";
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.chk_option2,
this.chk_option4,
this.chk_option3,
this.chk_option1});
this.groupBox1.Location = new System.Drawing.Point(16, 56);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(280, 152);
this.groupBox1.TabIndex = 2;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "Select All Correct Options";
//
// button1
//
this.button1.Location = new System.Drawing.Point(16, 216);
this.button1.Name = "button1";
this.button1.TabIndex = 3;
this.button1.Text = "Done ";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// CheckBoxStyle
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(328, 253);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this.groupBox1,
this.label1});
this.Name = "CheckBoxStyle";
this.Text = "Check Boxes";
this.Load += new System.EventHandler(this.CheckBoxStyle_Load);
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new CheckBoxStyle());
}
private void CheckBoxStyle_Load(object sender, System.EventArgs e)
{
// Load the Image that we want to display on the button
Image imga = Image.FromFile("WRENCH.ICO");
// Assign the Image for the checkbox
chk_option3.Image = imga;
// Align the image on the face of the checkbox
chk_option3.ImageAlign = ContentAlignment.MiddleRight;
// Select the background color for the checkbox
chk_option3.BackColor = Color.LightBlue ;
// Load the Image that we want to display on the button
imga = Image.FromFile("EYE.ICO");
// Assign the Image for the checkbox
chk_option4.Image = imga;
// Align the image on the face of the checkbox
chk_option4.ImageAlign = ContentAlignment.MiddleCenter;
// Select the background color for the checkbox
chk_option4.BackColor = Color.LightBlue ;
}
private void button1_Click(object sender, System.EventArgs e)
{
string str_opt_selected = "Options Selected are ..
" ;
// Check which options are selected for every checkbox
// using the Checked property
if ( chk_option1.Checked )
str_opt_selected = str_opt_selected + chk_option1.Text + "
";
if ( chk_option2.Checked )
str_opt_selected = str_opt_selected + chk_option2.Text + "
";
if ( chk_option3.Checked )
str_opt_selected = str_opt_selected + chk_option3.Text + "
";
if ( chk_option4.Checked )
str_opt_selected = str_opt_selected + chk_option4.Text + "
";
MessageBox.Show(str_opt_selected , "Checked Options");
}
}
}
CheckBox.zip( 33 k)