Csharp/C Sharp by API/System.Windows.Forms/CheckBox
Содержание
CheckBox.CheckAlign
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class Form1 : 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;
public Form1() {
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);
//
// Form1
//
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 = "Form1";
this.Text = "Check Boxes";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main() {
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e) {
Image imga = Image.FromFile("A.ICO");
chk_option3.Image = imga;
chk_option3.ImageAlign = ContentAlignment.MiddleRight;
chk_option3.BackColor = Color.LightBlue;
imga = Image.FromFile("B.ICO");
chk_option4.Image = imga;
chk_option4.ImageAlign = ContentAlignment.MiddleCenter;
chk_option4.BackColor = Color.LightBlue;
}
private void button1_Click(object sender, System.EventArgs e) {
string str_opt_selected = "Options Selected are ..\n";
if (chk_option1.Checked)
str_opt_selected = str_opt_selected + chk_option1.Text + "\n";
if (chk_option2.Checked)
str_opt_selected = str_opt_selected + chk_option2.Text + "\n";
if (chk_option3.Checked)
str_opt_selected = str_opt_selected + chk_option3.Text + "\n";
if (chk_option4.Checked)
str_opt_selected = str_opt_selected + chk_option4.Text + "\n";
MessageBox.Show(str_opt_selected, "Checked Options");
}
}
</source>
CheckBox.Checked
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.CheckBox checkBox1;
private System.Windows.Forms.CheckBox checkBox2;
private System.Windows.Forms.CheckBox checkBox3;
private System.Windows.Forms.RadioButton radioButton1;
private System.Windows.Forms.RadioButton radioButton2;
private System.Windows.Forms.RadioButton radioButton3;
private System.Windows.Forms.Button button1;
private System.ruponentModel.Container components = null;
public Form1() {
InitializeComponent();
}
private void InitializeComponent() {
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.checkBox2 = new System.Windows.Forms.CheckBox();
this.checkBox3 = new System.Windows.Forms.CheckBox();
this.radioButton1 = new System.Windows.Forms.RadioButton();
this.radioButton2 = new System.Windows.Forms.RadioButton();
this.radioButton3 = new System.Windows.Forms.RadioButton();
this.button1 = new System.Windows.Forms.Button();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.radioButton1,
this.radioButton2,
this.radioButton3});
this.groupBox1.Location = new System.Drawing.Point(8, 120);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(120, 144);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "Color";
this.groupBox1.Enter += new System.EventHandler(this.groupBox1_Enter);
//
// checkBox1
//
this.checkBox1.Location = new System.Drawing.Point(8, 8);
this.checkBox1.Name = "checkBox1";
this.checkBox1.TabIndex = 1;
this.checkBox1.Text = "Circle";
//
// checkBox2
//
this.checkBox2.Location = new System.Drawing.Point(8, 40);
this.checkBox2.Name = "checkBox2";
this.checkBox2.TabIndex = 2;
this.checkBox2.Text = "Rectangle";
//
// checkBox3
//
this.checkBox3.Location = new System.Drawing.Point(8, 72);
this.checkBox3.Name = "checkBox3";
this.checkBox3.TabIndex = 3;
this.checkBox3.Text = "String";
//
// radioButton1
//
this.radioButton1.Location = new System.Drawing.Point(8, 32);
this.radioButton1.Name = "radioButton1";
this.radioButton1.TabIndex = 4;
this.radioButton1.Text = "Red";
this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButton1_CheckedChanged);
//
// radioButton2
//
this.radioButton2.Location = new System.Drawing.Point(8, 64);
this.radioButton2.Name = "radioButton2";
this.radioButton2.TabIndex = 5;
this.radioButton2.Text = "Green";
//
// radioButton3
//
this.radioButton3.Location = new System.Drawing.Point(8, 96);
this.radioButton3.Name = "radioButton3";
this.radioButton3.TabIndex = 6;
this.radioButton3.Text = "Blue";
//
// button1
//
this.button1.Location = new System.Drawing.Point(8, 280);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(112, 32);
this.button1.TabIndex = 4;
this.button1.Text = "Draw";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(408, 317);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this.checkBox3,
this.checkBox2,
this.checkBox1,
this.groupBox1});
this.Name = "Form1";
this.Text = "CheckBox and RadioButton Sample";
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void groupBox1_Enter(object sender, System.EventArgs e)
{
Console.WriteLine("group box enter event");
}
private void radioButton1_CheckedChanged(object sender, System.EventArgs e)
{
Console.WriteLine("Radio Button checked changed event");
}
private void button1_Click(object sender, System.EventArgs e)
{
Graphics g = Graphics.FromHwnd(this.Handle);
String str = "";
Rectangle rc = new Rectangle(150, 50, 250, 250);
if(radioButton1.Checked)
{
str = "red";
}
if(radioButton2.Checked)
{
str+="Green";
}
if(radioButton3.Checked)
{
str+="Blue";
}
if (checkBox1.Checked)
{
str+="Ellipse";
}
if (checkBox2.Checked)
{
str += "Rectangle";
}
if (checkBox3.Checked)
{
g.FillRectangle(new SolidBrush(Color.White), rc);
g.DrawString(str, new Font("Verdana", 12), new SolidBrush(Color.Black), rc);
}
}
}
</source>
CheckBox.CheckedChanged
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class RadioButtons: Form {
bool bFillEllipse;
Color colorEllipse;
static void Main()
{
Application.Run(new RadioButtons());
}
RadioButtons()
{
ResizeRedraw = true;
string[] astrColor = { "Black", "Blue", "Green", "Cyan"};
GroupBox grpbox = new GroupBox();
grpbox.Parent = this;
grpbox.Text = "Color";
grpbox.Location = new Point(Font.Height / 2, Font.Height / 2);
grpbox.Size = new Size(9 * Font.Height, (3 * astrColor.Length + 4) * Font.Height / 2);
for (int i = 0; i < astrColor.Length; i++)
{
RadioButton radiobtn = new RadioButton();
radiobtn.Parent = grpbox;
radiobtn.Text = astrColor[i];
radiobtn.Location = new Point(Font.Height,3 * (i + 1) * Font.Height / 2);
radiobtn.Size = new Size(7 * Font.Height,3 * Font.Height / 2);
radiobtn.CheckedChanged += new EventHandler(RadioButtonOnCheckedChanged);
radiobtn.Checked = true;
}
CheckBox chkbox = new CheckBox();
chkbox.Parent = this;
chkbox.Text = "Fill Ellipse";
chkbox.Location = new Point(Font.Height, 3 * (astrColor.Length + 2) * Font.Height / 2);
chkbox.Size = new Size(Font.Height * 7, 3 * Font.Height / 2);
chkbox.CheckedChanged += new EventHandler(CheckBoxOnCheckedChanged);
}
void RadioButtonOnCheckedChanged(object obj, EventArgs ea)
{
RadioButton radiobtn = (RadioButton) obj;
if(radiobtn.Checked)
{
colorEllipse = Color.FromName(radiobtn.Text);
Invalidate(false);
}
}
void CheckBoxOnCheckedChanged(object obj, EventArgs ea)
{
bFillEllipse = ((CheckBox)obj).Checked;
Invalidate(false);
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Rectangle rect = new Rectangle(10 * Font.Height, 0,
ClientSize.Width -
10 * Font.Height - 1,
ClientSize.Height - 1);
if(bFillEllipse)
grfx.FillEllipse(new SolidBrush(colorEllipse), rect);
else
grfx.DrawEllipse(new Pen(colorEllipse), rect);
}
}
</source>
CheckBox.ThreeState
<source lang="csharp"> /* 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.ruponentModel; 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.ruponentModel.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 ..\n" ;
// 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 + "\n";
if ( chk_option2.Checked )
str_opt_selected = str_opt_selected + chk_option2.Text + "\n";
if ( chk_option3.Checked )
str_opt_selected = str_opt_selected + chk_option3.Text + "\n";
if ( chk_option4.Checked )
str_opt_selected = str_opt_selected + chk_option4.Text + "\n";
MessageBox.Show(str_opt_selected , "Checked Options");
}
}
}
</source>
extends CheckBox
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class CustomCheckBox: Form {
public static void Main()
{
Application.Run(new CustomCheckBox());
}
public CustomCheckBox()
{
int cyText = Font.Height;
int cxText = cyText / 2;
FontStyle[] afs = { FontStyle.Bold, FontStyle.Italic,
FontStyle.Underline, FontStyle.Strikeout };
Label label = new Label();
label.Parent = this;
label.Text = "Sample Text";
label.AutoSize = true;
for (int i = 0; i < 4; i++)
{
FontStyleCheckBox chkbox = new FontStyleCheckBox();
chkbox.Parent = this;
chkbox.Text = afs[i].ToString();
chkbox.fontstyle = afs[i];
chkbox.Location = new Point(2 * cxText,
(4 + 3 * i) * cyText / 2);
chkbox.Size = new Size(12 * cxText, cyText);
chkbox.CheckedChanged += new EventHandler(CheckBoxOnCheckedChanged);
}
}
void CheckBoxOnCheckedChanged(object obj, EventArgs ea)
{
FontStyle fs = 0;
Label label = null;
for (int i = 0; i < Controls.Count; i++)
{
Control ctrl = Controls[i];
if (ctrl.GetType() == typeof(Label))
label = (Label) ctrl;
else if (ctrl.GetType() == typeof(FontStyleCheckBox))
if (((FontStyleCheckBox) ctrl).Checked)
fs |= ((FontStyleCheckBox) ctrl).fontstyle;
}
label.Font = new Font(label.Font, fs);
}
} class FontStyleCheckBox: CheckBox {
public FontStyle fontstyle;
}
</source>
new CheckBox()
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class CheckBoxWithLabel: Form {
Label label;
FontStyle fs = 0;
FontStyle[] afs = { FontStyle.Bold,FontStyle.Italic, FontStyle.Underline, FontStyle.Strikeout };
public static void Main()
{
Application.Run(new CheckBoxWithLabel());
}
public CheckBoxWithLabel()
{
int cyText = Font.Height;
int cxText = cyText / 2;
string[] astrText = {"Bold", "Italic", "Underline", "Strikeout"};
label = new Label();
label.Parent = this;
label.Text = "Sample Text";
label.AutoSize = true;
for (int i = 0; i < 4; i++)
{
CheckBox chkbox = new CheckBox();
chkbox.Parent = this;
chkbox.Text = astrText[i];
chkbox.Location = new Point(2 * cxText, (4 + 3 * i) * cyText / 2);
chkbox.Size = new Size(12 * cxText, cyText);
chkbox.CheckedChanged += new EventHandler(CheckBoxOnCheckedChanged);
}
}
void CheckBoxOnCheckedChanged(object obj, EventArgs ea)
{
for (int i = 0; i < 4; i++)
if (((CheckBox) Controls[i + 1]).Checked)
fs |= afs[i];
label.Font = new Font(label.Font, fs);
}
}
</source>
