в 15:31, 26 мая 2010

2010-05-26T15:31:18Z

Admin: 1 версия

2010-05-26T11:32:52Z

1 версия

Новая страница

==Dragging Images==

<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 PictureBox happyBox = new PictureBox();
private int oldX, oldY;
private bool isDragging;
private Rectangle dropRect = new Rectangle(100, 100, 140, 170);
public MainForm() {
happyBox.SizeMode = PictureBoxSizeMode.StretchImage;
happyBox.Location = new System.Drawing.Point(64, 32);
happyBox.Size = new System.Drawing.Size(50, 50);
happyBox.Cursor = Cursors.Hand;
happyBox.Image = new Bitmap("happyDude.bmp");
happyBox.MouseDown += new MouseEventHandler(happyBox_MouseDown);
happyBox.MouseUp += new MouseEventHandler(happyBox_MouseUp);
happyBox.MouseMove += new MouseEventHandler(happyBox_MouseMove);
Controls.Add(happyBox);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 361);
this.Text = "Dragging Images";
this.Paint += new System.Windows.Forms.PaintEventHandler(this.MainForm_Paint);
}
void happyBox_MouseMove(object sender, MouseEventArgs e) {
if (isDragging) {
happyBox.Top = happyBox.Top + (e.Y - oldY);
happyBox.Left = happyBox.Left + (e.X - oldX);
}
}
void happyBox_MouseUp(object sender, MouseEventArgs e) {
isDragging = false;
if (dropRect.Contains(happyBox.Bounds))
MessageBox.Show("You win!", "What an amazing test of skill...");
}
void happyBox_MouseDown(object sender, MouseEventArgs e) {
isDragging = true;
oldX = e.X;
oldY = e.Y;
}
private void MainForm_Paint(object sender, PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.BlueViolet, dropRect);
g.DrawString("Drag the happy guy in here...",new Font("Times New Roman", 25), Brushes.WhiteSmoke, dropRect);
}
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new MainForm());
}
}
</source>

==Load image to ImageBox==

<source lang="csharp">
using System;
using System.Drawing;
using System.Windows.Forms;
public class MyForm : System.Windows.Forms.Form
{
private Button btnLoad;
private PictureBox imgPhoto;
public MyForm()
{
this.Text = "www.nfex.ru";
btnLoad = new Button();
btnLoad.Text = "&Load";
btnLoad.Left = 10;
btnLoad.Top = 10;
btnLoad.Click += new System.EventHandler(this.OnLoadClick);
imgPhoto = new PictureBox();
imgPhoto.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
imgPhoto.Width = this.Width / 2;
imgPhoto.Height = this.Height / 2;
imgPhoto.Left = (this.Width - imgPhoto.Width) / 2;
imgPhoto.Top = (this.Height - imgPhoto.Height) / 2;
imgPhoto.SizeMode = PictureBoxSizeMode.StretchImage;
this.Controls.Add(btnLoad);
this.Controls.Add(imgPhoto);
}
protected void OnLoadClick(object sender, System.EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Title = "Open Image";
dlg.Filter = "jpg files (*.jpg)|*.jpg|All files (*.*)|*.*" ;
if (dlg.ShowDialog() == DialogResult.OK)
{
imgPhoto.Image = new Bitmap(dlg.OpenFile());
}
dlg.Dispose();
}

public static void Main()
{
Application.Run(new MyForm());
}
}

</source>

==PictureBox Click event==

<source lang="csharp">
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
public class PictureBoxTest : System.Windows.Forms.Form
{
private System.Windows.Forms.PictureBox imagePictureBox;
private System.Windows.Forms.Label promptLabel;
public PictureBoxTest()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.promptLabel = new System.Windows.Forms.Label();
this.imagePictureBox = new System.Windows.Forms.PictureBox();
this.SuspendLayout();
this.promptLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.promptLabel.Location = new System.Drawing.Point(22, 8);
this.promptLabel.Name = "promptLabel";
this.promptLabel.Size = new System.Drawing.Size(124, 56);
this.promptLabel.TabIndex = 0;
this.promptLabel.Text = "Click On PictureBox to View Images";
this.promptLabel.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
this.imagePictureBox.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.imagePictureBox.Location = new System.Drawing.Point(34, 72);
this.imagePictureBox.Name = "imagePictureBox";
this.imagePictureBox.Size = new System.Drawing.Size(100, 100);
this.imagePictureBox.TabIndex = 1;
this.imagePictureBox.TabStop = false;
this.imagePictureBox.Click += new System.EventHandler(this.imagePictureBox_Click );
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(168, 189);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.imagePictureBox,
this.promptLabel});
this.Text = "PictureBoxTest";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run( new PictureBoxTest() );
}
private void imagePictureBox_Click(object sender, System.EventArgs e )
{
imagePictureBox.Image = Image.FromFile(Directory.GetCurrentDirectory() + "\\winter.jpg" );
}
}

</source>

==PictureBox Demo==

<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 BictureBox
{
/// <summary>
/// Summary description for PictureBoxDemo.
/// </summary>
public class PictureBoxDemo : System.Windows.Forms.Form
{
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.PictureBox pictureBox2;
private System.Windows.Forms.PictureBox pictureBox3;
private System.Windows.Forms.PictureBox pictureBox4;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public PictureBoxDemo()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "SizeMode in PictureBox";
this.button1.Text = "Display";
//
// 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.pictureBox1 = new System.Windows.Forms.PictureBox();
this.button1 = new System.Windows.Forms.Button();
this.pictureBox2 = new System.Windows.Forms.PictureBox();
this.pictureBox3 = new System.Windows.Forms.PictureBox();
this.pictureBox4 = new System.Windows.Forms.PictureBox();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox1.Location = new System.Drawing.Point(8, 8);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(100, 70);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//
// button1
//
this.button1.Location = new System.Drawing.Point(232, 24);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(56, 23);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// pictureBox2
//
this.pictureBox2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox2.Location = new System.Drawing.Point(120, 8);
this.pictureBox2.Name = "pictureBox2";
this.pictureBox2.Size = new System.Drawing.Size(100, 70);
this.pictureBox2.TabIndex = 0;
this.pictureBox2.TabStop = false;
//
// pictureBox3
//
this.pictureBox3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox3.Location = new System.Drawing.Point(8, 88);
this.pictureBox3.Name = "pictureBox3";
this.pictureBox3.Size = new System.Drawing.Size(100, 70);
this.pictureBox3.TabIndex = 0;
this.pictureBox3.TabStop = false;
//
// pictureBox4
//
this.pictureBox4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox4.Location = new System.Drawing.Point(120, 88);
this.pictureBox4.Name = "pictureBox4";
this.pictureBox4.Size = new System.Drawing.Size(100, 70);
this.pictureBox4.TabIndex = 0;
this.pictureBox4.TabStop = false;
//
// PictureBoxDemo
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(376, 254);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this.pictureBox2,
this.pictureBox3,
this.pictureBox4,
this.pictureBox1});
this.Name = "PictureBoxDemo";
this.Text = "PictureBoxDemo";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new PictureBoxDemo());
}
private void button1_Click(object sender, System.EventArgs e)
{
SetPictureBoxSizeMode();
}
private void SetPictureBoxSizeMode()
{
string path = @"Dobos3.BMP"; // Change the path if needed.
pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
pictureBox1.Image = Image.FromFile(path);

pictureBox2.SizeMode = PictureBoxSizeMode.Normal;
pictureBox2.Image = Image.FromFile(path);

pictureBox3.SizeMode = PictureBoxSizeMode.StretchImage;
pictureBox3.Image = Image.FromFile(path);
pictureBox4.SizeMode = PictureBoxSizeMode.AutoSize;
pictureBox4.Image = Image.FromFile(path);
}
}
}

</source>
<A href="http://www.nfex.ru/Code/CSharpDownload/P17_PictureBox.zip">P17_PictureBox.zip( 103 k)</a>

==PictureBox Scroll Text==

<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 Form1 : Form {
Font textFont = new Font("Times New Roman", 24);
public Form1() {
this.panel1 = new System.Windows.Forms.Panel();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.panel1.SuspendLayout();
((System.ruponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
this.panel1.AutoScroll = true;
this.panel1.AutoScrollMinSize = new System.Drawing.Size(600, 400);
this.panel1.Controls.Add(this.pictureBox1);
this.panel1.Location = new System.Drawing.Point(13, 13);
this.panel1.Size = new System.Drawing.Size(267, 243);
this.pictureBox1.BackColor = System.Drawing.SystemColors.Window;
this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
this.pictureBox1.Location = new System.Drawing.Point(0, 0);
this.pictureBox1.Size = new System.Drawing.Size(600, 400);
this.pictureBox1.TabStop = false;
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 268);
this.Controls.Add(this.panel1);
this.Load += new System.EventHandler(this.Form1_Load);
this.panel1.ResumeLayout(false);
((System.ruponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
}
private void Form1_Load(object sender, EventArgs e) {
Bitmap b = new Bitmap(600, 600);
Graphics g = Graphics.FromImage(b);
g.FillRectangle(Brushes.White, new Rectangle(0, 0, b.Width, b.Height));
g.DrawString("Hello, World", textFont, Brushes.Black, 40, 40);
g.DrawString("Hello, World", textFont, Brushes.Red, 40, 240);
g.DrawString("Hello, World", textFont, Brushes.Blue, 350, 40);
g.DrawString("Hello, World", textFont, Brushes.Green, 350, 240);
pictureBox1.BackgroundImage = b;
pictureBox1.Size = b.Size;
}
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.PictureBox pictureBox1;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>

==PictureBox visible and invisible==

<source lang="csharp">
using System;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class ListText : Form {

private Button choose = new Button();
private ListBox animalList = new ListBox( );
private ListBox things = new ListBox( );
private TextBox text = new TextBox( );
private PictureBox picture = new PictureBox();
private PictureBox photo = new PictureBox();
private CheckBox show = new CheckBox();
private CheckBox author = new CheckBox();

private Bitmap moon = new Bitmap("winter.jpg");

public ListText( ) {
Text = "List Text";
choose.Text = "Choose";
show.Text = "Show a bitmap";
author.Text = "Show another bitmap";

Size = new Size(400, 300);
choose.Size = new Size(100,20);
text.Size = new Size(150,50);
photo.Size = new Size(100,100);

choose.Location = new Point(20,30);
animalList.Location = new Point(30 + choose.Width, 30);
things.Location = new Point(40 + choose.Width + animalList.Width, 30);
text.Location = new Point(20, 150);
photo.Location = new Point(40 + text.Width, 150);
picture.Location = new Point(60 + text.Width + photo.Width, 150);
show.Location = new Point(20,70);
author.Location = new Point(20,110);

animalList.SelectionMode = SelectionMode.MultiSimple;
things.SelectionMode = SelectionMode.One;
text.Multiline = true;
picture.Image = (Image)moon;
picture.Visible = false;
photo.Image = Image.FromFile("winter.jpg");
photo.Visible = false;
BackColor = Color.White;
choose.BackColor = Color.Pink;

animalList.Items.Add("A");
animalList.Items.Add("B");
animalList.Items.Add("C");
animalList.Items.Add("D");
animalList.Items.Add("E");
things.Items.Add("1");
things.Items.Add("2");
things.Items.Add("3");
things.Items.Add("4");

Controls.Add(animalList);
Controls.Add(things);
Controls.Add(choose);
Controls.Add(text);
Controls.Add(picture);
Controls.Add(show);
Controls.Add(author);
Controls.Add(photo);

choose.Click += new EventHandler(Choose_Click);
things.SelectedIndexChanged += new EventHandler(Things_Changed);
show.CheckedChanged += new EventHandler(Picture_Changed);
author.CheckedChanged += new EventHandler(Photo_Changed);
}

protected void Choose_Click(object sender, EventArgs e) {
for(int i = 0; i < animalList.SelectedItems.Count; i++){
Console.WriteLine(animalList.SelectedItems[i].ToString());
}
}

protected void Things_Changed(object sender, EventArgs e) {
text.Text = "You selected " + things.SelectedItem;
}

protected void Picture_Changed(Object sender, EventArgs e) {
if (show.Checked)
picture.Visible = true;
else
picture.Visible = false;
Invalidate();
}

protected void Photo_Changed(Object sender, EventArgs e) {
if (author.Checked)
photo.Visible = true;
else
photo.Visible = false;
Invalidate();
}
static void Main() {
Application.Run(new ListText());
}
}

</source>

==SizeMode in PictureBox==

<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.PictureBox pictureBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.PictureBox pictureBox2;
private System.Windows.Forms.PictureBox pictureBox3;
private System.Windows.Forms.PictureBox pictureBox4;
public Form1() {
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.button1 = new System.Windows.Forms.Button();
this.pictureBox2 = new System.Windows.Forms.PictureBox();
this.pictureBox3 = new System.Windows.Forms.PictureBox();
this.pictureBox4 = new System.Windows.Forms.PictureBox();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox1.Location = new System.Drawing.Point(8, 8);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(100, 70);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//
// button1
//
this.button1.Location = new System.Drawing.Point(232, 24);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(56, 23);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// pictureBox2
//
this.pictureBox2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox2.Location = new System.Drawing.Point(120, 8);
this.pictureBox2.Name = "pictureBox2";
this.pictureBox2.Size = new System.Drawing.Size(100, 70);
this.pictureBox2.TabIndex = 0;
this.pictureBox2.TabStop = false;
//
// pictureBox3
//
this.pictureBox3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox3.Location = new System.Drawing.Point(8, 88);
this.pictureBox3.Name = "pictureBox3";
this.pictureBox3.Size = new System.Drawing.Size(100, 70);
this.pictureBox3.TabIndex = 0;
this.pictureBox3.TabStop = false;
//
// pictureBox4
//
this.pictureBox4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox4.Location = new System.Drawing.Point(120, 88);
this.pictureBox4.Name = "pictureBox4";
this.pictureBox4.Size = new System.Drawing.Size(100, 70);
this.pictureBox4.TabIndex = 0;
this.pictureBox4.TabStop = false;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(376, 254);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this.pictureBox2,
this.pictureBox3,
this.pictureBox4,
this.pictureBox1});
this.ResumeLayout(false);
this.button1.Text = "Display";
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e) {
SetPictureBoxSizeMode();
}
private void SetPictureBoxSizeMode() {
string path = "3.BMP"; // Change the path if needed.
pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
pictureBox1.Image = Image.FromFile(path);
pictureBox2.SizeMode = PictureBoxSizeMode.Normal;
pictureBox2.Image = Image.FromFile(path);
pictureBox3.SizeMode = PictureBoxSizeMode.StretchImage;
pictureBox3.Image = Image.FromFile(path);
pictureBox4.SizeMode = PictureBoxSizeMode.AutoSize;
pictureBox4.Image = Image.FromFile(path);
}
}
</source>

==Subclass PictureBox==

<source lang="csharp">
using System;
using System.Drawing;
using System.Windows.Forms;

class PictureBoxPlusDemo: Form
{
public static void Main()
{
Application.Run(new PictureBoxPlusDemo());
}
public PictureBoxPlusDemo()
{
Text = "PictureBoxPlus Demo";

PictureBoxPlus picbox = new PictureBoxPlus();
picbox.Parent = this;
picbox.Dock = DockStyle.Fill;
picbox.Image = Image.FromFile("Color.jpg");
}
}
class PictureBoxPlus: PictureBox
{
protected override void OnPaint(PaintEventArgs pea)
{
ScaleImageIsotropically(pea.Graphics, Image,ClientRectangle);
}
void ScaleImageIsotropically(Graphics grfx, Image image,
Rectangle rect)
{
SizeF sizef =
new SizeF(image.Width / image.HorizontalResolution,
image.Height / image.VerticalResolution);

float fScale = Math.Min(rect.Width / sizef.Width,
rect.Height / sizef.Height);

sizef.Width *= fScale;
sizef.Height *= fScale;

grfx.DrawImage(image,
rect.X + (rect.Width - sizef.Width ) / 2,
rect.Y + (rect.Height - sizef.Height) / 2,
sizef.Width, sizef.Height);
}
}
</source>

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Csharp/C Sharp/GUI Windows Form/PictureBox - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия