Csharp/C Sharp/GUI Windows Form/PictureBox

Содержание

1 Dragging Images
2 Load image to ImageBox
3 PictureBox Click event
4 PictureBox Demo
5 PictureBox Scroll Text
6 PictureBox visible and invisible
7 SizeMode in PictureBox
8 Subclass PictureBox

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

 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

  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>

Csharp/C Sharp/GUI Windows Form/PictureBox

Содержание

Dragging Images

Load image to ImageBox

PictureBox Click event

PictureBox Demo

PictureBox Scroll Text

PictureBox visible and invisible

SizeMode in PictureBox

Subclass PictureBox

Навигация

Персональные инструменты

Пространства имён

Варианты

Просмотры

Ещё

Поиск

Разделы

Инструменты

Навигация