In This Topic ▼

RasterImageListItem Constructor(RasterImage,int,string)

Summary

Initializes a new instance of the RasterImageListItem class with an image, its page and the text to be displayed.

Syntax

C++/CLI

C++

public RasterImageListItem( 
   RasterImage image, 
   int page, 
   string text 
)

public: 
RasterImageListItem(  
   RasterImage^ image, 
   int page, 
   String^ text 
)

public:  
   RasterImageListItem(RasterImage^ image, Int32 page, String^ text)

Parameters

image
A Leadtools.RasterImage object that specifies the image to be displayed in the item.

page
The page number (1-based) if the image has multiple pages.

text
The text to display for the item.

Remarks

If the image contains only one page, page must be 1.

The value of RasterImage.Page is not used to control the page number of the item to be viewed in this item. Instead, use the page parameter. This allow the same Leadtools.RasterImage object to be used in multiple items while setting the Page property to different values.

Example

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
 
class MyForm1 : Form 
{ 
   public RasterImageList imageList; 
   public MyForm1(string title) 
   { 
      Text = title; 
 
      // Set the size of the form 
      Size = new Size(400, 200); 
 
      // Create a new RasterImageList control. 
      imageList = new RasterImageList(); 
      imageList.Bounds = new Rectangle(new Point(0, 0), Size); 
 
      imageList.Sorting = SortOrder.Ascending; 
      imageList.BorderStyle = BorderStyle.None; 
      imageList.DoubleBuffer = true; 
      imageList.Dock = DockStyle.Fill; 
      RasterPaintProperties paintProperties = imageList.PaintProperties; 
      paintProperties.PaintDisplayMode = RasterPaintDisplayModeFlags.Bicubic; 
      imageList.PaintProperties = paintProperties; 
      imageList.EnableKeyboard = true; 
      imageList.UseDpi = true; 
 
      // Add a handler to the PaintBackground event 
      imageList.PaintBackground += new PaintEventHandler(rasterImageList_PaintBackground); 
 
      RasterCodecs codecs = new RasterCodecs(); 
 
      // Create three items 
      string imagesPath = LEAD_VARS.ImagesDir; 
 
      for (int i = 0; i < 3; i++) 
      { 
         // Load the image 
         int index = i + 1; 
         string imageFileName = Path.Combine(imagesPath, @"ImageProcessingDemo\Image" + index.ToString() + ".cmp"); 
         RasterImage image = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1); 
         RasterImageListItem item = new RasterImageListItem(image, 1, "Item" + index.ToString()); 
 
         // Select the first item 
         if (i == 0) 
            item.Selected = true; 
 
         // Add the item to the image list 
         imageList.Items.Add(item); 
      } 
 
      // Add the RasterImageList to the control collection. 
      Controls.Add(imageList); 
   } 
 
 
   private void rasterImageList_PaintBackground(object sender, PaintEventArgs e) 
   { 
      // Get the image list control 
      RasterImageList imageList = sender as RasterImageList; 
 
      // Fill the background with a gradient brush 
      Rectangle rc = imageList.ClientRectangle; 
 
      Brush b = new LinearGradientBrush( 
         rc, 
         Color.Bisque, 
         Color.White, 
         LinearGradientMode.Vertical); 
      e.Graphics.FillRectangle(b, rc); 
      b.Dispose(); 
   } 
 
} 
 
public void RasterImageList_RasterImageList(string title) 
{ 
   MyForm1 form = new MyForm1(title); 
   form.ShowDialog(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms