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Leadtools.Controls Introduction (.NET)

Summary

The Leadtools.Controls assembly includes two classes that can be added to the Visual Studio toolbox as Windows Forms controls: the RasterPictureBox control and the ImageViewer control. Use these controls to view and manipulate images.

It also contains other classes, such as RasterClipboard and ImageViewerPanControl.

RasterPictureBox Class

The RasterPictureBox class is a PictureBox control used to display images. Use the control to display graphics from a bitmap, metafile, icon; JPEG, GIF, or PNG file (or any other image file format supported by LEADTOOLS). The following figure shows the Animation Demo using a RasterPictureBox to display an animated GIF file:

Note that the RasterPictureBox control can automatically animate multipage formats.

RasterPictureBox Features

Single-item display
Automatic and custom scroll modes
High-level animation of multipage formats, including GIF and TIFF

ImageViewer Class

The LEADTOOLS ImageViewer class is a control used to display one or more raster or SVG images with (optional) interactive UI operations. Use the class to create single-item applications like MS-Paint, or multiple-item applications like Adobe Acrobat. The following figure illustrates three of the layouts in which the ImageViewer can be used:

The LEADTOOLS Main Demo, using an ImageViewer instance in the single layout mode to view the main image
The LEADTOOLS Document Viewer, using an ImageViewer instance in the vertical layout mode to view image thumbnails
The LEADTOOLS Document Viewer, using another ImageViewer instance in the double layout mode to view the main content

ImageViewer Features

The ImageViewer class provides the following features:

Single- or multiple-item display. Each item has its own image data, size, and optional additional transformations
Built-in support for displaying and loading raster and SVG images and documents directly from disk files or URLs
Extensible layout system with built-in support for single, vertical, and horizontal layouts
Rich, built-in, fully customizable and extensible user-interface. Support for many interactions, including panning, zooming, magnifying, rubber banding, etc. Supports both mouse and touch input
Fully customizable appearance and position
Automatic and custom scroll modes
Owner draw rendering
Viewing options include infinite zooming in different size modes (fit, fit page, etc.), rotation at any angle, flip, reverse, color inversion, and low-level transformations
High-level item operations for hit-testing and navigation
Drag and drop between the ImageViewer and external sources such as the file system or other ImageViewer instances
Floater and region support
Virtualization mode for handling large numbers of images

Supported Environments

Leadtools.Controls Introduction (.NET)

Summary

RasterPictureBox Class

RasterPictureBox Features

ImageViewer Class

ImageViewer Features

See Also

Reference

Version History