GdTwain Pro SDK Twain ActiveX Control

TWAIN ActiveX control for developers to display and acquire images from TWAIN devices such as scanners, cameras, capture cards GdTwain Pro OCX is a TWAIN ActiveX control for developers to display and acquire images from TWAIN devices such as scanners, cameras and capture cards. Thanks to GdTwain Pro you will be able to fully control the process of aquiring an image and display the output image into a High Quality Viewer Control.

You can use an automatic document feeder, use the scanner interface, apply image filters and effects, control all the capabilities of a Twain device like brightness, contrast, saturation, gamma, color depth, auto-deskew, auto border removal and many others options defined into the TWAIN 1.9 Specification.

Here are some key features of "GdTwain Pro SDK Twain ActiveX Control":

TWAIN - Twain acquisition & Image processing SDK :

Very easy to use and fast integration within your application

Advanced image processing (auto border removal, adjust brightness / contrast / saturation / gamma, rotation...)

Acquire an image to handle, to file, (multipage Tiff support), to clipboard, byte array, HBitmap, StdPicture...

Support lzw, ccitt3, ccitt4, rle and Jpeg compression

Support for 1bit, 4bits, 8bits, 16bits, 24bits, 32bits, 48bits and 64bits color depth

Image enhancement functions

Convert any color depth to any color depth, from 1-bit to 64-bit

Many color quantization and reduction algorithms

Advanced Text processing: add text with semi transparency effect, draw rotated text...

Adjust the twain device image resolution (DPI)

Defines the twain device capture area

Defines the twain device brightness and contrast

Enable / disable ADF feeder

Enable / disable AutoScan mode

Enable / disable duplex scanning

Enable / disable Automatic Deskew

Enable / disable Automatic Rotation

Enable / disable Automatic Border Detection

Enable / disable Automatic Brightness

Select the twain device pixel type, B/W Color, Gray color, RGB color, CMYK color...

Provides high and low level API

GdTwain Pro ActiveX control uses the last TWAIN 1.9 specifications.

GdViewer - Image Viewer Control :

Image bitmap and vectorial viewer (very high quality viewer class with many differents view modes)

Load and print tif, multipage tiff, ico, jpeg, png, wmf, emf, gif, animated gif, dib, pcx, pnm, fax image files

PDF Viewer

Multipage Tiff reading, you can change page easly

Display big image file

Read binary data types like IStream, IUnknown

Load image from URL

Multiple image scaling algorithms (Antialiasing, Bicubic and Nearest Neighbor Interpolation ...)

Support lzw, ccitt3, ccitt4, rle and Jpeg compression

Support for 1bit, 4bits, 8bits, 16bits, 24bits, 32bits, 48bits and 64bits pallets color

Import image from Clipboard, StdPicture, IPicture, HBitmap, DIB, gdiplus handle...

Advanced rotations 90, 180, 270, 360, Flip X, Flip Y

Advanced and optimized printing features: Print range of pages from a multi-page file, Print multi-page images in single print jobs, Fit image to paper size...

Area processing

User define display area

Animated Gif Viewer

Built in timer with TimerTick event

Advanced scrollbar and autosize features

Aspect Ratio Control

Right click pop up menu, including tools, selection, zoom... *

Built in tools including hand tool, pan and zoom, rectangle selection

Move / Scroll the image by mouse drag

Zoom enhance, zoom by height, by width, fit to page...

User define Zoom and user define area zoom

Keyboard and Mouse Events

Change image zoom with mouse whell

Smooth Scrolling

Save and restore the specifies position of image (Image MAP system capability)

GdViewerCnt: Image viewer container class (like a vb picturebox, can contain other controls placed on it)


Supported input image file formats:

BMP, DIB, RLE (standard Windows Bitmap file format).

ICO (Icone file format).

EMF (Enhanced Windows Metafile format).

GIF, ANIMATED GIF, Interlaced GIF (Graphics Interchange file format).

JPEG, JPG, JPE, JFIF (Joint Photographic Expert Group file format).

PNG (Portable Network Graphics file format).

TIFF, TIF (Single & Multipage Tagged-Image File format).

WMF (standard Windows Metafile format).

PNM, PPM, PBM, PGM, RPPM, RPGM, RPBM (Portable Any Map).

PCX (PC Paintbrush File format).

PDF (Single & Multipage Portable Document Format).

Supported export file formats:

BMP (standard Windows Bitmap file format).

ICO (Icone file format).

GIF, Interlaced GIF (Graphics Interchange file format).

JPEG (Joint Photographic Expert Group file format).

PNG (Portable Network Graphics file format).

TIFF, TIF (Single & Multipage Tagged-Image File format).

PDF (Portable Document File).

PNM (Portable Any Map).

Supported TIFF file compressions:

CCITT Group 3 fax encoding.

CCITT Group 4 fax encoding.

CCITT Modified Huffman RLE.

LZW compression.

Packbits - Macintosh RLE compression.