How to Work with the Container

When getting or setting capability information, it may be necessary to create a container for the capability. The structure of the container depends on the type of information in the container. LEADTOOLS supports the following types of TWAIN containers:

TW_ARRAY

TW_ENUMERATION

TW_ONEVALUE

TW_RANGE

For more information on these container types, refer to the TWAIN 1.9 Specification, available at www.twain.org.

The LEADTOOLS TWAIN toolkit provides a class for each container type and the TW_CAPABILITY structure.

The TwainCapabilityBase class represents the TW_CAPABILITY structure. This interface has two properties that are used in setting and getting the capabilities:

The TwainOneValueCapability class represents a container of type TW_ONEVALUE. This interface has the following properties:

The TwainEnumerationCapability class represents a container of type TW_ENUMERATION. This interface has the following properties:

The TwainRangeCapability class represents a container of type TW_RANGE. This interface has the following properties:

The TwainArrayCapability class represents a container of type TW_ARRAY. This interface has the following properties:

The TwainFrame class represents a structure of type TW_FRAME. It contains information about the area of the image to acquire. This interface has the following properties:

Help Version 20.0.2018.3.2
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