| Class | Description |
 | AcquireModalRequestParams | Request to a web service. Contains parameters, which must be sent to a web service when image is acquired from TWAIN device. |
 | AcquireModalResponseParams | Response from a web service (controller/handler). Contains information about one step of modal image acquisition. |
 | CreateTwainSessionRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for creating TWAIN session. |
 | DeviceImageLayoutRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for manipulating the image layout of TWAIN device. |
 | DeviceImageLayoutResponseParams | Response from a web service (controller/handler). Contains information about the image layout rectangle of document/page/frame of TWAIN device. |
 | DeviceRequestParamsBase | Request to a web service. Contains parameters, which must be sent to a web service for working with TWAIN device. |
 | GetDeviceCapabilitiesRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for getting information about TWAIN device capabilities. |
 | GetDeviceCapabilitiesResponseParams | Response from a web service (controller/handler). Contains information about TWAIN device capabilities. |
 | GetDeviceCapabilityRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for getting information about TWAIN device capability. |
 | GetDeviceCapabilityResponseParams | Response from a web service (controller/handler). Contains information about TWAIN device capability. |
 | GetSupportedDeviceCapabilitiesRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for getting information about capabilities supported by TWAIN device. |
 | OpenDeviceManagerRequestParam | Request to a web service. Contains parameters, which must be sent to a web service for opening TWAIN device manager. |
 | OpenDeviceRequestParam | Request to a web service. Contains parameters, which must be sent to a web service for opening TWAIN device. |
 | OpenDeviceResponseParams | Response from a web service (controller/handler). Contains information about opened TWAIN device. |
 | SetDeviceCapabilityRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for setting value of TWAIN device capability. |
 | SetDeviceImageLayoutRequestParams | Request to a web service. Contains parameters, which must be sent to a web service for changing the image layout rectangle of document/page/frame of TWAIN device. |
 | TwainDevicesInfoResponseParams | Response from a web service (controller/handler). Contains information about devices instaled in the system. |
 | VintasoftTwainWebService | A platform-independent web service that handles HTTP requests from clients and allows to manipulate TWAIN devices. |
 | WebTwainDeviceCapability | Contains information about TWAIN device capability. |
 | WebTwainDeviceCapabilityValue | Contains information about value of TWAIN device capability. |
 | WebTwainDeviceInfo | Contains information about TWAIN device. |
 | WebTwainRequestParamBase | Request to a web service. Contains parameters, which must be sent to a web service for working with TWAIN device manager and TWAIN device. |
 | WebTwainResponseParamBase | Response from a web service (controller/handler). Contains information about TWAIN session. |