TwainMBS.TWRC_CANCEL = 3

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Operation has been canceled.

TwainMBS.TWRC_CHECKSTATUS = 2

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with Capability and ImageLayout. Operation failed to completely perform the desired operation. For example, setting Brightness to 3 when its range is -1000 to 1000 with a step of 200. The data source may opt to set the value to 0 and return this status.
The application should confirm its last setting, if it depends on getting the exact value it requested.

TwainMBS.TWRC_DATANOTAVAILABLE = 9

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with extended ImageInfo. There is no data available for the requested item.
Scanning may continue. The decision to continue with scanning is at the discretion of the application, depending on which field reported this status.

TwainMBS.TWRC_DSEVENT = 4

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with DAT_EVENT. The data source processed the event.
The application must not take any further action on this message.

TwainMBS.TWRC_ENDOFLIST = 7

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with DAT_IDENTITY and DAT_FILESYSTEM.
There are no more items to enumerate in this list. If a call is needed to close the list, it must be called next.

TwainMBS.TWRC_FAILURE = 1

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

May be returned by any operation. An error has occurred.
The application must call status functions, and refer to the condition code for more information.

TwainMBS.TWRC_INFONOTSUPPORTED = 8

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with DAT_EXTIMAGEINFO. The requested TWEI_ data is either not supported by this data source, or is not supported for this particular image.
Scanning may continue. The decision to continue with scanning is at the discretion of the application, depending on which field reported this status.

TwainMBS.TWRC_NOTDSEVENT = 5

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with DAT_EVENT. The data source did not process the event.
The application passes the message to its own dialogs.

TwainMBS.TWRC_SUCCESS = 0

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Operation was successful.
The application continues as normal.

TwainMBS.TWRC_XFERDONE = 6

Type	Topic	Plugin	Version
const	Twain	MBS Picture Plugin	12.2

One of the error codes.

Intended for use with the Image Transfer operations. The image has been fully transferred.
The application must be in state 7. It should call GetImageInfo, if it needs to collect metadata for this image.