Returns the length of the extended data associated with the specified Presentation Context.
Presentation ID of the Presentation Context from which to retrieve the length of the extended data. The presentation ID provides information about both the class type of the data and the transfer syntax to use when transferring the data. It also identifies a specific Presentation Context within an Associate.
The length of the extended data of the specified Presentation Context of the DICOM Associate.
To retrieve the extended data associated with a Presentation Context, call LDicomAssociate::GetExtended.
To set extended data associated with a Presentation Context, call LDicomAssociate::SetExtended.
For an example, refer to LDicomAssociate::IsRoleSelect.
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