This property refers to the TWAIN major version number as retrieved by the Select method or the GetDataSourceInfo method.
[C++Builder] imagekitcontrolname->Scan->ProtocolMajor
[ = short ]
[Delphi] imagekitcontrolname.Scan.ProtocolMajor
[ = Smallint ]
Reference
The the major version number of the TWAIN specification supported by the scan device
Explanation
The ProtocolMajor property refers to the TWAIN major version number as retrieved by the Select method or the GetDataSourceInfo method.
Setting this value
This value cannot be set.
Retrieving this value
This value can be retrieved at run-time.