Specifications

DDE reference
Gallagher & Robertson Glink: API reference manual 185
The additional error codes are only sent in the case
when the state is 1. These error codes consist of two
values, a major code and a minor code. The actual
values of the major and minor code are contained in
the UVTI.H file; for a full list consult that file. A
summary of those that will normally be returned by
Glink follows here:
Major Minor
1 (file) 0 (file or path not found)
1 (file write-protected or read-only)
5 (invalid drive specification)
6 (access denied)
9 (I/O error reading or writing file)
10 (unable to open file)
3 (line) 0 (line was disconnected)
5 (protocol) 0 (initial handshake failed)
1 (max retry count exceeded)
2 (bad packet format)
10 (op) 0 (operator aborted transfer)
13 (none) 0 (unknown)