User`s guide

Contents liii
Bytes 12-13 Number of rows in the Host session
presentation space. This is a binary
number, not ASCII. If the session type is
“E” or “G” (printers), the value is binary
zero.
Parameter Description
Bytes 14-15 Number of columns in the Host session
presentation space. This is a binary
number, not ASCII. If the session type is
“E” or “G” (printers), the value is binary
zero.
Bytes 16-17 Host code page number, expressed as a
binary number.
Byte 18 Reserved.
Code Description
WHLLOK The requested session status is returned successfully.
WHLLNOTCONNECTED The requested session is invalid.
WHLLPARAMETERERROR Data Length is invalid.
WHLLSYSERROR The function failed due to a system error.
The rows and columns returned in Data String (positions 12-13 and 14-15) are the number of rows
and columns that correspond to the Model type.
Return Codes
Remarks