User`s guide

l Contents
Query Field Attribute—Function 14
This function returns the attribute byte of the field containing the specified position in the Host session
presentation space.
Prerequisite Functions
Connect Presentation Space (function 1).
WinHLLAPI(QUERYFIELDATTRIBUTE,lpbyString,lpwLength,
lpwReturnnCode)
Parameter Description
Data String NA
Data Length NA
PS Position A position in the Host session presentation space that is
within the field for which you want the attribute byte
returned.
Parameter Description
Data Length The attribute value if the screen is formatted. Zero if the
screen is not formatted.
Code Description
WHLLOK Field attribute found successfully.
WHLLNOTCONNECTED Your Windows HLLAPI application is not currently
connected to a Host session.
WHLLPOSITIONERROR Invalid value specified for PS Position.
WHLLSYSERROR The function failed due to a system error.
WHLLNOFIELD Field attribute not found due to unformatted Host session
presentation space.
Position in the Host session presentation space is determined by starting in the upper left corner of the
screen display (row 1, column 1). At the end of each screen display row, the next Host session
presentation space position is column 1 of the following screen display row. This process continues
until the end of the Host session presentation space (screen display) is reached.
You must examine the attribute byte to determine all of the current field attributes. See Appendix B -
Attributes for descriptions of field attributes
Function Call
Call Parameters
Return Parameters
Return Codes
Remarks