User`s guide
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Query System—Function 20
This function determines the level and version of WHLLAPI under which your Windows HLLAPI
application is running.
Prerequisite Functions
None.
WinHLLAPI(QUERYSYSTEM,lpbyString,lpwLength,lpwReturnnCode)
Parameter Description
Data String Buffer for query data, must be defined for 35 bytes.
Data Length NA (length of 35 is implied).
PS Position NA
Parameter Description
Data String System statusa 35-byte string with the following format:
1 WinHLLAPI version number
2-3 WinHLLAPI level number
4-9 WinHLLAPI version date (mmddyy)
10-12 Reserved
13 Always “U”
14 Always “E”
15-16 WinHLLAPI product version number
17-18 WinHLLAPI product level number
19 Reserved
20-23 Reserved
24-27 Reserved
28-29 Reserved
30-31 Reserved
32 Reserved
33-35 Reserved
Code Description
WHLLOK The query completed successfully.
WHLLSYSERROR The function failed due to a system error.
Function Call
Call Parameters
Return Parameters
Return Codes