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Chapter 34 Data Offsets

25-3

25.2 AL_GetDataOffsetList

Prototype C\C++

ERRNUM AL_GetDataOffsetList(LHLD lhld, LPDATAOFFSETLIST

lpDataOffsetlist);

Visual Basic for Windows

Function AL_GetDataOffsetList(ByVal lhld As Long, lpDataOffsetlist As

DATAOFFSETLIST) As Long

LHLD lhld handle of the LDSD

LPCHANLIST lpchanlist destination address of the user channel list structure

The AL_GetDataOffsetList function retrieves to the current LDSD DataOffsetlist settings. The

DataOffsetlisting is comprised of a channel number and DATAOFFSET type. The DATAOFFSET list

may contain Channel/DataOffset settings that are not currently set in the channel listing itself. The

DataOffset ID setting in the array can be obtained from the capability file.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

lpchanlist Specifies a 32 bit far pointer to a DATAOFFSET information structure. This

structure has been predefined in the ADLIB include file and is defined as

follows:

typedef struct tagDATAOFFSETLIST

{

long lType; /* 0 = Not Defined */

/* 1 = Use string list */

/* 2 = Use array of ints */

char achDataOffsetList[MAX_DATAOFFSET_STRLEN];

long lNumElements;

long alDataOffsetList[MAX_DATAOFFSET_LIST_ARRAYLEN];

}DATAOFFSET

typedef DATAOFFSET FAR * LPDATAOFFSETLIST;

Returns:

On success ERRNUM is set to 1 and the lpDataOffsetlist structure is filled with the device's DataOffsetlist

settings, otherwise ERRNUM contains the last error code that occurred during the call and the

lpDataOffsetlist structure may contain invalid information.

Related Functions:

AL_SetDataOffsetList

AL_SetDataOffsetGlobal

Examples:

• string “0(BIP),1(UNI),2(BIP),3(BIP),4(BIP),5(BIP),6(UNI),7(UNI)”

• array {0,1800, 1,1801, 2, 1800, 3, 1800, 4, 1800, 5, 1800, 6, 1801, 7, 1801};

1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 190 191

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Measurement-computing ADLIB WIN Manuel d'utilisateur Page 113