PvGetLongValue()

PvGetLongValue()

Retrieves the value for a long integer type setting, from the data source specified by whichData.

Header File: config.h (See also Header Files)

Function First Available In Library: w3dbav75.dll (Windows), libpsqldti.so (Linux), libpsqldti.dylib (OS X) (See also Link Libraries)

BTI_SINT PvGetLongValue(

BTI_LONG hConnection,

BTI_ULONG settingID,

BTI_LONG_PTR pValue,

BTI_SINT whichData);


In	hConnection	Connection handle that identifies the server. Connection handles are obtained with the PvConnectServer() function.
In	settingID	Unique identifier for the setting. A list of settings can be obtained from PvGetSettingList().
Out	pValue	Address of a long integer variable that receives the setting value.
In	whichData	Flag to indicate which value is requested: PVDATA_DEFAULT returns default value. PVDATA_CURRENT returns current value


P_OK	The operation was successful.
P_E_INVALID_HANDLE	Invalid connection handle.
P_E_NULL_PTR	Call with NULL pointer
P_E_INVALID_DATA_TYPE	The requested setting is not of long integer type.
P_E_FAIL	Failed for other reasons.

The following preconditions must be met:

•

DTI session started by calling PvStart().

•

Connection established by PvConnectServer() or if you are performing the operation on a local machine, P_LOCAL_DB_CONNECTION may be used as the connection handle.

To obtain the minimum and maximum values that the setting can accept, use the PvGetValueLimit() function.

PvStart()
PvConnectServer()
PvGetCategoryList()
PvGetSettingList()
PvGetValueLimit()
PvDisconnect()
PvStop()