Developer Reference : Platform Management : Distributed Tuning Interface (DTI) Guide : Distributed Tuning Interface Reference : PvCountSelectionItems()
 
PvCountSelectionItems()
Count the number of selection items for a setting of types (PVSETTING_SINGLE_SEL or PVSETTING_MULTI_SEL).
Header File: config.h (See also Header Files)
Function First Available In Library: w3dbav75.dll (Windows), libpsqldti.so (Linux), libpsqldti.dylib (macOS) (See also Link Libraries)
Syntax
BTI_SINT PvCountSelectionItems(
   BTI_LONG           hConnection,
   BTI_ULONG          settingID,
   BTI_ULONG_PTR      pNumItems);
Arguments
 
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 categories can be obtained with the PvGetCategoryList() function. A list of settings for a particular category can be obtained from PvGetSettingList().
Out
pNumItems
Address of an unsigned long that receives the number of selection items.
Return Values
 
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 selection type.
P_E_FAIL
Failed for other reasons.
Remarks
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.
See Also
PvStart()
PvConnectServer()
PvGetCategoryList()
PvGetSettingList()
PvDisconnect()
PvStop()