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(). |
In/Out | pNumItems | Address of an unsigned long that specifies the array size on input, and receives the number of individual selection items on return. |
Out | pValue | Array of individual selection indexes. |
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 string type. |
P_E_BUFFER_TOO_SMALL | The array size is too small. In this case, the required size is returned in pNumItems. |
P_E_FAIL | Failed for other reasons. |