PvGetCategoryListCount()
Retrieves the number of categories on the engine specified by the current connection. This number can then be used to allocate an array to pass to
PvGetCategoryList().
Header File: config.h (See also
Header Files)
Function First Available In Library: w3dbav78.dll (Windows), libpsqldti.so (Linux), libpsqldti.dylib (macOS) (See also
Link Libraries)
Syntax
BTI_SINT PvGetCategoryListCount(
BTI_LONG hConnection,
BTI_ULONG_PTR pListCount);
Arguments
In | hConnection | Connection handle that identifies the server. Connection handles are obtained with the
PvConnectServer() function. |
Out | pListCount | Address of an unsigned long containing the number of categories. |
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_FAIL | Failed for other reasons. |
Remarks
The following precondition must be met:
•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