OLE DB Programmer's Reference | |
Creates a new command.
HRESULT CreateCommand( IUnknown *pUnkOuter, REFIID riid, IUnknown **ppCommand);
Parameters
- pUnkOuter
- [in]
A pointer to the controlling IUnknown interface if the new command is being created as part of an aggregate. It is a null pointer if the command is not part of an aggregate. - riid
- [in]
The IID of the interface requested on the command. - ppCommand
- [out]
A pointer to memory in which to return the interface pointer on the newly created command.
Return Code
- S_OK
- The method succeeded.
- E_FAIL
- A provider-specific error occurred.
- E_INVALIDARG
- ppCommand was a null pointer.
- E_NOINTERFACE
- The command did not support the interface specified in riid.
- E_OUTOFMEMORY
- The provider did not have enough memory to create the command.
- DB_E_NOAGGREGATION
- pUnkOuter was not a null pointer, and the provider is an OLE DB 1.0 or 1.1 provider that does not support aggregation of the command object being created.
pUnkOuter was not a null pointer, and riid was not IID_IUnknown.
- DB_E_OBJECTOPEN
- The provider would have to open a new connection to support the operation, and DBPROP_MULTIPLECONNECTIONS is set to VARIANT_FALSE.
Comments
If the session is transacted, the command and any actions performed as a result of executing that command are within the scope of the transaction.
See Also
ICommand
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