| Microsoft DirectX 8.1 (C++) |
The Invoke method provides access to properties and methods exposed by an object.
Syntax
HRESULT Invoke(
DISPID dispidMember,
REFIID riid,
LCID lcid,
WORD wFlags,
DISPPARAMS *pdispparams,
VARIANT *pvarResult,
EXCEPINFO *pexcepinfo,
UINT *puArgErr
);
Parameters
dispidMember
Identifier of the member. Use CBasicAudio::GetIDsOfNames or the object's documentation to obtain the dispatch identifier.
riid
Reserved for future use. Must be IID_NULL.
lcid
Locale context in which to interpret arguments.
wFlags
Flags describing the context of the CBasicAudio::Invoke call.
pdispparams
Pointer to a DISPPARAMS structure containing an array of arguments, an array of argument dispatch IDs for named arguments, and counts for number of elements in the arrays.
pvarResult
Pointer to where the result is to be stored, or NULL if the caller expects no result.
pexcepinfo
Pointer to a structure containing exception information.
puArgErr
Pointer to the index of the first argument, within the rgvarg array, that has an error. The rgvarg array is a member of the DISPPARAMS structure.
Return Value
Returns DISP_E_UNKNOWNINTERFACE if riid is not IID_NULL. Returns one of the error codes from CBasicAudio::GetTypeInfo if the call fails. Otherwise, returns the HRESULT from the call to IDispatch::Invoke.
See Also