lrc_DispObject_by_ref_from_variant

Extracts a pointer to the IDispatch interface from a reference within a variant.

IDispatch* lrc_DispObject_by_ref_from_variant( VARIANT var );

The lrc_DispObject_by_ref_from_variant function extracts an IDispatch interface type pointer from a pointer to a variant.

Return Values

lrc Return Values

Parameterization

You cannot use standard parameterization for any arguments in this function.

Example

This example extracts the IDispatch interface IDispatch_0 from the variant reference var.

//Build variant
IUnknown * IUnknown_0 = 0;
IDispatch * IDispatch_0 = 0;
{
    GUID pClsid = lrc_GUID("ADODB.Recordset.2.1");
    IUnknown * pUnkOuter = (IUnknown*)NULL;
    unsigned long dwClsContext = lrc_ulong("7");
    GUID riid = IID_IUnknown;
    lrc_CoCreateInstance(&pClsid, pUnkOuter, dwClsContext, &riid, (void**)&IUnknown_0, CHECK_HRES);
}

{
    GUID riid = IID_IDispatch;
    lrc_IUnknown_QueryInterface(IUnknown_0, &riid, (void**)&IDispatch_0, CHECK_HRES);
}

//Extract IDispatch Interface
VARIANT var = lrc_variant_DispObject_by_ref((IDispatch*)IDispatch_0);
IDispatch_0= (IDispatch*)lrc_DispObject_by_ref_from_variant(var);