IIterableConcept::GetIterator method (dbgmodel.h)

The GetIterator method on the iterable concept returns an iterator interface which can be used to iterate the object. The returned iterator must remember the context object that was passed to the GetIterator method. It will not be passed to methods on the iterator itself.

Syntax

HRESULT GetIterator(
  IModelObject   *contextObject,
  IModelIterator **iterator
);

Parameters

contextObject

The instance (this pointer) for which to acquire an iterator.

iterator

An implementation of IModelIterator which iterates the instance object is returned here.

Return value

This method returns HRESULT which indicates success or failure.

Remarks

Example Implementation:

IFACEMETHOD(GetIterator)(_In_ IModelObject *pContextObject, 
                         _COM_Outptr_ IModelIterator **ppIterator)
{
    HRESULT hr = S_OK:
    *ppIterator = nullptr;

    // The iterator is not going to be passed the context object any more.  
    // If it needs this (to access fields for iteration, etc...), it must
    // capture that in its own state.
    ComPtr<MyObjectIterator> spIter;
    hr = Microsoft::WRL::MakeAndInitialize<MyObjectIterator>(&spIter, pContextObject);
    if (SUCCEEDED(hr))
    {
        *ppIterator = spIter.Detach();
    }
    return hr;
}

Requirements

See also

IIterableConcept interface