Path::size_type Path::components() const
{
size_type count = 0;
if ( myBackend != 0 )
{
::LPCITEMIDLIST current = myBackend;
while ( current->mkid.cb > 0 ) {
++count, current = ILNext(current);
}
}
return (count);
}
HRESULT GetCurrent(REFIID riid, void **ppv)
{
*ppv = NULL;
if (SUCCEEDED(_hr))
{
// Create the childID by truncating _pidlRel temporarily
PUIDLIST_RELATIVE pidlNext = ILNext(_pidlRel);
const WORD cbSave = pidlNext->mkid.cb; // Save old cb
pidlNext->mkid.cb = 0; // Make _pidlRel a child
_hr = SHCreateItemWithParent(NULL, _psfCur, (PCUITEMID_CHILD)_pidlRel, riid, ppv);
pidlNext->mkid.cb = cbSave; // Restore old cb
}
return _hr;
}
bool MoveNext()
{
bool fMoreItems = false;
if (SUCCEEDED(_hr))
{
if (NULL == _pidlRel)
{
fMoreItems = true;
_pidlRel = _pidlFull; // First item - Might be empty if it is the desktop
}
else if (!ILIsEmpty(_pidlRel))
{
PCUITEMID_CHILD pidlChild = (PCUITEMID_CHILD)_pidlRel; // Save the current segment for binding
_pidlRel = ILNext(_pidlRel);
// If we are not at the end setup for the next iteration
if (!ILIsEmpty(_pidlRel))
{
const WORD cbSave = _pidlRel->mkid.cb; // Avoid cloning for the child by truncating temporarily
_pidlRel->mkid.cb = 0; // Make this a child
IShellFolder *psfNew;
_hr = _psfCur->BindToObject(pidlChild, NULL, IID_PPV_ARGS(&psfNew));
if (SUCCEEDED(_hr))
{
_psfCur->Release();
_psfCur = psfNew; // Transfer ownership
fMoreItems = true;
}
_pidlRel->mkid.cb = cbSave; // Restore previous ID size
}
}
}
return fMoreItems;
}
Path::iterator Path::end () const
{
return (iterator(ILNext(ILFindLastID(myBackend))));
}
