53   pItem = pItem->pPrevious;  in GetFirstSiblingWidget()
54   while (pItem && pItem->pPrevious)  in GetFirstSiblingWidget()
55     pItem = pItem->pPrevious;  in GetFirstSiblingWidget()
61   return pItem && pItem->pPrevious ? pItem->pPrevious->pWidget : nullptr;  in GetPriorSiblingWidget()
106       if (pChild->pPrevious)  in AppendWidget()
107         pChild->pPrevious->pNext = pChild->pNext;  in AppendWidget()
109         pChild->pNext->pPrevious = pChild->pPrevious;  in AppendWidget()
114       pItem->pPrevious = nullptr;  in AppendWidget()
130     pItem->pPrevious = pChild;  in AppendWidget()
133     pItem->pPrevious = nullptr;  in AppendWidget()
172     if (pItem->pPrevious)  in InsertWidget()
173       pItem->pPrevious->pNext = pItem->pNext;  in InsertWidget()
175       pItem->pNext->pPrevious = pItem->pPrevious;  in InsertWidget()
187   if (pItem->pPrevious)  in RemoveWidget()
188     pItem->pPrevious->pNext = pItem->pNext;  in RemoveWidget()
190     pItem->pNext->pPrevious = pItem->pPrevious;  in RemoveWidget()
228     if (pItem->pPrevious)  in SetParent()
229       pItem->pPrevious->pNext = pItem->pNext;  in SetParent()
231       pItem->pNext->pPrevious = pItem->pPrevious;  in SetParent()
236     pItem->pPrevious = nullptr;  in SetParent()
381       pPrevious(nullptr),  in Item()