CTreeCtrl::DeleteItem

發行項
06/10/2015

呼叫這個函式會刪除從樹狀檢視控制項中的項目。

BOOL DeleteItem( 
   HTREEITEM hItem 
);

參數

hItem
要刪除之樹狀目錄的控制代碼。如果 hitem 有 TVI_ROOT 值，將所有項目從樹狀檢視控制項刪除。

傳回值

如果不是零，則成功，則為 0。

範例

// Look at all of the root-level items
HTREEITEM hCurrent = m_TreeCtrl.GetChildItem(TVI_ROOT);
while (hCurrent != NULL) 
{
   // Get the text for the item. Notice we use TVIF_TEXT because 
   // we want to retrieve only the text, but also specify TVIF_HANDLE 
   // because we're getting the item by its handle.
   TVITEM item;
   TCHAR szText[1024];
   item.hItem = hCurrent;
   item.mask = TVIF_TEXT | TVIF_HANDLE;
   item.pszText = szText;
   item.cchTextMax = 1024;

   BOOL bWorked = m_TreeCtrl.GetItem(&item);

   // Try to get the next item
   hCurrent = m_TreeCtrl.GetNextItem(hCurrent, TVGN_NEXT);

   // If we successfuly retrieved an item, and the item's text 
   // contains a lowercase letter 'e', delete the item. 
   if (bWorked && _tcschr(item.pszText, 'e'))
      m_TreeCtrl.DeleteItem(item.hItem);
}