CTreeCtrl::GetItemImage

Статья
10/16/2008

Each item in a tree view control can have a pair of bitmapped images associated with it.

BOOL GetItemImage(
   HTREEITEM hItem,
   int& nImage,
   int& nSelectedImage 
) const;

Параметры

hItem
The handle of the item whose image is to be retrieved.
nImage
An integer that receives the index of the item's image within the tree view control's image list.
nSelectedImage
An integer that receives the index of the item's selected image within the tree view control's image list.

Возвращаемое значение

Nonzero if successful; otherwise 0.

Заметки

The images appear on the left side of an item's label. One image is displayed when the item is selected, and the other is displayed when the item is not selected. For example, an item might display an open folder when it is selected and a closed folder when it is not selected.

Call this function to retrieve the index of the item's image and its selected image within the tree view control's image list.

Пример

HTREEITEM hmyItem = m_TreeCtrl.GetSelectedItem();

// If the selected image is the same as the nonselected image
// then make the selected image one more than the nonselected image.
if (m_TreeCtrl.ItemHasChildren(hmyItem))
{
   HTREEITEM hItem = m_TreeCtrl.GetChildItem(hmyItem);
   int nImage, nSelectedImage;

   while (hItem != NULL)
   {
      m_TreeCtrl.GetItemImage(hItem, nImage, nSelectedImage);

      if (nImage == nSelectedImage)
      {
         m_TreeCtrl.SetItemImage(hItem, nImage, nImage + 1);
      }

      hItem = m_TreeCtrl.GetNextSiblingItem(hItem);
   }
}