The TVM_SELECTITEM message selects the specified tree-view item, scrolls the item into view, or redraws the item in the style used to indicate the target of a drag-and-drop operation. You can send this message explicitly or by using the TreeView_Select, TreeView_SelectItem, or TreeView_SelectDropTarget macro.
TV_SELECTITEM
wParam = (WPARAM) flag;
lParam = (LPARAM) (HTREEITEM) hitem;
Parameters
flag
Action flag. This parameter can be one of the following values:
| Value | Meaning |
| TVGN_CARET | Sets the selection to the given item. |
| TVGN_DROPHILITE | Redraws the given item in the style used to indicate the target of a drag and drop operation. |
| TVGN_FIRSTVISIBLE | Scrolls the tree view vertically so that the given item is the first visible item. |
hitem
Handle to an item. If hitem is NULL, the selection is removed from the currently selected item, if any.
Return Values
Returns TRUE if successful or FALSE otherwise.
Remarks
If the TVGN_CARET value is specified, the parent window receives the TVN_SELCHANGING and TVN_SELCHANGED notification messages. Also, if the specified item is the child of a collapsed parent item, the parent's list of child items is expanded to reveal the specified item. In this case, the parent window receives the TVN_ITEMEXPANDING and TVN_ITEMEXPANDED notification messages.
Using the TreeView_SelectItem macro is equivalent to sending the TVM_SELECTITEM message with flag set to the TVGN_CARET value. Using the TreeView_SelectDropTarget macro is equivalent to sending the TVM_SELECTITEM message with flag set to the TVGN_DROPHILITE value. Using TreeView_SelectSetFirstVisible is equivalent to sending the TVM_SELECTITEM message with flag set to the TVGN_FIRSTVISIBLE value.
See Also
TreeView_Select, TreeView_SelectItem, or TreeView_SelectDropTarget, TVN_ITEMEXPANDED, TVN_ITEMEXPANDING, TVN_SELCHANGED, TVN_SELCHANGING