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TreeView_Expand info  Overview  Group

The TreeView_Expand macro expands or collapses the list of child items, if any, associated with the specified parent item. You can use this macro or explicitly send the TVM_EXPAND message.

BOOL TreeView_Expand(

    hwnd,

    hitem,

    flag

   );

Parameters

hwnd 
Handle to the tree-view control.
hitem
Handle to the parent item to expand or collapse.
flag
Action flag. This parameter can be one of the following values:

Value

Meaning

TVE_COLLAPSE

Collapses the list.

TVE_COLLAPSERESET

Collapses the list and removes the child items. Note that TVE_COLLAPSE must also be specified.

TVE_EXPAND

Expands the list.

TVE_TOGGLE

Collapses the list if it is currently expanded or expands it if it is currently collapsed.

Return Values

Returns TRUE if any change took place or FALSE otherwise.

Remarks

This macro does not send the TVN_ITEMEXPANDING and TVN_ITEMEXPANDED notification messages to the parent window.

See Also

TVM_EXPAND, TVN_ITEMEXPANDED, TVN_ITEMEXPANDING 

 

See also:


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