TreeView_Expand
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