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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| commctrl.h
| Unicode
| No
| Platform Notes
| None
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TVM_EXPAND
The TVM_EXPAND message expands or collapses the list of child items, if any,
associated with the specified parent item. You can send this message explicitly
or by using the TreeView_Expand macro.
TVM_EXPAND
wParam = (WPARAM) (UINT) flag;
lParam = (LPARAM) (HTREEITEM) hitem;
Parameters
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.
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hitem
Handle to the parent item to expand or collapse.
Return Values
Returns TRUE if any change took place or FALSE otherwise.
Remarks
This message does not send the TVN_ITEMEXPANDING and TVN_ITEMEXPANDED
notification messages to the parent window.
See Also
TreeView_Expand, TVN_ITEMEXPANDED, TVN_ITEMEXPANDING
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