[Overview][Constants][Types][Classes][Procedures and functions][Index] | Reference for unit 'ComCtrls' (#lcl)

# Reference for unit 'ComCtrls': Constants

`CN_DROPDOWNCLOSED` |  | Control notification message constant.
`DefaultMultiSelectStyle` |  | Default value(s) used for the MultiSelectStyle property in TCustomTreeView.
`DefaultTreeNodeExpandSignSize` |  | Default size used for expand and collapse indicators in TCustomTreeView.
`DefaultTreeNodeHeight` |  | Default value used as the height for a TTreeNode instance.
`DefaultTreeViewOptions` |  | A set of TreeViewOptions which are set be default.
`LCLStreamID` |  | A constant with the identifier for a LCL stream.
`TCN_First` |  | Represents the first tab control notification message.
`TCN_SELCHANGE` |  | Represents the selection changed notification message for tab controls.
`TCN_SELCHANGING` |  | Represents the selection changing notification message for tab controls.