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

# Reference for unit 'StdCtrls': Classes

`TButton`
`TButtonActionLink` |  | TButtonActionLink - provides a link between a button and its corresponding action
`TButtonControl` |  | TButtonControl : ancestor class for several Button (including Radio Button) and Check Box classes
`TCheckBox` |  | TCheckBox - a small box which can contain a check mark to indicate that it has been selected by a mouse click
`TComboBox` |  | TComboBox - a simple combination of text box for free text entry, and a drop-down list allowing one of several options to be chosen.
`TCustomButton` |  | TCustomButton - the base class for TButton and TBitBtn
`TCustomCheckBox` |  | TCustomCheckBox is the ancestor of all check-box components.
`TCustomComboBox` |  | TCustomComboBox - the base class from which TComboBox is derived
`TCustomEdit` |  | TCustomEdit : the base type from which the TEdit Box is derived.
`TCustomGroupBox` |  | TCustomGroupBox - the base class for TGroupBox, TRadioGroup and TCheckGroup
`TCustomLabel` |  | TCustomLabel : the base type from which TLabel is derived.
`TCustomListBox` |  | TCustomList Box : the base class for TListBox
`TCustomMemo` |  | TCustomMemo : the base class for TMemo
`TCustomScrollBar` |  | TCustomScrollBar : the base class for TScrollBar
`TCustomStaticText` |  | TCustomStaticText : the base class for Static Text
`TEdit` |  | TEdit - an Edit Box: for entry or display of a single line of text.
`TGroupBox` |  | TGroupBox - a container that allows a number of objects to be grouped physically and conceptually on the form
`TLabel` |  | TLabel : a brief text label to be placed in the Form near any object that needs to be identified.
`TListBox` |  | TListBox : a simple string list from which a choice is made
`TMemo` |  | TMemo - a box for entry or display of multiple lines of text
`TMemoScrollbar` |  | TMemoScrollBar - a Scroll Bar specifically for use in Memo Boxes
`TRadioButton` |  | TRadioButton : a button that works with other Radio Buttons in a mutually exclusive way - if one button is selected, none of the others in the group can be selected
`TScrollBar` |  | TScrollBar - a control that allows the user to scroll the current page or document window by moving a slider
`TStaticText` |  | TStaticText : a box to display a Constant Text String
`TToggleBox` |  | TToggle Box : a labelled box capable of being checked or unchecked

The latest version of this document can be found at lazarus-ccr.sourceforge.net .