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

# Reference for unit 'Buttons'

Defines several specialist button classes

`uses`
`System,`
`types,`
`Classes,`
`sysutils,`
`math,`
`LCLType,` |  | This unit is being created specifically for compatibility with Delphi. It should only be used for constants and type definitions that are included in the Delphi Windows unit. This is only done for compatibiltiy.
`LCLProc,` |  | Useful lower level helper functions and classes
`LCLIntf,` |  | Contains winapi like functions for Delphi compatibility
`LCLStrConsts,` |  | This unit contains all resource strings of the LCL
`GraphType,` |  | Definitions of several special types (including Raw Image) to be used for graphics
`Graphics,` |  | Unit contains definitions for many fundamental classes and types used in graphic applications
`ImgList,` |  | Contains definitions for TCustomImageList. base class for TImageList
`ActnList,` |  | Defines classes for Actions and Lists of actions to be used with LCL components
`Controls,` |  | This unit contains basic classes for visual controls.
`StdCtrls,` |  | Several standard controls used in most Lazarus forms
`LMessages,` |  |
`Forms,` |  | Contains definitions and descriptions for constructing the Forms which are the basis of the Lazarus Graphical User Interface
`Themes,` |  | For manipulation of display Themes, mostly in a Windows XP (and later) environment
`Menus,` |  | Menus to be used in Forms created with the Lazarus IDE
`LResources,` |  | This unit maintains and stores all lazarus resources in the global list named LazarusResources and provides methods and types to stream components
`ImageListCache;` |  |

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