[Overview][Resource strings][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'daemonapp' (#fcl)

# TCustomDaemonMapper

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Daemon mapper

## Declaration

Source position: daemonapp.pp line 268

`type TCustomDaemonMapper = class(TComponent)`
`protected`
`procedure CreateDefs; virtual;`
`procedure DoOnCreate; virtual;`
`procedure DoOnDestroy; virtual;`
`procedure DoOnInstall; virtual;`
`procedure DoOnUnInstall; virtual;`
`procedure DoOnRun; virtual;`
`public`
`constructor Create(); override;` |  | Create a new instance of TCustomDaemonMapper
`destructor Destroy; override;` |  | Clean up and destroy a TCustomDaemonMapper instance.
`published`
`property DaemonDefs: TDaemonDefs; [rw]` |  | Collection of daemons
`property OnCreate: TNotifyEvent; [rw]` |  | Event called when the daemon mapper is created
`property OnDestroy: TNotifyEvent; [rw]` |  | Event called when the daemon mapper is freed.
`property OnRun: TNotifyEvent; [rw]` |  | Event called when the daemons are executed.
`property OnInstall: TNotifyEvent; [rw]` |  | Event called when the daemons are installed
`property OnUnInstall: TNotifyEvent; [rw]` |  | Event called when the daemons are uninstalled
`end;`

## Inheritance

`TCustomDaemonMapper` |  | Daemon mapper
`TComponent,IUnknown,IInterfaceComponentReference`
`TPersistent`
`TObject`

## Description

The TCustomDaemonMapper class is responsible for mapping a daemon definition to an actual TDaemon instance. It maintains a TDaemonDefs collection with daemon definitions, which can be used to map the definition of a daemon to a TDaemon descendent class.

An IDE such as Lazarus can design a TCustomDaemonMapper instance visually, to help establish the relationship between various TDaemonDef definitions and the actual TDaemon instances that will be used to run the daemons.

The TCustomDaemonMapper class has no support for streaming. The TDaemonMapper class has support for streaming (and hence visual designing).

## See also

TDaemon |  | Daemon class for visual development
TDaemonDef |  | Daemon definition
TDaemonDefs |  | Collection of daemon definitions.
TDaemonMapper |  | Daemon mapper for designing in IDE

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