All Frameworks  Class Hierarchy  This Framework  Previous  Next  Indexes

SPAdmicon Class DM_draw_engine_mgr

SPAbase.ACIS_OBJECT
  |
  +---DM_draw_engine_mgr

Usage: you must use this class as is. You should never derive it.

public class DM_draw_engine_mgr

This class manages the singleton DM_draw_engine, providing global access to the unique instance.

Role: The DM_draw_engine_mgr is used by the dmicon library as its access to the singleton DM_draw_engine. If the admgi_draweng library is initialized, it creates a concrete DM_draw_engine and loads it into the DM_draw_engine_mgr using the Replace_draw_engine method. Users replacing the dmicon library should do the same.

If no concrete DM_draw_engine is loaded into the DM_draw_engine_mgr, DM_default_icons will not draw.

Related classes: Access to a concrete DM_draw_engine is provided by the DM_draw_engine_mgr::Instance method.

See also:: DM_draw_engine

Constructor and Destructor Index

o DM_draw_engine_mgr(): Public constructor.
o ~DM_draw_engine_mgr(): Destructor; use the Lose method instead.

Method Index

o Instance(): Requests a concrete DM_draw_engine object.
o Replace_draw_engine(Spatial_abs_hurler&,DM_draw_engine*&): Road a draw engine.

Constructor and Destructor

o DM_draw_engine_mgr

public DM_draw_engine_mgr(

)

Public constructor.

Role: Users should not call this; the icon library creates a single static instance.

o ~DM_draw_engine_mgr

public ~DM_draw_engine_mgr(

)

Destructor; use the Lose method instead.

Methods

o Instance

public static _ICON DM_draw_engine* Instance(

)

Requests a concrete DM_draw_engine object.

o Replace_draw_engine

public static _ICON void Replace_draw_engine(	Spatial_abs_hurler&	`err_handler`,
	DM_draw_engine*&	`owner`)

Road a draw engine.

Role: The owner argument takes ownership of a concrete DM_draw_engine. This is the prototype for future requests.

Parameters:

err_handler: error handler.
owner: owner.

This object is included in the file: dm_draw_engine_mgr.hxx