# TBasicBackdrop Class Reference
[Base Classes for plugins]

Inheritance diagram for TBasicBackdrop:

List of all members.

## Public Member Functions
virtual MCCOMErr MCCOMAPI | QueryInterface (const MCIID &riid, void **ppvObj)
virtual uint32 MCCOMAPI | AddRef ()
virtual MCCOMErr MCCOMAPI | GetBackdropColor (TMCColorRGB &color, boolean &fullAreaDone, const TBBox2D &screenMinMax, const TVector2 &uv)=0

## Detailed Description

Basic Backdrop class. Derive from this for a default implementation of I3DExBackdrop

See also:
  I3DExBackdrop

## Member Function Documentation

virtual uint32 MCCOMAPI TBasicBackdrop::AddRef | ( |  | ) | `[inline, virtual]`

Increments the reference count of the object

Reimplemented from TBasicDataExchanger.

virtual MCCOMErr MCCOMAPI TBasicBackdrop::GetBackdropColor | ( | TMCColorRGB & | color,
|  | boolean & | fullAreaDone,
|  | const TBBox2D & | screenMinMax,
|  | const TVector2 & | uv |
| ) |  |  | `[pure virtual]`

Returns the color of the backdrop at a particular location of the screen.

Parameters:

  | color | The color that is returned.
  | fullAreaDone | For future use.
  | screenMinMax | The coordinates of the production frame in screen coordinates
  | uv | The coordinates of the point on the screen

Implements I3DExBackdrop.

virtual MCCOMErr MCCOMAPI TBasicBackdrop::QueryInterface | ( | const MCIID & | riid,
|  | void ** | ppvObj |
| ) |  |  | `[virtual]`

Check if the object supports a given interface and returns a pointer to that interface if it does. Note that QueryInterface will increment the reference count of the object by one if the interface is found.

Parameters:

  | riid | GUID of the interface
  | ppvObj | A pointer to the pointer being returned.

Reimplemented from TBasicDataExchanger.

The documentation for this class was generated from the following file:

- BasicEnvironment.h