IlvSelectionInterface Class Reference

Interface used to create selection objects. More...

#include <ilviews/intrface/select.h>

Public Member Functions
virtual IlvDrawSelection *	makeSelection (IlvDisplay *display, IlvGraphic *obj) const =0
	Returns the selection object for a given graphic object. More...

Detailed Description

Interface used to create selection objects.

Library: views

This abstract class provides an interface to create the selection object that must be associated with a graphic object. The selection object is used to highlight and manipulate the selected object.

Each subclass must provide an implementation for the IlvSelectionInterface::makeSelection() method. Each graphic class can then be associated with a specific IlvSelectionInterface subclass using the DeclareInterface() and IlvRegisterInterface() macros.

First, add the following in the class declaration:

class MyGraphicClass : public IlvSimpleGraphic {
 ...
 DeclareInterface(Selection);
 ...
};

Then, add the following in the implementation file, outside the body of a function:

IlvRegisterInterface(Selection,
                     MyGraphicClass,
                     MySelectionInterfaceClass);

See also

IlvGraphic.

Member Function Documentation

makeSelection()

virtual IlvDrawSelection* IlvSelectionInterface::makeSelection ( IlvDisplay *  display, IlvGraphic *  obj  ) const

pure virtual

Returns the selection object for a given graphic object.

Parameters

display	The IlvDisplay used to draw the selection object.
obj	The graphic object being considered.

Returns

The selection object for the obj graphic object.