SoWinObject Class Reference

The SoWinObject class is the common superclass for all SoWin component classes. More...

#include <Inventor/Win/SoWinObject.h>

Inheritance diagram for SoWinObject:

Public Member Functions
virtual SoType	getTypeId (void) const =0
SbBool	isOfType (SoType type) const

Static Public Member Functions
static void	initClass (void)
static SoType	getClassTypeId (void)
static void	init (void)

Detailed Description

The SoWinObject class is the common superclass for all SoWin component classes.

The purpose of making this class the superclass of all SoWin device, component and viewer classes is to be able to do run-time type checking of the SoWin objects.

You can place the macro SOWIN_OBJECT_HEADER(classname,parentname) within a class definition header for SoWin extension components to automatically make the necessary definitions for setting up a run-time type system for your extension classes:

#ifndef MYSPECIALVIEWER_H
#define MYSPECIALVIEWER_H

class MySpecialViewer : public SoWinExaminerViewer {
  SOWIN_OBJECT_HEADER(MySpecialViewer, SoWinExaminerViewer);
  // [rest of class definition follows]
};

#endif // !MYSPECIALVIEWER_H

Then put the SOWIN_OBJECT_SOURCE(classname) macro within the actual implementation sourcecode file to include the necessary code for the run-time type system:

#include <MySpecialViewer.h>

SOQT_OBJECT_SOURCE(MySpecialViewer);

// [rest of class implementation]

See also the documentation of the SoType class in Coin or Inventor.

Member Function Documentation

initClass()

void SoWinObject::initClass ( void  )

static

Sets up initialization for data common to all instances of this class, submitting necessary information to the internal SoWin type system.

getClassTypeId()

SoType SoWinObject::getClassTypeId ( void  )

static

This static method returns the SoType object associated with objects of this class.

getTypeId()

SoType SoWinObject::getTypeId ( void  ) const

pure virtual

Returns the type identification of an object derived from a class inheriting SoWinObject. This is used for run-time type checking and "downward" casting.

Usage example:

void foo(SoWinViewer * comp)
{
  if (comp->getTypeId() == SoWinExaminerViewer::getClassTypeId()) {
    // safe downward cast, knows the type
    SoWinExaminerViewer * exviewer = (SoWinExaminerViewer *)comp;
  }
  else if (comp->getTypeId().isOfType(SoWinFlyViewer::getClassTypeId())) {
    // safe downward cast, knows the type
    SoWinFlyViewer * flyviewer = (SoWinFlyViewer *)comp;
    // then something else
  }
}

isOfType()

SbBool SoWinObject::isOfType

(

SoType

type

)

const

Returns TRUE if the type of this object is either of the same type or inherited from type.

init()

void SoWinObject::init ( void  )

static

Initialize the type system of SoWinObject, all SoWin device classes and all SoWin components (including viewers).

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

• SoWinObject.h
• SoWinObject.cpp