NAME

       SoQtObject -

       The SoQtObject class is the common superclass for all SoQt component classes.

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

SYNOPSIS

       #include <Inventor/Qt/SoQtObject.h>

       Inherited by SoQtComponent, and SoQtDevice.

   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 SoQtObject class is the common superclass for all SoQt component classes.

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

       You can place the macro SOQT_OBJECT_HEADER(classname,parentname) within a class definition
       header for SoQt 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 SoQtExaminerViewer {
         SOQT_OBJECT_HEADER(MySpecialViewer, SoQtExaminerViewer);
         // [rest of class definition follows]
       };

       #endif // !MYSPECIALVIEWER_H

       Then put the SOQT_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

   void SoQtObject::initClass (void) [static]
       Sets up initialization for data common to all instances of this class, submitting
       necessary information to the internal SoQt type system.

       Referenced by init(), SoQtDevice::initClasses(), and SoQtComponent::initClasses().

   SoType SoQtObject::getClassTypeId (void) [static]
       This static method returns the SoType object associated with objects of this class.

       Referenced by SoQtRenderArea::sizeChanged().

   SoType SoQtObject::getTypeId (void) const [pure virtual]
       Returns the type identification of an object derived from a class inheriting SoQtObject.
       This is used for run-time type checking and 'downward' casting.

       Usage example:

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

       Referenced by isOfType(), and SoQtRenderArea::sizeChanged().

   SbBool SoQtObject::isOfType (SoTypetype) const
       Returns TRUE if the type of this object is either of the same type or inherited from type.

       References getTypeId().

   void SoQtObject::init (void) [static]
       Initialize the type system of SoQtObject, all SoQt device classes and all SoQt components
       (including viewers).

       References initClass(), SoQtDevice::initClasses(), and SoQtComponent::initClasses().

Author

       Generated automatically by Doxygen for SoQt from the source code.