man SoType () - stores runtime type information
NAME
SoType - stores runtime type information
INHERITS FROM
SoType
SYNOPSIS
#include <Inventor/SoType.h>
Methods from class SoType:
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fromName(SbName name)
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getName() const
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getParent() const
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badType()
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isBad() const
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isDerivedFrom(SoType t) const
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getAllDerivedFrom(SoType type, SoTypeList &list)
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canCreateInstance() const
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createInstance() const
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operator ==(const SoType t) const
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operator !=(const SoType t) const
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operator <(const SoType t) const
DESCRIPTION
The SoType class keeps track of runtime type information in Inventor. Each type is associated with a given name, so lookup is possible in either direction. Many Inventor classes request a unique SoType when they are initialized. This type can then be used to find out the actual class of an instance when only its base class is known, or to obtain an instance of a particular class given its type or name. Note that the names associated with types of Inventor classes do not contain the "So" prefix.
METHODS
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fromName(SbName name)
Returns the type associated with the given name.
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getName() const
Returns the name associated with a type.
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getParent() const
Returns the type of the parent class.
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badType()
Returns an always-illegal type. Useful for returning errors.
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isBad() const
Returns TRUE if the type is a bad type.
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isDerivedFrom(SoType t) const
Returns TRUE if the type is derived from type t.
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getAllDerivedFrom(SoType type, SoTypeList &list)
Adds all types derived from the given type to the given type list. Returns the number of types added.
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canCreateInstance() const
Some types are able to create instances; for example, most nodes and engines (those which are not abstract classes) can be created this way. This method returns TRUE if the type supports such creation.
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createInstance() const
Creates and returns a pointer to an instance of the type. Returns NULL if an instance could not be created for some reason. The pointer is returned as a generic pointer, but can be cast to the appropriate
type. For example:
SoCube *c = (SoCube *) SoCube::getClassTypeId().createInstance();is a convoluted way of creating a new instance of an SoCube. c } c } operator ==(const SoType t) const
c } c } operator !=(const SoType t) const
Returns TRUE if this type is the same as or not the same as the given type. c } c } operator <(const SoType t) const
Less-than comparison operator that can be used to sort types. This is pretty useless otherwise.
SEE ALSO
SoAction, SoBase, SoDetail, SoError, SoEvent, SoField