Steinberg::FUnknown Class Reference

#include <funknown.h>

Inheritance diagram for Steinberg::FUnknown:

List of all members.

Public Member Functions
virtual tresult PLUGIN_API	queryInterface (const char *iid, void **obj)=0
virtual uint32 PLUGIN_API	addRef ()=0
virtual uint32 PLUGIN_API	release ()=0
Static Public Member Functions
static void	addObject ()
static void	releaseObject ()
static int32	countObjects ()
Static Public Attributes
static const FUID	iid

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Detailed Description

The basic interface of all interfaces.

• The FUnknown::queryInterface method is used to retrieve pointers to other interfaces of the object.
• FUnknown::addRef and FUnknown::release manage the lifetime of the object. If no more references exist, the object is destroyed in memory.

Interfaces are identified by 16 byte Globally Unique Identifiers. The SDK provides a class called FUID for this purpose.

See also:

howtoClass

Definition at line 317 of file funknown.h.

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Member Function Documentation

void Steinberg::FUnknown::addObject

(

)

[static]

Definition at line 78 of file funknown.cpp.

virtual uint32 PLUGIN_API Steinberg::FUnknown::addRef

(

)

[pure virtual]

Add a reference and return the new reference count.

Remarks:

The initial reference count after creating an object is 1.

int32 Steinberg::FUnknown::countObjects

(

)

[static]

Definition at line 90 of file funknown.cpp.

virtual tresult PLUGIN_API Steinberg::FUnknown::queryInterface	(	const char *	iid,
		void **	obj
	)			[pure virtual]

Query for a pointer to the specified interface. Returns kResultOk on success or kNoInterface if the object does not implement the interface. The object has to call addRef when returning an interface.

Parameters:

	iid	: (in) 16 Byte interface identifier (-> FUID)
	obj	: (out) On return, *obj point to the requested interface

Implemented in Steinberg::Vst::AudioEffect, Steinberg::Vst::Component, and Steinberg::Vst::EditController.

virtual uint32 PLUGIN_API Steinberg::FUnknown::release

(

)

[pure virtual]

Release a reference and return the new reference count. If the reference count reaches zero, the object has to be destroyed in memory.

void Steinberg::FUnknown::releaseObject

(

)

[static]

Definition at line 84 of file funknown.cpp.

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Member Data Documentation

const FUID Steinberg::FUnknown::iid [static]

Reimplemented in Steinberg::IBStream, Steinberg::IPluginBase, Steinberg::IPluginFactory, Steinberg::IPluginFactory2, Steinberg::IPlugView, Steinberg::IPlugFrame, Steinberg::Vst::IAttributeList, Steinberg::Vst::IStreamAttributes, Steinberg::Vst::IAudioProcessor, Steinberg::Vst::IComponent, Steinberg::Vst::IComponentHandler, Steinberg::Vst::IEditController, Steinberg::Vst::IEventList, Steinberg::Vst::IHostApplication, Steinberg::Vst::IMessage, Steinberg::Vst::IConnectionPoint, Steinberg::Vst::IParamValueQueue, Steinberg::Vst::IParameterChanges, Steinberg::Vst::IUnitHandler, Steinberg::Vst::IUnitInfo, and Steinberg::Vst::IUnitData.

Definition at line 338 of file funknown.h.

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

• funknown.h
• funknown.cpp

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Copyright ©2008 Steinberg Media Technologies. All Rights Reserved.