Binary compatibility

Changes in header files and libraries affect the binary compatibility between S60 platform versions. This section describes the changes from the S60 3rd Edition, Feature Pack 2 to the S60 5th Edition and from the S60 5th Edition to the Nokia N97.

Changes in the S60 5th Edition

The following table describes the changes in header files and libraries affecting binary compatibility between the S60 5th Edition and S60 3rd Edition, Feature Pack 2.

Location	Description	Comments
File `aknquerydialog.h`	`CAknQueryDialog::InputCapabilities() const` has been overridden in the derived class.	Virtual function overridden in derivable class. This function will not be called in clients deriving from this class.
File `w32adll.h`	`Vtable` layout changed.	The class `MAnimGeneralFunctionsWindowExtension` is externally derivable since there is no private constructor. Adding virtual function `virtual void WindowConfig(TWindowConfig&) const=0` changes the `vtable` position of any virtual functions defined by a derived class.
Class `CBaseMTm` in the file `mtclbase.h`	The virtual function `Extension_()` has been overridden	The class has a public constructor, so `vtable` containing the pointers to the virtual methods might be in the client code and point to the base class virtual methods.
Class `CAknSettingPage` in the file `aknsettingpage.h`	The virtual function `InputCapabilities( ) const` has been overridden	The class has a public constructor, so `vtable` containing the pointers to the virtual methods might be in the client code and point to the base class virtual methods.
Class `CEikMfne` in the file `eikmfne.h`	The virtual functions `MakeVisible( ::TBool )` and `SizeChanged( )` have been overridden	The class has a public constructor, so `vtable` containing the pointers to the virtual methods might be in the client code and point to the base class virtual methods.
Class `CCamera` in the file `ecam.h`	Exported functions `New2L( ::MCameraObserver&, ::TInt )` and `NewDuplicate2L( ::MCameraObserver&, ::TInt )` have been removed.	Legacy applications may still use these functions.
`inetprotutil.lib`	New exported function inserted in the middle	Dummy function `EscapeUtils::DummyForwardingFunctionForCompatibility` has been inserted and function `EscapeUtils::SpecificEscapeEncodeL` has been moved to ordinal 366 to maintain compatibility with Symbian OS version 9.2 ,9.3, and 9.4.

Changes in the Nokia N97

The following table describes the changes in header files and libraries affecting binary compatibility between the Nokia N97 and the S60 5th Edition.

Location	Description	Comments
File `MediaFileTypes.hrh`	The following Media Fetch API enumerations are not supported: `ENoMediaFile` `ERAMFile` `EPlaylistFile` `EGMSFile` `EPresentationsFile` `EAnyMediaFile`	If the enumerations are used, the `MGFetch::RunL` method leaves with `KErrNotSupported`. For a list of file types that the supports, see Supported file types.
Content Listing Framework API: all classes and methods	The content listing framework is no longer supported. Therefore, some media content, such as presentations, cannot be fetched. In addition, the S60 Gallery has been removed.	The Nokia N97 contains media fetch plugins to fetch image, video, and audio files. For more information, see Supported file types. You can create your own media fetch plugins to support additional content types.

Location

Description

Comments

File MediaFileTypes.hrh

The following Media Fetch API enumerations are not supported:

ENoMediaFile
ERAMFile
EPlaylistFile
EGMSFile
EPresentationsFile
EAnyMediaFile

If the enumerations are used, the MGFetch::RunL method leaves with KErrNotSupported.

For a list of file types that the supports, see Supported file types.

Content Listing Framework API: all classes and methods

The content listing framework is no longer supported. Therefore, some media content, such as presentations, cannot be fetched. In addition, the S60 Gallery has been removed.

The Nokia N97 contains media fetch plugins to fetch image, video, and audio files. For more information, see Supported file types.

You can create your own media fetch plugins to support additional content types.