Class TPictureHeader

TPictureHeader

Support

Supported from 5.0

Description

Picture header providing an interface to a stored picture. The header holds:

• the picture’s type, encoded as a UID, which ensures that it will be restored to the correct picture type

• the picture’s size, which facilitates deferred loading

• the stream ID of the picture body, which is replaced by a pointer to the picture object when it has been restored.

Defined in TPictureHeader:
DeletePicture(), ExternalizeL(), InternalizeL(), TPictureHeader(), iPicture, iPictureType, iSize

TPictureHeader();

Description

Constructs a default picture header.

void ExternalizeL(RWriteStream& aStream) const;

Description

Externalises a picture header object to a write stream.

The presence of this function means that the standard templated stream operator<<() is available to externalise objects of this class.

Parameters

RWriteStream& aStream The write stream.

void InternalizeL(RReadStream& aStream);

Description

Internalises a picture header object from a read stream.

The presence of this function means that the standard templated stream operator>>() is available to internalise objects of this class.

Parameters

RReadStream& aStream The read stream.

void DeletePicture();

Description

Deletes the internalised picture.

The picture can only be deleted if the picture has been internalized.

TSwizzle<CPicture> iPicture

Description

A swizzle storing either the ID of the stream in which the picture is stored, or a pointer to the internalised picture.

TUid iPictureType

Description

A UID specifying the type of the picture.

TSize iSize

Description

The original size of the picture.