Class TPtrC16

class TPtrC16 : public TDesC16;

Description

16-bit non-modifiable pointer descriptor.

This is a descriptor class intended for instantiation and encapsulates a pointer to the 16-bit data that it represents. The data can live in ROM or RAM and this location is separate from the descriptor object itself.

The data is intended to be accessed, but not changed, through this descriptor. The base class provides the functions through which data is accessed.

Derivation

• TDesC16 - Abstract base class for 16-bit descriptors

• TPtrC16 - 16-bit non-modifiable pointer descriptor

Members

Defined in TPtrC16:
Set(), Set(), Set(), TPtrC16(), TPtrC16(), TPtrC16(), TPtrC16(), iPtr

Inherited from TDesC16:
Alloc(), AllocL(), AllocLC(), AtC(), Compare(), CompareC(), CompareF(), DoSetLength(), EIsNotPrefix, EIsPrefix, EMightBePrefix, Find(), FindC(), FindF(), HasPrefixC(), Left(), Length(), Locate(), LocateF(), LocateReverse(), LocateReverseF(), Match(), MatchC(), MatchF(), Mid(), Ptr(), Right(), Size(), TPrefix, Type(), operator!=(), operator>(), operator>=(), operator<(), operator<=(), operator==(), operator[]()

See also:

• TPtr16
• TDesC16
• TDes16
• TBufC16
• TBuf16
• HBufC16

IMPORT_C TPtrC16();

Description

Constructs an empty 16-bit non-modifiable pointer descriptor.

It represents no data and its length is zero.

The non-modifiable pointer descriptor can, subsequently, be set to represent data.

See also:

• TPtrC16::Set()

IMPORT_C TPtrC16(const TDesC16 &aDes);

Description

Constructs the 16-bit non-modifiable pointer descriptor from any existing descriptor.

It is set to point to the same data and is given the same length as the source descriptor.

Parameters

const TDesC16 &aDes A reference to a 16-bit non-modifiable descriptor.

IMPORT_C TPtrC16(const TUint16 *aString);

Description

Constructs the 16-bit non-modifiable pointer descriptor to point to a zero terminated string, whether in RAM or ROM.

The length of the descriptor is set to the length of the zero terminated string, excluding the zero terminator.

Parameters

const TUint16 *aString A pointer to a zero terminated string.

IMPORT_C TPtrC16(const TUint16 *aBuf, TInt aLength);

Description

Constructs the 16-bit non-modifiable pointer descriptor to point to the specified location in memory, whether in RAM or ROM.

The length of the descriptor is set to the specified length.

Parameters

const TUint16 *aBuf A pointer to the location that the descriptor is to represent. TInt aLength The length of the descriptor.This value must be non-negative.

Panic codes

USER 17 if aLength is negative.

inline void Set(const TUint16 *aBuf, TInt aLength);

Description

Sets the 16-bit non-modifiable pointer descriptor to point to the specified location in memory, whether in RAM or ROM.

The length of the descriptor is set to the specified length.

Parameters

const TUint16 *aBuf A pointer to the location that the descriptor is to represent. TInt aLength The length of the descriptor. This value must be non-negative

Panic codes

USER 17, if aLength is negative.

inline void Set(const TDesC16 &aDes);

Description

Sets the 16-bit non-modifiable pointer descriptor from the specified descriptor.

It is set to point to the same data and is given the same length.

Parameters

const TDesC16 &aDes A reference to a 16-bit non-modifiable descriptor

inline void Set(const TPtrC16 &aPtr);

Description

Parameters

const TPtrC16 &aPtr

protected: const TUint16 * iPtr;

Description