NewLC - How to use descriptor TPtr/TDes as class member - Comments

How to use descriptor TPtr/TDes as class member

balaraju417 — Fri, 08 Apr 2005 08:07:43 +0200

hi Dishneau,

Thank you very much for this information. It helped so lot.
But I have another problem. Can you please solve it?

How can i assign value to the member variable iPtr (Tptr iPtr) and how to retrive it again. Its highly essential for my project.

regards

Balaraju

Quote from: dishneau

TPtr does not have a default constructor. So in order to create a TPtr as a member variable in your class you must construct the TPtr using one of TPtrs provided constructors in your class's constructor initialization list.

TPtr's constructors

Code:

IMPORT_C TPtr16(TUint16 *aBuf,TInt aMaxLength);
IMPORT_C TPtr16(TUint16 *aBuf,TInt aLength,TInt aMaxLength);

Example:

Code:

//Calling TPtr iPtr using the 1st constructor above
CMyTestParm::CMyTestParm() : d(NULL,0)
{

}

Remember, TPtr does not actually own data, it points to data. So if you create a TPtr, you don't delete it.

How to use descriptor TPtr/TDes as class member

dishneau — Thu, 07 Apr 2005 19:46:12 +0200

Code:

IMPORT_C TPtr16(TUint16 *aBuf,TInt aMaxLength);
IMPORT_C TPtr16(TUint16 *aBuf,TInt aLength,TInt aMaxLength);

Example:

Code:

//Calling TPtr iPtr using the 1st constructor above
CMyTestParm::CMyTestParm() : d(NULL,0)
{

}

Remember, TPtr does not actually own data, it points to data. So if you create a TPtr, you don't delete it.

How to use descriptor TPtr/TDes as class member

joker_pl — Thu, 07 Apr 2005 17:40:54 +0200

make a pointer.
TPtr * d;

How to use descriptor TPtr/TDes as class member

balaraju417 — Thu, 07 Apr 2005 15:23:34 +0200