How should I define a descriptor length when I don't konw its length?

[sundy10]

I mean whether there is a way to define an uncertain descriptor using TBuf<length> and so on?
and I don't want to waste any space.

[A.A.M.]

Use the heap descriptor — HBufC

[Symbian_Neil]

I mean whether there is a way to define an uncertain descriptor using TBuf<length> and so on?
and I don't want to waste any space.

You might find this blog written by Jo Stichbury useful to refer when you have some confusions regarding descriptors http://descriptors.blogspot.com/

Good Luck!

[andy205214]

If the length of buffer is uncertain before execution, you'd better allocate it in heap, that is use the HBufC class
also you can use RBuf, which is a resizeable buffer descriptor