I have 10 btc on address A.
Using raw transaction, I send 5btc from A to B and set the change address as A itself. Now because the transaction from A to B is not confirmed I can't spend the remaining 5 btc.
But I saw that the QT wallet can do this. Ex:
I have 10 btc on address A. I send 5btc to B. The wallet creates a new address C and sets it as the change address. Then I try using the 5 btc on the wallet and it works. It allows me to send from address C.
1) Is the wallet using unconfirmed outputs as inputs here?
2) If so, how is it doing this and how can I do it using raw transactions?
3) If not, what's going on here?