I've read these two topics on mixing qt and symbian code and using RComm
and came with following test app:
* simple gui to enter ussd string
* CActive based async private implementation behind qt api
* even add sync routine
Compileable code attached.
I test it on my N8 and got following: both sync and async routine never
completes request RComm::ReadOneOrMore (sync version hungs and
async never enters CActive::RunL second time).
Here's link to source in my dropbox folder http://dl.dropbox.com/u/28264752/ussd.zip