Difference between my code and testcon code

[kitten]

hi i use a component on qt and it works fine
it has a lot of events i use signal(QString,int,void*) to get all signals and it works fine
now i know one of signals has a integer parametr and i use QVarianttoQString() function like testcon code
the testcon works fine on my component but my program got crashed , i think it should be about how compiling code
can you explain more for me?
what should i do?

[tobias.hunger]

Sorry, but your description is so vague that the only thing I can say is: "It seems the difference is that your code is doing it wrong". Not helpful, I know:-)

Can you maybe provide some of your code? A buildable example would be best.

[kitten]

ok but i copy my code from testcon example,i will wrote it here but you can't run it because it communicate with a fingerprint device you don't have it,
the problem is on testcon it get me a correct integer input
but in my program it is crashed