How to abort waveform acquisition with iviscope when not triggered ?

I am developping some functions expoiting Keysigth DSO-X 3014 throught class driver Iviscope.

I have made a function using IviScope_ReadWaveform (), with a correct trigger configuration (edge, positive slope...). No problem when the signal occurs, I get wafeform data.

But if there is no signal after 5 seconds, function exits with BFFF0015 timeout error code. Everything is OK. But scope is in run mode (waiting signal) and do not accept any command anymore (from iviscope class or even specific ag2k3k driver).

A viClear sent by Visa test panel is a solution, but I can't get visa handle session handle thougth iviscope.h.

A solution could be to call IviScope_ConfigureInitiateContinuous (viSession, VI_FALSE); 

but timeout again and again...

Anyone has a solution?

Thanx