How do I check if GPIB bus has available data using SPCI?

I am currently using the NationalInstruments.Common.Native.dll as the library in my Visual Studio 2010 project. I have working projects but something that drives me a little crazy is the fact that the program crashes (only with the oscillscope and not our VNA) when attempting to open the GPIB bus for the oscope before there is a 'capture' initiated on the scope iteself. 

Is there a "GpibDevice." query which I can run that will return a TRUE or FALSE whether there is a signal on the BUS? This way I can set a while loop pending the boolean result of the GpibDevice. query.

Thanks or any help.