Question on using plot in call_scilab module

[Norman Beamish]

Hi,

I'm using the call_scilab module to access scilab functions from within 
a C program.  I'm using MS Visual C++ 2008 on MS Vista.

Everything that just writes its output to the console works ok.  However 
when I use the scilab plot command
      SendScilabJob("plot(x,y, style);")
I find that the plot window freezes and the plot menu options are 
unavailable unless I run the following loop: -
    while( ScilabHaveAGraph() )
    {
        ScilabDoOneEvent();
    }
Of course this loop stops my program from doing anything else. 

My question:
I believe this problem arises because everything is operating in a 
single thread.  Is there a way to make the plot command start out in a 
separate thread so that it can still monitor for user events such as 
mouse clicks while the rest of my program continues.

thanks,
Norm