OScope__Initialize (ul_pbar_graphics)

 *  Synopsis:
 *    #include <ul_pbar_graphics:oscope.h>
 *
 *    TOScope__Result OScope__Initialize( long int whichScreen,
 *                                        const char *windowTitle, int channelCount,
 *                                        int nSamples )
 *
 *  Function intent:
 *    OScope__Initialize() initializes the graphic display device and
 *    establishes default values which provide for the basic oscilloscope
 *    display.  OScope__Initialize() must be called before any other OScope
 *    functions.
 *  Function parameters:
 *    long int  whichScreen     desired display screen (GXPA_1 or GXPA_2)
 *    char      *windowTitle    pointer to display device window title string
 *    int       channelCount    number of channels to be displayed on the scope
 *    int       nSamples        number of data points in a trace
 *  Function return value:
 *    CBS_OK            success
 *    CBS_MEMFAIL       unable to allocate memory
 *    else              wn_xxx() function error status