OScope__ChanAnnotateValue (ul_pbar_graphics)

 *  Synopsis:
 *    #include <ul_pbar_graphics:oscope.h>
 *
 *    TOScope__Result OScope__ChanAnnotateValue( int channel, int row, int col,
 *                                               const void *value, long int type,
 *                                               int color )
 *
 *  Function intent:
 *    Write a numeric value to the specified channel window at a specified
 *    [row, col] in a specified color.
 *    The display width of the numeric value is 9 characters.
 *  Function parameters:
 *    int       channel         channel number
 *    int       row             row at which to display text
 *    int       col             column at which to display text
 *    void      *value          pointer to the value to display
 *    long int  type            cbslib.h data type of 'value' (e.g., CNV_DOUBLE)
 *    int       color           color with which the text string is displayed
 *  Function return value:
 *    CBS_OK            success
 *    CBS_NOSETUP       OScope__DisplayScreen() not called
 *    CBS_RANGE         channel number out of range
 *    else              wn_xxx() function error occured