#define GUPPI_PLOT_PLUG_IN0 (obj) #define GUPPI_IS_PLOT_PLUG_IN0 (obj) GuppiPlugIn* guppi_plot_plug_in_new (void);
GtkObject +----GuppiPlugIn +----GuppiPlotPlugIn
#define GUPPI_PLOT_PLUG_IN0(obj) ((obj) ? (GUPPI_PLOT_PLUG_IN(obj)) : NULL)
#define GUPPI_IS_PLOT_PLUG_IN0(obj) (((obj) == NULL) || (GUPPI_IS_PLOT_PLUG_IN(obj)))
GuppiPlugIn* guppi_plot_plug_in_new (void);