#include <history.h> CuiRectangleEmboss; CuiWidget* cui_rectangle_emboss_new (void);
GObject +----CuiWidget +----CuiRectangle +----CuiRectangleEmboss
typedef struct _CuiRectangleEmboss CuiRectangleEmboss;
CuiWidget* cui_rectangle_emboss_new (void);
a new embossed rectangle