#define BORDERWIDTH  2
#define BORDERHEIGHT 1

#define WINDOWINFO(window) ((WindowInfo *)window->UserData)

typedef struct {
    MinList loadrecords;
    short   leftedge;
    short   rightedge;
    short   width;
    short   topedge;
    short   bottomedge;
    short   height;
    unsigned char back_pen_num;
} WindowInfo;