Defines the dimensions of a box.

typedef struct _BOXPARAMS {
  POINTL     ptl;             /*  Defines opposite corner of the box. */
  LONG       sizl.cx;  /*  Horizontal length of the full axis of an ellipse. */
  LONG       sizl.cy;  /*  Vertical length of the full axis of an ellipse. */
} BOXPARAMS;

typedef   BOXPARAMS   * PBOXPARAMS ;