Смещение метода в классе

class ICOMPONENT
 { public:
      // Property management:
      virtual CHAR *getprop (CHAR *name) = 0;
      virtual CHAR *getproptext (VOID) = 0;
      virtual VOID addprop (CHAR *propname, CHAR *item, WORD hflags) = 0;
      virtual VOID delprop (CHAR *propname) = 0;
      virtual VOID setproptext(CHAR *text) = 0;
 
      // Active State processing:
      virtual ACTIVESTATE getstate (INT element, ACTIVEDATA *data) = 0;
      virtual BOOL setstate (ACTIVESTATE state) = 0;
 
      // Graphics management:
      virtual VOID setdrawscale (INT ppi) = 0;
      virtual HDC  begincache (BOX &area) = 0;
      virtual HDC  begincache (INT symbol) = 0;
      virtual VOID endcache() = 0;
 
      // Vector drawing services:
      virtual HGFXSTYLE creategfxstyle (CHAR *name=NULL) = 0;
      virtual VOID selectgfxstyle (HGFXSTYLE style) = 0;
      virtual VOID setpenwidth (INT w) = 0;
      virtual VOID setpencolour (COLOUR c) = 0;
      virtual VOID setbrushcolour (COLOUR c) = 0;
      virtual VOID drawline (INT x1, INT y1, INT x2, INT y2) = 0;
      virtual VOID drawbox (INT x1, INT y1, INT x2, INT y2) = 0;
      virtual VOID drawbox (BOX &bx) = 0;
      virtual VOID drawcircle (INT x, INT y, INT radius) = 0;
      virtual VOID drawbezier (POINT *, INT numpoints=4) = 0;
      virtual VOID drawpolyline (POINT *, INT numpoints) = 0;
      virtual VOID drawpolygon (POINT *, INT numpoints) = 0;
      virtual VOID drawsymbol(INT symbol) = 0;
      virtual VOID drawsymbol(INT x, INT y, INT rot, INT mir, INT symbol) = 0;
      virtual VOID drawstate (ACTIVESTATE state) = 0;
      virtual BOOL getsymbolarea (INT symbol, BOX *area) = 0;
      virtual BOOL getmarker (CHAR *name, POINT *pos=NULL, INT *rot=NULL, INT *mir=NULL) = 0;
 
      // Text output services:
      virtual HTEXTSTYLE createtextstyle (CHAR *name=NULL) = 0;
      virtual VOID selecttextstyle (HTEXTSTYLE style) = 0;
      virtual VOID settextfont (CHAR *name) = 0;
      virtual VOID settextsize (INT h) = 0;
      virtual VOID setbold (BOOL f) = 0;
      virtual VOID setitalic (BOOL f) = 0;
      virtual VOID setunderline (BOOL f) = 0;
      virtual VOID settextcolour (COLOUR c) = 0;
      virtual VOID drawtext (INT x, INT y, INT rot, INT jflags, CHAR *text, ...) = 0;
 
      // Pop-up window support:
      virtual IPOPUP *createpopup (CREATEPOPUPSTRUCT *cps) = 0;
      virtual VOID deletepopup (POPUPID id) = 0;
 
      // Miscellaneous:
      virtual VOID settimestep (DOUBLE time) = 0;
      virtual VOID error (CHAR *msg, ...) = 0;
      virtual VOID repaint (BOOL erase) = 0;
 
 };

printf("%i \n", offsetof(ICOMPONENT,drawtext));