CPARROW.H

typedef struct 
  { 
    short lineup;             /* lineup/down, pageup/down are relative */ 
    short linedown;           /* changes.  top/bottom and the thumb    */ 
    short pageup;             /* elements are absolute locations, with */ 
    short pagedown;           /* top & bottom used as limits.          */ 
    short top; 
    short bottom; 
    short thumbpos; 
    short thumbtrack; 
    BYTE  flags;              /* flags set on return                   */ 
  } ARROWVSCROLL; 
typedef ARROWVSCROLL NEAR     *NPARROWVSCROLL; 
typedef ARROWVSCROLL FAR      *LPARROWVSCROLL; 
 
#define UNKNOWNCOMMAND 1 
#define OVERFLOW       2 
#define UNDERFLOW      4 
 
BOOL RegisterArrowClass (HANDLE hModule);