// from AFXMSG_.h

// User Button Notification Codes
#define ON_BN_CLICKED(id, memberFxn) \
	ON_CONTROL(BN_CLICKED, id, memberFxn)
#define ON_BN_DOUBLECLICKED(id, memberFxn) \
	ON_CONTROL(BN_DOUBLECLICKED, id, memberFxn)
#define ON_BN_SETFOCUS(id, memberFxn) \
	ON_CONTROL(BN_SETFOCUS, id, memberFxn)
#define ON_BN_KILLFOCUS(id, memberFxn) \
	ON_CONTROL(BN_KILLFOCUS, id, memberFxn)


// for general controls
#define ON_CONTROL(wNotifyCode, id, memberFxn) \
	{ WM_COMMAND, (WORD)wNotifyCode, (WORD)id, (WORD)id, AfxSig_vv, \
		(AFX_PMSG)&memberFxn },


#define ON_COMMAND(id, memberFxn) \
	{ WM_COMMAND, CN_COMMAND, (WORD)id, (WORD)id, AfxSig_vv, (AFX_PMSG)&memberFxn },
		// ON_COMMAND(id, OnFoo) is the same as
		//   ON_CONTROL(0, id, OnFoo) or ON_BN_CLICKED(0, id, OnFoo)