HP Vectra Technical Reference Manual page 79

This example shows how to use the SF_CREATE_EVENT function. The routine EVENT will be
the event procedure that is called when events are enabled.
EVENT PROC FAR
CMP AH, F -,SR
JE PROCESS_EVENT
MOV AH, RS_UNSUPPORTEO
IRET
PROCESSJVENT:
MOV AH, RS-3UCCESSFUL
IRET
EVENT ENOP
MOV AH, F -'O_CONTROL
MOV AL, SF_CREATEJVENT
MOV BP, V--'-TOUCH
MOV OX, OS
PUSH CS
POP ES
LEA 51, CS:EVENT
PUSH OS
INT HPJNTRY
POP OS
,. only support function F -,SR
,. code to process data
,. (see touch screen
,. event record)
,. return successful completion
,. want to use the current data
,. segment for event OS
,. current CS is also segment
,. of event routine
,. get the IP of the event
,. routine
,. save current OS
,. call extended BIOS driver
This subfunction enables the event (parent) call to the touch screen event routine
(V_EVENT_TOUCH). The link to the touch screen event routine must have already been
established using SF_CREATE_EVENT.
On Entry: AH
=
F_la_CONTROL (04H)
AL
=
SF_EVENT_ON (OAH)
BP
=
V_LTOUCH (OOC6H)
70 Input System and HP-HIL