7.21 kCADEventIDScroll

kCADEventPhaseBefore

A kCADEventPhaseBefore phase of the kCADEventIDScroll event is triggered when the users clicks in any part of a scroll bar. The action can be intercepted.

Also see kCADEventIDDragScroll

IO	Parameter	Type	Description
in	theCADArea	longint	Area ID
in	theEventID	longint	kCADEventIDScroll
in	theEventPhase	longint	kCADEventPhaseBefore
in	theEventData1	longint	Type of scroll, kCADEventDataScrollH or kCADEventDataScrollV
in	theEventData2	longint	0
in	theEventData3	longint	0
in	theEventData4	longint	0
in	theMouseX	real	Horizontal mouse coordinate in pixels
in	theMouseY	real	Vertical mouse coordinate in pixels
in	theEventValue1	real	0.0
in	theEventValue2	real	0.0
in	theKeyAsciiValue	integer	0
in	theModifiers	longint	Sum of pressed modifier keys, a mask of modifier key constants
in	theTickCount	longint	Tick count of the system software (a tick is a 1/60th of a second)
out	theEventResult	longint	Set to kCADEventResultDoFilter to filter out the event or to kCADEventResultDontFilter to let it pass.

kCADEventPhaseAfter

An kCADEventPhaseAfter phase is generated when the kCADEventPhaseBefore phase passed and scrolling has taken place.

IO	Parameter	Type	Description
in	theCADArea	longint	Area ID
in	theEventID	longint	kCADEventIDScroll
in	theEventPhase	longint	kCADEventPhaseAfter
in	theEventData1	longint	Type of scroll, kCADEventDataScrollH or kCADEventDataScrollV
in	theEventData2	longint	0
in	theEventData3	longint	0
in	theEventData4	longint	0
in	theMouseX	real	0.0
in	theMouseY	real	0.0
in	theEventValue1	real	0.0
in	theEventValue2	real	0.0
in	theKeyAsciiValue	integer	0
in	theModifiers	longint	0
in	theTickCount	longint	Tick count of the system software (a tick is a 1/60th of a second)
in/out	theEventResult	longint	Don’t change.