Re: Mouse in scroll bar

["Rodney Daughtrey" <rodney%proact@uunet.UU.NET>]

Subject:   RE>>Mouse in scroll bar

> Date: 3/28/94 4:10 PM
> To: Rodney Daughtrey
> From: uunet!ils.nwu.edu!lynch
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> To: "Byron Davies" <mesqm5!byron_davies.tempe#u#cim>
> From: uunet!ils.nwu.edu!lynch
> Subject: Re: Mouse in scroll bar
> Cc: cambridge.apple.com!info-mcl

> >  REGARDING           Mouse in scroll bar
> >Is there an easy way to test if the mouse is in the scroll bar?  Or is there
> >another solution to the problem we're having?  We are treating each line in
the
> >Fred window as an active object, with a command being executed when the line
is
> >double-clicked.  Unfortunately, when someone clicks too fast in the scroll
bar,
> >the command is invoked.
> >
> >To rephrase my question, is there a way to prevent scroll bar clicks from
> >leaking through to the underlying window?

> In your view-click-event-handler where you test for double-click, include a
> test that where [the mouse-position second argument] is not within 16
> pixels of the right side of the window.

> If you are doing your double-click test in some sort of dialog-item-action,
> move it to view-click-event-handler.

> There really is no way to get the window to not get the scroll clicks.

> [Actually, the window gets the clicks and passes them on to the scroll
> bars, which apparently does its duty and then passes the click onto the
> window, just in case.]

I don't think this is quite right -- after the window passes the click event to
the scroll bar, the scroll bar does not pass the click event back to the window.
 An example: 

(make-instance 'ccl:window
  :view-subviews (list (make-instance 'ccl:scroll-bar-dialog-item
                         :view-position #@(20 20))))

(trace ccl:view-click-event-handler)

Now, clicking on the scroll bar produces:

? 
|Calling (CCL:VIEW-CLICK-EVENT-HANDLER #<WINDOW "Untitled" #x1AA74F1> 7405595) 
| Calling (CCL:VIEW-CLICK-EVENT-HANDLER #<CCL:SCROLL-BAR-DIALOG-ITEM #x1AA7479>
7405595) 
| CCL:VIEW-CLICK-EVENT-HANDLER returned NIL
|CCL:VIEW-CLICK-EVENT-HANDLER returned NIL
? 

Regardless, Rich's solution for testing the mouse click position being within 16
pixels of the right side of the window should still work...

> -- 
> --
> -- "TANSTAAFL" Rich lynch@ils.nwu.edu

---------------------
Rodney Daughtrey               Domain:  rodney@pro-solution.com
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