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From: gw18@prism.gatech.EDU (Greg Williams)
Newsgroups: comp.windows.open-look
Subject: Re: List notification occurs on mouse DOWN!
Message-ID: <30814@hydra.gatech.EDU>
Date: 7 Jun 91 13:30:17 GMT
References: <vanmelle.676257340@frango>
Organization: Georgia Institute of Technology
Lines: 25

vanMelle@Xerox.com (Bill van Melle) writes:

>Using XView 2.0 toolkit on a Sparc under OLWM...

>However, selection notification in a Scrolling List occurs on mouse
>DOWN.  Thus, if I press down the mouse button inside a scrolling list and
>wipe up and down the list, my notify proc gets called several times, and I
>never have the opportunity to retract my decision.

In your Scrolling List notify proc, you could check the event type by using
event_is_down(event) and event_is_up(event).  They return a 0/1 value if
the event is the appropriate type.  Thus you can do

  if (event_is_up(event)) {
    /* code here */
  }

In fact you can do something different on event_is_down(event) if you wanted.
Thus you can do processing on both the down and up parts of a button press.
I believe this will do what you want.
-- 
Greg Williams
Georgia Institute of Technology, Atlanta Georgia, 30332
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