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From: dmmg1176@uxa.cso.uiuc.edu (David M Marcovitz)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Double Click in Think C
Message-ID: <1991Apr15.155413.11238@ux1.cso.uiuc.edu>
Date: 15 Apr 91 15:54:13 GMT
References: <1991Apr9.203739.29376@ux1.cso.uiuc.edu>
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Organization: University of Illinois at Urbana
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This is a "summary" of the responses I got about how to do a
double-click in THINK C.

The main issue is that a double click is two distinct clicks.  The
first click should be treated like a normal click, and the second
click should be handled in a special way (if you want).  Thus, in a
double click, the first click is processed assuming there may or may
not be a second click.  If the firts click highlights something and
the second opens it, a double click should not just open the object;
it should highlight it first.

Given this, the method I suggested in the first note (saving the time
of the last click and checking to see if the new click is less than
GetDblTime() away from that) will work.  However, in THINK C, there is
a variable gClicks that will count how many clicks it took to get you
to the current event.  These variables can be checked in the
DoMouseDown method of the object.


--
David M. Marcovitz                     |  internet: marcovitz@uiuc.edu
Computer-based Education Research Lab  |            dmmg1176@uxa.cso.uiuc.edu
University of Illinois                 |  novanet:  marco / cca / cerl