Path: utzoo!attcan!uunet!iconsys!tom
From: tom@iconsys.UUCP (Tom Kimpton)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Double Clicking
Message-ID: <341@iconsys.UUCP>
Date: 24 Feb 89 23:45:27 GMT
References: <4452@hubcap.UUCP> <1967@helios.ee.lbl.gov>
Reply-To: tom@iconsys.UUCP (Tom Kimpton)
Organization: ICON International, Inc., Orem, UT
Lines: 62

In article <1967@helios.ee.lbl.gov> beard@ux1.lbl.gov (Patrick C Beard) writes:
>In article <4452@hubcap.UUCP> mikeoro@hubcap.UUCP (Michael K O'Rourke) writes:
>>A couple months ago, someone posted some example code to detect a double click.
>>I want to detect a double click in the title bar of a window.
>
>The easiest way to detect a double click is to save the time of each mouse
>down event in some variable, say lastClickTime.  To detect if the next click
>should be interpreted as a double click, subtract this time from the time
>of the next click and compare it to the result of  the GetDblTime() trap.
>
>i.e.:
>
>	long lastClickTime=0;
>	.
>	.
>	.
>	/* assume we've been keeping track of lastClickTime... */
>	if(event.what==mouseDown) {
>		if(event.when-lastClickTime<=GetDblTime()) {
>			ProcessDoubleClicks();
>			lastClickTime=0;	/* reset it */
>		} else
>			lastClickTime=event.when;
>	}
>
>Hope that helps.
>
	As well you would want to keep the location of the last click and
check to see if both it and the current location are in an appropriate
selection rectangle.

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-- 
Tom Kimpton                    UUCP: {uunet,caeco,nrc-ut}!iconsys!tom
Software Development Engineer  ARPANET: icon%byuadam.bitnet@cunyvm.cuny.edu
Icon International, Inc.       BITNET: icon%byuadam.bitnet (multi-user acct)
Orem, Utah 84058               PHONE: (801) 225-6888