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From: d88-jwa@byse.nada.kth.se (Jon W{tte)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Selecting lines
Message-ID: <D88-JWA.91Mar14083109@byse.nada.kth.se>
Date: 14 Mar 91 07:31:12 GMT
References: <4747.27DDB39C@stjhmc.fidonet.org>
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Organization: Royal Institute of Technology, Stockholm, Sweden
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In-reply-to: Lawson.English@p88.f15.n300.z1.fidonet.org's message of 11 Mar 91 18:21:58 GMT


   JW> The last time around, the consensus was to use QuickDraw: 

Lawson.English@p88.f15.n300.z1.fidonet.org (Lawson English) writes:

   I don't mean to be dense, but I couldn't quite get that...

Basically, you set off a longword as portBits, create an offscreen
grafPort that's one by one pixel large (gee, that much, huh ? :-)
and set the portBits of that grafPort to your long value.

Initialize the value (portBits) with 0.
Initialize "selected object" to NULL.

Repeat
	Draw next item.
	is "the value" <> 0 ?
	yes:	set "selected object" to this item
		break out of loop
	no:	too bad
until there are no more items

"selected object" now contains your clicked-on object

   Thanks.

You're welcome.

   Lawson

						h+@nada.kth.se
						Jon W{tte

--
"The IM-IV file manager chapter documents zillions of calls, all of which
seem to do almost the same thing and none of which seem to do what I want
them to do."  --  Juri Munkki in comp.sys.mac.programmer