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From: linde@embezzle.stanford.edu (Andrei Linde)
Newsgroups: comp.sys.mac.hypercard,comp.sys.mac.programmer
Subject: Re: odd-shaped buttons
Message-ID: <linde.655826236@embezzle.stanford.edu>
Date: 13 Oct 90 13:57:16 GMT
References: <Qb2YKgy00Uh_I2T2V2@andrew.cmu.edu> <1990Oct13.000500.14994@midway.uchicago.edu>
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francis@daisy.uchicago.edu (Francis Stracke) writes:

>In article <Qb2YKgy00Uh_I2T2V2@andrew.cmu.edu> ch2i+@andrew.cmu.edu (Charles A. Hill) writes:
>>I want to use the outlines of a picture to define the parameters of a
>>button.  In other words, if someone clicks anywhere within the outlines
>>of a picture (no matter what shape the picture is), the button will be
>>activated.  I've been trying to improvise by filling all the nooks and
>[...]
>>I don't know any languages but Hypertalk, but I'm told that making an
>>irregularly shaped picture "hot" is no sweat in a language such as C. 

>It's not incredibly easy.  You'd have to have some way of getting the
>region from the bitmap (is this supported by the Toolbox?), then check,
>for each click, if the mouse is inside the region.

>In HC, this would take a XFCN returning a handle to the region, and
>another to check if a given point is in a given region.  The card script
>would catch the mouseUp event, then act on it as necessary.

>Anybody in comp.sys.mac.programmer got any better ideas?

>| Francis Stracke		| My opinions are my own.  I don't steal them.|
>| Department of Mathematics	|=============================================|
>| University of Chicago		| A mathematician is a professional	      |
>| francis@zaphod.uchicago.edu	|   schizophrenic.--Me.		       	      |
If picture is not too complex then just make several buttons on it which
would countain script:
on mouseUp
	click at loc of card button "MyPicture"
end mouseUp
    
and call one of the buttons on this picture "MyPicture" and give it a
script that you want to be executed.

Again if the picture is not too complex you will beable to aproximate it
with rectangular buttons preety well. 

This is not the only choice, so if you don't like it try something else.

          - Dmitri Linde