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From: harryk@bucsf.bu.edu (Harry Karayiannis)
Newsgroups: comp.sys.atari.st
Subject: Re: Drawing rubber-bands
Message-ID: <82966@bu.edu>
Date: 2 Jun 91 15:01:02 GMT
References: <5753@ac2.maus.de>
Sender: news@bu.edu
Reply-To: harryk@bucsf.bu.edu (Harry Karayiannis)
Followup-To: comp.sys.atari.st
Distribution: world,comp
Organization: Computer Science Department, Boston University, Boston, MA, USA
Lines: 34

In article <5753@ac2.maus.de> Stefan_Rupp@ac2.maus.de (Stefan Rupp) writes:
>
>Hello,
>
>>It's easy enough to determine the start point by using the EventMulti
>>loop to detect the mouse button's first click, but how does one keep
>>track of the mouse cursor and draw to it AND know when the mouse button
>>is clicked again?
>>
>>Is it necessary to drop out of the EventMulti loop and use lower-level
>>facilities?
>
>No! If you want to follow the path of your mouse-cursor, you may do a
>event-multi call with parameter MU_M1 (Mouse-Event 1). Just set the width and
>height of the rectangle to 1 pixel and if you move the mouse and the cursor
>leaves the rectangle, you'll recieve a MU_M1-Event.
>

Or you can use the AES function rubbox() that does the whole job for you
(note that some compilers, such as Laser C, call the function
 rubberbox()
)

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