Article View: comp.sys.amiga.tech
Article #146Re: Clicking on Irregular Shapes
From: Stuart H. Ferguson
Date: Fri, 23 Jun 1989 06:58
Date: Fri, 23 Jun 1989 06:58
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1482 bytes
+-- rap@ez.ardent.com (Rob Peck) writes: | In article <7110@cbmvax.UUCP> steveb@cbmvax.UUCP (Steve Beats) writes: | >In article <42700015@m.cs.uiuc.edu> schwager@m.cs.uiuc.edu writes: | >>Given an irregularly shaped object on a Screen, how can one tell if | >>the mouse button has been pressed inside of it? I don't want a box all | >>around or inside it; I want the object and exactly the object. | | I had this same thought, but it was pointed out to me that starting with | 1.2, and documented in the 1.2 enhancer docs (though I dont have em here), I do. To coin a phrase: "It's in there!" Check out section 4.6.2 -- Masked Gadgets. To summarize, there's a "BoolInfo" structure that hangs off the SpecialInfo pointer in a boolean gadget. This struct points in turn to an Intuition "Image" struct that defines your mask region. The refreshing and highlighting don't honor the mask, it seems, so these gadgets should probably be "quiet" and let you do your own highlighting. -- Stuart Ferguson (shf@well.UUCP) Action by HAVOC
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!well!shf From: shf@well.UUCP (Stuart H. Ferguson) Newsgroups: comp.sys.amiga.tech Subject: Re: Clicking on Irregular Shapes Message-ID: <12341@well.UUCP> Date: 23 Jun 89 06:58:15 GMT References: <42700015@m.cs.uiuc.edu> <7110@cbmvax.UUCP> <7007@ardent.UUCP> Reply-To: shf@well.UUCP (Stuart H. Ferguson) Organization: The Blue Planet Lines: 21