heddle@clas01.cebaf.gov (David Heddle) (05/27/91)
Dear friends: Does anyone have code for generating a rgn from an icon (bw and color). I guess one uses the icon mask, but I don't know how to convert a bit map into a region. Presumably this is also how the lasso works in a bit map painting program. cheers, dph
peirce@outpost.UUCP (Michael Peirce) (05/28/91)
In article <1991May27.132246.17040@murdoch.acc.Virginia.EDU>, heddle@clas01.cebaf.gov (David Heddle) writes: > Dear friends: > > Does anyone have code for generating a rgn from an icon (bw and color). > I guess one uses the icon mask, but I don't know how to convert a > bit map into a region. Presumably this is also how the lasso works > in a bit map painting program. The following is a code fragment from some of my own code. It uses BitMapToRegion to convert the mask of a CICN into a region. You used to have to license this routine for some reason, but I *think* it's built into System 7. oldSpotRgn := NewRgn; FailNIL(oldSpotRgn); HLock(Handle(fCICN)); WITH fCICN^^ DO BEGIN iconBMap.baseAddr := @iconMaskData; FailOSErr(BitMapToRegionhccc(oldSpotRgn,iconBMap)); -- Michael Peirce -- outpost!peirce@claris.com -- Peirce Software -- Suite 301, 719 Hibiscus Place -- Macintosh Programming -- San Jose, California 95117 -- & Consulting -- (408) 244-6554, AppleLink: PEIRCE