chou@cs.washington.edu (Pai Chou) (05/20/91)
I have problems with PenPat() in THINK C's console window. If I don't call PenPat() at all, my Line() and LineTo() calls will draw lines correctly in the console window. But if I call PenPat(black) or any pattern at all, then the same Line() or LineTo() will not draw anything. I also tried PenPat(&black) but it doesn't make a difference. My program does not crash in either case. Is there something special I should do about calling PenPat() in the console window? I am using THINK C version 4.5, but my ANSI library is from 4.0 with the scanf patch. Thanks in advance. Pai Chou chou@june.cs.washington.edu
stevec@Apple.COM (Steve Christensen) (05/20/91)
chou@cs.washington.edu (Pai Chou) writes: >I have problems with PenPat() in THINK C's console window. >If I don't call PenPat() at all, my Line() and LineTo() calls >will draw lines correctly in the console window. > >But if I call PenPat(black) or any pattern at all, >then the same Line() or LineTo() will not draw anything. >I also tried PenPat(&black) but it doesn't make a difference. >My program does not crash in either case. > >Is there something special I should do about calling PenPat() >in the console window? I am using THINK C version 4.5, >but my ANSI library is from 4.0 with the scanf patch. >Thanks in advance. For C you should be using PenPat(&qd.black). The Inside Mac documentation was written primarily for Pascal which automatically handles the "&qd." part... steve -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Steve Christensen Never hit a man with glasses. stevec@apple.com Hit him with a baseball bat.
hairston@henry.ece.cmu.edu (David Hairston) (05/21/91)
[chou@cs.washington.edu (Pai Chou) writes:] [] I have problems with PenPat() in THINK C's console window. [] ... [] But if I call PenPat(black) or any pattern at all, [] then the same Line() or LineTo() will not draw anything. [] I also tried PenPat(&black) but it doesn't make a difference. [] My program does not crash in either case. [stevec@Apple.COM (Steve Christensen) writes:] [] For C you should be using PenPat(&qd.black). The Inside Mac documentation [] was written primarily for Pascal which automatically handles the "&qd." [] part... that's MPW C ... Think C defines Pattern: typedef unsigned char Pattern[8] and uses: extern Pattern black; and so on. so the call in Think C is PenPat(black), for example. however, in special cases, the compiler ignores the address operator on an array variable, thus PenPat(&black) is equivalent to PenPat(black). as to why this doesn't work in the console window, i dunno, are you setting the port to that window? -dave- hairston@henry.ece.cmu.edu