Hi,

  Please could you describe more how to obtain the buggy situations?

Best,
Scuri

> -----Original Message-----
> From: Karagy [mailto:kar...@mail.ru]
> Sent: sábado, 14 de dezembro de 2013 12:33
> To: iup-users@lists.sourceforge.net
> Subject: Re: [Iup-users] canvas line
> 
> Hi.
> 
> More visual example in attach.
> w/o debug printing.
> On mouse click it draw 4 lines (from left to right):
> 1. emulated line (via cd.Pixel)
> 2. emulated line, then XOR cd.Line
> 3. cd.Line, then XOR emulated line
> 4. cd.Line in GUI-selected WriteMode
> 
> For xored lines: WHITE fill BLACK xor CYAN = RED overlaps, BLACK underlaps
-)
> Emulated line always as CAPFLAT.
> 
> Looks like that 1 missed pixel at the top - is center for square in
CAPSQUARE
> and, also, is center for half-circle for CAPROUND.
> 
> Missed pixels at bottom - also missed in CAPSQUARE. But in CAPROUND - ok.
> 
> Same bugs for horisontal lines. (not realised in this example)
> 
> --
> Regards,
> 
> Karagy.


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