🚀 go-pugleaf

In article <1993Jan22.184022.5155@nntp.hut.fi> sakaria@vipunen.hut.fi (Sakari Aaltonen) writes:
>I'm trying to move bitmaps and lines across the screen. For lines, the ROP2
>mode NOTXORPEN seems to do the trick. However, the same (ternary) mode for 
>ROP, that is, for the bitmaps, doesn't have a name, so it's not in <windows.h>,
>say. According to a Petzold formula, the HIWORD of the mode should be 0x99. 
>But what's the LOWORD? I have no idea what the low word even *means*. There 
>seem to be about 65536 possible values...
>
>Would anyone be kind enough to look it up? No, I don't know where. Is this 
>what is meant by "clueless"?
>
>Thanks in advance,
>-- 
>-----------------------------------------------------------------------------
>Sakari Aaltonen                                 Email: sakaria@vipunen.hut.fi
>"Unlike Gnu, a public-domain Unix look-alike system, MINIX is not vaporware."
>                - Allen I.Holub, Dr.Dobb's, Jan '88 -

There is a section labeled "Ternary ROPs" in the SDK.  Look for 99 in the
left-hand column and then use the 32bit number associated with it.  You may
also find the discussion of computing custom ROPs based on how you want the
Pattern, Source, and Destination to interact (in the same section.)