🚀 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.)
   

I posted a few days ago, wondering about the LOWORD for the ternary GDI mode
whose HIWORD is 0x99.

The only answer I got was from a Microsoft person, who told me to look it
up in the SDK. 

Yeah, well, I wouldn't have asked if I had the SDK.

However, I have just seen "Bodyguard" for the second time (Whitney Houston
is too good for words). So, feeling happy and generous, I will share a pearl
of wisdom: 0x99 would mean NOTXOR; SRCINVERT does a XOR; to get a NOTXOR
you must first invert your bitmap and *then* SRCINVERT. Child's play.

Now, if I only could figure out how to do FloodFills on a Laserjet...
-- 
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Sakari Aaltonen                             Helsinki University of Technology
Email: sakaria@vipunen.hut.fi
---  You can't keep a Finn down without him getting all red in the face  ----