SetAPen(RastPort*, UBYTE);

[Piru]

If you're targetting OS4:

IGraphics->SetRPAttrs( rastport, RPATTR_APenColor, 0xRRGGBB, TAG_DONE );

And if you were targetting AROS/MorphOS you would use:

SetRPAttrs( rastport, RPTAG_FgColor, 0xRRGGBB, TAG_DONE );

At least MorphOS defaults to 3.x pens though, so before using truecolor rendering you should call SetRPAttrs( rastport, RPTAG_PenMode, FALSE, TAG_DONE );. That tells MorphOS that you really want to render by using RGB rather than pens. I don't remember if AROS had such "pen mode" default or not.

Anyway, if AROS graphicslibrary would be backported you'd get the RPTAG_FgColor and RPTAG_BgColor similar to AROS/MorphOS.

Here's some example code I wrote some time ago: http://www.sintonen.fi/src/misc/truecolortest.c

[xeron]

I better not tell what i miss(the list get too long)on OS4, but a AOS with all features of MOS and OS4 and Hardware support of MOS and OS4 that come in my mind for a good future AOS.

You just can't go a single post without making a dig at OS4 can you? *sigh*

[xeron]

@Piru
There is no "mode" on OS4, or at least the mode is transparent. If you set "APenColor" APen is an RGB colour value. If you then use SetAPen(), its a pen again.

[Karlos]

The OP hasn't really said what his target platform was, but reading between the lines, I assumed vanilla OS3.x.

The 4.x/AROS/MOS methods are interesting to note, but are they relevant?

[unusedunused]

Sure, but that's thanks to AfA, not AmigaOS 3.x tself.

sure but AFA can use for free, nobody must buy a expensive Hardware for this or pay any cent.

And btw this programs run too well when run on MOS(either 68k /PPC or compile for AROS)

only problem AFA have, it have no Licence from Ainc and no AOS source.But it run stable and is near 100% compatible and enhance AOS with the important missed features.

[Piru]

@Piru
There is no "mode" on OS4, or at least the mode is transparent. If you set "APenColor" APen is an RGB colour value. If you then use SetAPen(), its a pen again.

Well I hope there at least is some way to get and set the mode somehow? Else it'd be a bit messy to write library code that does some rendering using specific mode while restoring the old mode afterwards.

[unusedunused]

You just can't go a single post without making a dig at OS4 can you? *sigh*

You was the guy that tell all should buy OS4.If you not write it, i need nothing write about too few OS4 features for me to buy.

I tell what i miss in short this time in OS4.

Maybe the OS4 guys make it better, then maybe i can buy it.