Joe.Monnin@f210.n110.z1.FIDONET.ORG (Joe Monnin) (05/31/91)
AREA:UUCP_AMI2
I'm just learning to program in C on my Amiga. I have set up a custom
screen on which I have put a borderless backdrop window that is
full-screen in size. All I want to do is to change the background color
of the window to black. It is currently blue. Try as I might, I can't
figue out how to do this seemingly simple thing. I've read all about
the colormap and the SetRGB4() function and all of that, but I don't
have a viewport defined. How do I change the background color?
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----------------------------------------------------------------------------peter@cbmvax.commodore.com (Peter Cherna) (06/01/91)
In article <450.28469A0E@afitamy.fidonet.org> Joe.Monnin@f210.n110.z1.FIDONET.ORG (Joe Monnin) writes: >AREA:UUCP_AMI2 >I've read all about >the colormap and the SetRGB4() function and all of that, but I don't >have a viewport defined. How do I change the background color? Your screen has a ViewPort embedded in it. So you would do SetRGB4( &myscreen->ViewPort, n, r, g, b ); If you're new to C, you may find the & and -> get confusing. Look at it as &(myscreen->ViewPort) if that helps. >AFIT Amiga Users BBS/UFGateway |Joe Monnin - via FidoNet node 1:110/300 Peter -- Peter Cherna, Operating Systems Development Group, Commodore-Amiga, Inc. {uunet|rutgers}!cbmvax!peter peter@cbmvax.commodore.com My opinions do not necessarily represent the opinions of my employer. "If all you have is a hammer, everything looks like a nail."