Thanks guys for the help on this. I used the
WinFillRectangle with the winMask mode to work on Palm
OS 3.0 or greater.
Mike McCollister
--- Aaron Ardiri <[EMAIL PROTECTED]> wrote:
> > > Does anyone know how to make every other pixel
> white
> > > on a bitmap (checkerboard patter) so that it
> appears
> > > to be grayed out?
> >
> > Draw your bitmap, use WinSetPattern and
> WinFillRectangle to draw a grey
> > rectangle offscreen, then use WinCopyRectangle in
> winErase mode to
> > screen out every other pixel. To get alternating
> pixels, use a custom
> > pattern defined like
> >
> > CustomPatternType greyPattern = { 0x55, 0xAA,
> 0x55, 0xAA, 0x55, 0xAA,
> > 0x55, 0xAA };
> >
> > There are other ways to do this, but its not
> easily done on pre-3.5
> > devices.
>
> the solution you specified will work on pre-3.5
> systems :)
>
> it however, is probably better to pre-render the
> image and store
> the "greyed" image seperately and then draw over
> the current bitmap
> when you want it greyed out :)
>
> // az
> [EMAIL PROTECTED]
> http://www.ardiri.com/ <--- free games!
>
>
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