OpenEuphoria

Re: [Win32] Maximal pixmap (CompatibleBitmap) size

• Posted by Martin Stachon <martin.stachon at worldonline.cz> May 17, 2003
• 424 views

Pete Lomax wrote:
> >Pete Lomax <petelomax at blueyonder.co.uk> wrote:
> >> On Thu, 15 May 2003 18:43:40 +0200, Martin Stachon
> >> <martin.stachon at worldonline.cz> wrote:
> >>
> >> >I use stretchBlt() to zoom the bitmap with setStretchBltMode to HALFTONE.
> >>
> >> Mmmmm. I'd never heard of that, a quick web search makes me think it
> >> would be nice. Any chance of an example use or mods for win32lib?
> >
> >It is in Recent User Contributions for quite some time.
> Erm, I've had stretchBlt for quite some time & used it lots, thanks..
> it is the setStretchBltMode to HALFTONE part I cannot find.

place this in the top of stretchBlt.e :

global constant xSetStretchBltMode = registerw32Function (gdi32,
"SetStretchBltMode",
{C_LONG, C_INT}, C_INT)

global constant  HALFTONE = 4

and add this just before the xStretchBlt call :

-- the image will look nicer with this, but only on
-- newer Windows versions
if w32Func (xSetStretchBltMode, {dstDC, HALFTONE}) = 0 then
    warnErr( "stretchBlt : SetStretchBltMode() failed" )
end if

I thought I have updated the file...

    Martin