Re: [wxhaskell-users] How to make the Filter programm?

[Daan L. <daa...@xs...>]

Hi Shelarcy,

On Fri, 09 Apr 2004 19:27:57 +0900, shelarcy <she...@ca...> wrote:
> I was making a Filter (Low pass Filter) programm in wxHaskell.
> [snip]
>
>                     im <- imageCreateFromBitmap bm
>                     pxe <- imageGetPixelBuffer im
> [snip]
>                     fillpixelBuffer pxe
>                     bm2  <- bitmapCreateFromImage im (-1)
> [snip]
>
> But these code doesn't work.
>
> Where is wrong?

I think that when you get the pixelbuffer from an image, you get a fresh copy
and you are not manipulating the image itself. So, you probably need to use
"imageCreateFromPixelBuffer" to create a new "image" from the pixelbuffer again.
(See the "PaintDirect" sample in the contrib directory)

I hope this helps,
All the best,
  Daan.