Re: [Gimp-developer] 32 bit bmp files again

[Pavel <pavel pamsoft cz>]

My last experience was with Windows Vista and functions like BitBlt were
definitively not aware of alpha channel. The only Windows API which
seemed to do something with alpha channel was AlphaBlend and
TransparentBlt, but I have never managed to get it work. Maybe it works
on Windows 7 or newer, but I have some doubts about it.

Anyway, I think that most of the image applications rely on BitBlt,
MaskBlt and StretchBlt, or StretchDIbits, none of them is alpha aware.

On Sun, 2014-08-03 at 21:08 +0200, Teo Mazars wrote:
> > Hi Todd,
> >
> > just my impression and feelings: 32 bit BMP is an oxymoron. MS has
> > designed that format, but never managed to implement it.
>
> [...]
>
> > In other words, you can create 32-bit BMP file, but you will hardly
> > find
> > a software capable of reading it.
> >
> > Pavel
>
> You mean that even the Windows API is not be able to load images exported in the latest versions of the BMP 
> format? OMG Oo. If that is true, then that nails the issue...
>
> Téo