Composit manager question

Oleg Sukhodolsky son.two at
Sat Aug 12 09:59:11 EEST 2006

Ok, thank you for explanation, more words make it more clear for me :)


On 12 Aug 2006 07:15:59 +0200, Soeren Sandmann <sandmann at> wrote:
> "Oleg Sukhodolsky" <son.two at> writes:
> > EWMH defines a _NET_WM_WINDOW_OPACITY hint to tell a composite manager to make
> > the window translucent.
> No it doesn't, and it would be a mistake to add it in my opinion.
> > Modern application require an alpha-mask to be set to make some
> > areas of the window fully transparent, others to be semi-transparent
> > and the rest to be fully opaque.  So the questions: 1. Is or will be
> > there a standard way to set the opacity-mask by means of a hint?
> > 2. If there's no a composite manager running, or the composite
> > manager doesn't support the feature (like old and sweet xcompmgr :)
> > ), what is the right way to set such a mask?
> As Daniel said, the answer is to use an ARGB32 visual, which means
> requesting that the pixels in the window are 32 bits deep, with 8 of
> those bit being interpreted as an alpha value. Hence the name
> "ARGB32". Alpha, Red, Green, Blue - 32 bits.
> Soren

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