[SDL] Writing directly on screen

[Paul Holt]

No, wait... translucent over the screen rather than in it's own window? On
second thoughts I don't think that can be done directly in a cross-platform
way with SDL.

On 9/26/07, Paul Holt <pcholt at gmail.com> wrote:
>
> I think PyGame would be good for this. It's a quick and easy way to use
> SDL for little projects like this. Hold on a minute I'll get you some sample
> code.
>
> On 9/26/07, Carlo Capocasa <capocasa at gmx.net> wrote:
> >
> > Thanks! Much appreciated.
> >
> > > If you mean as a way to just display text over, say, a viewed webpage,
> > > then not really.
> >
> > So in other words, there is no way to use SDL to directly manipulate
> > video memory in a cross-platform way. Or make the main SDL window
> > partially translucent. (1-bit alpha would be sufficient).
> >
> > > SDL is intended to work as an executable, independant program (is this
> > > making any sense?!) either as a Windows app or under some flavour of
> > Linux.
> >
> > Yeah. I want to run the app as a daemon/service.
> >
> > > I guess you could grab the current screen data (somehow) and then
> > > overlay your text on it, under SDL, using a full-screen mode, and
> > should
> > > the user move the mouse (for instance) then the SDL app would exit.
> > > Possible but quite tricky.
> >
> > Yeah... I have a hunch that's too much overhead for the quick
> > flashing I have in mind (exiting would actually be done by timer,
> > e.g. after 0.02 seconds).
> >
> > Need to give this some more thought... Maybe just low-level
> > programming this for all three platforms would work better.
> >
> > Thanks for your input!
> >
> > Carlo
> >
> > _______________________________________________
> > SDL mailing list
> > SDL at lists.libsdl.org
> > http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
> >
>
>
>
> --
> Paul Holt




-- 
Paul Holt
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