Re: [AD] [ alleg-Bugs-3102940 ] Broken on Vista

[Thomas Fjellstrom <tfjellstrom@xxxxxxxxxx>]

On November 6, 2010, Peter Wang wrote:
> On 2010-11-05, Michał Cichoń <michcic@xxxxxxxxxx> wrote:
> > > 1. Continue to accept -1 as the "default" new display adapter. When a
> > >   window is created, the WM chooses where the window will go.
> > 
> > There is not such functionality implemented under Windows right now.
> > Unless I missed something.
> 
> It should, as the documentation for al_set_new_display_adapter says:
> 
>     To return to the default behaviour, pass -1.
> 
> > > 2. Add al_get_main_adapter. When there are multiple monitors, usually
> > >   one is designated the main monitor; return its index.
> > >   Returns -1 if unknown? ("Primary" seems a better term to me.)
> > 
> > "Primary" suit better than "main". This function return index of
> > primary display, one with task bar, icons etc.
> 
> (not necessarily true of course)
> 
> > Under Windows that can
> > be any connected monitor, on other OS'es this is usually first one.
> > This function always valid index of primary adapter or -1 when there
> > are no adapter connected.
> 
> Or -1 if there is no designated primary monitor.  The xrandr tool on
> X11 has this option:
> 
>     --noprimary
> 	Don't define a primary output.
> 
> > > 3. Add al_get_active_adapter, which ideally returns the "default"
> > >   monitor where a new window would appear if the user does not
> > >   force a specific monitor.  May also return -1?
> > 
> > Active monitor is one on which you are working on. With multimonitor
> > system setup, new application window is created on monitor from which
> > you're launching application.
> 
> This may be true on Windows?  It's certainly not necessarily so on X11,
> e.g. my window manager will usually place a new application window on
> the monitor which currently contains the mouse pointer, which is
> presumably where my focus is.  Other systems may choose to place the new
> window on the monitor which contains the keyboard focus, etc.
> 
> > That will happen unless you force OS do
> > to place window at very specific point. Current Windows implementation
> > always create window centered on the first available monitor by
> > default.
> > This function return valid index of active adapter or -1 if index
> > cannot be determined.
> 
> Is there any reason the user shouldn't just call
> al_set_new_display_adapter(-1); and let the system choose?

As far as I know, windows doesn't choose. Apps have to specify where to go 
them selves afaik. 

And some X wm's might be just as brain-dead. (though most aren't I would 
think).

> > > I was planning to release Allegro 5.0 RC1 this weekend (7th).
> > > It can be delayed to next weekend (14th).
> > 
> > I think Allegro should be released this weekend. This is big fix which
> > include not only window creation but also fullscreen support (yap,
> > also broken on multi-monitor system). 5.1 is target for this fix. Two
> > days or even week is not enough to test new implementation properly.
> 
> Ok.
> 
> Peter
> 
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-- 
Thomas Fjellstrom
tfjellstrom@xxxxxxxxxx