Re: FVWM: Java applications don't get keyboard focus

On Mon, 31 Jul 2017 18:17:37 -0400 (EDT)
Robert Heller <[email protected]> wrote:

> At Mon, 31 Jul 2017 17:23:59 -0400 Dan Espen <[email protected]> wrote:
> 
> > 
> > Robert Heller <[email protected]> writes:
> > 
> > > At  Robert Heller <[email protected]> wrote:
> > >
> > >> 
> > >> I am trying to use the Arduino IDE and it is not letting me give it keyboard
> > >> focus. I too am using FVWM. Even when I launch it in its own desktop, it does
> > >> not work. I cannot seem to make the Arduino IDE take keyboard focus, I can
> > >> click endlessly on the window and nothing happens. I can use the menus and
> > >> click anywhere in the sketch window and move the input position (with the
> > >> mouse, never with the keyboard). I don't want to hack the Arduino IDE code
> > >> itself, unless that is the only solution. Is there something in .fvwm2rc I can
> > >> set to fix this? The Arduino IDE *used* to work just fine. I *guessing* it is
> > >> something about the newer versions of CentOS (presently CentOS 6, kernel
> > >> version 2.6.32-696.6.3.el6.x86_64) or FVWM (2.6.6-1.el6) I am using now (the
> > >> last time I was sure it was working was with CentOS 5 and fvwm
> > >> 2.5.26-2.el5.2). Even when I force the Arduino IDE to use Java 1.6, it still
> > >> does not work. I have version 1.0.5 of the Arduino IDE. 
> > >
> > > OK, it appears that Java apps (or at least the Arduino IDE) does not really 
> > > like:
> > >
> > > Style "*" !FPFocusByProgram
> > >
> > > I added:
> > >
> > > Style "*Arduino* FPFocusByProgram
> > >
> > > and the Arduino IDE is now working properly.
> > >
> > > Why is that?
> > 
> > I haven't looked at any code but the documentation
> > says:
> > 
> >   The FPFocusByProgram style allows windows to take the focus themselves.

Wow! FPFocusByProgram combined with FPLenient solved my problem with Java GUI.
It seems it has no visible side-effects.
Thanks very much!
P.


> > 
> > So, my guess is that Arduino is using XSetInputFocus()
> > and does not like getting focus any other way.
> > Programs should allow the window manager to control focus.
> 
> It is not "Arduino" as much as OpenJDK is doing that.
> 
> > 
> 
> -- 
> Robert Heller             -- 978-544-6933
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>

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