fxruby-users

[Fxruby-users] setFocus

[Hal F. <ha...@hy...>]

Are there general rules for setFocus that I need to know?

Frequently I find that I call it and nothing happens, notably when
I show a modal dialog and try to give focus to one of its fields.


Thanks,
Hal

Re: [Fxruby-users] setFocus

[Lyle J. <ly...@kn...>]

On May 17, 2004, at 4:12 PM, Hal Fulton wrote:

> Are there general rules for setFocus that I need to know?

Umm, maybe? ;)

I would start out by reading Jeroen's documentation on how keyboard 
focus handling works in FOX:

	http://www.fox-toolkit.com/focus.html

and then follow up with him (or on the foxgui-users mailing list) if 
that still leaves unanswered questions.

Re: [Fxruby-users] setFocus

[Hal F. <ha...@hy...>]

Thanks, Lyle... I'll cc Jeroen and on this then.

I'll leave it on fxruby-users in case someone else
can learn from it.


Lyle Johnson wrote:
> 
> On May 17, 2004, at 4:12 PM, Hal Fulton wrote:
> 
>> Are there general rules for setFocus that I need to know?
> 
> 
> Umm, maybe? ;)
> 
> I would start out by reading Jeroen's documentation on how keyboard 
> focus handling works in FOX:
> 
>     http://www.fox-toolkit.com/focus.html
> 
> and then follow up with him (or on the foxgui-users mailing list) if 
> that still leaves unanswered questions.


Jeroen:

I'm trying to understand this sentence:

     "setFocus() puts a widget into the focus chain. If the toplevel
      widget had the REAL focus from the window system [the window
      manager only assigns keyboard focus to a toplevel window], then
      setFocus() generates a SEL_FOCUSIN message; note that in the
      process of child->setFocus(), the whole chain is built up by upward
      recursion, and the child does not become switched into the focus
      chain until the parent is also."

Does this mean I can't do a setFocus on a modal dialog box or its
contents? What is meant by a toplevel window -- one that stands alone,
or an actual main window?

All I'm trying to do is display a modal dialog box and give the focus
to the single text field in it. Nothing I try works.

Surely this is doable??

Thanks much,
Hal Fulton

Re: [Fxruby-users] setFocus

[jeroen <je...@fo...>]

On Saturday 22 May 2004 01:39 am, Hal Fulton wrote:
> Thanks, Lyle... I'll cc Jeroen and on this then.
>
> I'll leave it on fxruby-users in case someone else
> can learn from it.
>
> Lyle Johnson wrote:
> > On May 17, 2004, at 4:12 PM, Hal Fulton wrote:
> >> Are there general rules for setFocus that I need to know?
> >
> > Umm, maybe? ;)
> >
> > I would start out by reading Jeroen's documentation on how keyboard
> > focus handling works in FOX:
> >
> >     http://www.fox-toolkit.com/focus.html
> >
> > and then follow up with him (or on the foxgui-users mailing list) if
> > that still leaves unanswered questions.
>
> Jeroen:
>
> I'm trying to understand this sentence:
>
>      "setFocus() puts a widget into the focus chain. If the toplevel
>       widget had the REAL focus from the window system [the window
>       manager only assigns keyboard focus to a toplevel window], then
>       setFocus() generates a SEL_FOCUSIN message; note that in the
>       process of child->setFocus(), the whole chain is built up by upward
>       recursion, and the child does not become switched into the focus
>       chain until the parent is also."
>
> Does this mean I can't do a setFocus on a modal dialog box or its
> contents? What is meant by a toplevel window -- one that stands alone,
> or an actual main window?

Anything derived from FXTopWindow, in other words, a direct child of
the root window that's not a popup.

> All I'm trying to do is display a modal dialog box and give the focus
> to the single text field in it. Nothing I try works.

Perhaps one of your buttons has the BUTTON_INITIAL and BUTTON_DEFAULT
options?  Normally, such a button attracts the focus when the dialog
is first shown...


Regards,

		Jeroen


-- 
+----------------------------------------------------------------------------+
| Copyright (C) 23:50 12/11/2003 Jeroen van der Zijp.   All Rights Reserved. |
+----------------------------------------------------------------------------+