Forum: wxRuby need help with navigation key events

Hello,

I'm having some trouble figuring out how to process navigation key 
events. I
added the following test code to my dialog box:

def initialize( .... )

   evt_navigation_key(:on_navigation_key)

end

def on_navigation_key(event)
      puts "--tab pressed--"
      puts "  event object: " + event.get_event_object.inspect
      obj = event.get_current_focus
      if obj
         puts "  current focus: " + obj.inspect
      else
         puts "  event.get_current_focus returned nil"
         puts "  current focus: " + Wx::Window.find_focus.inspect
      end

      event.skip
end

When testing the dialog box (which subclasses Wx::Dialog) there are no 
messages
when tabbing from a text control. All other controls generate the 
expected
messages. I am able however to tab through all controls in the correct 
order
both forward and back.

All my controls except for a checkbox are grouped in static boxes. I 
have tried
doing "xxxx.evt_navigation_key { |event| on_navigation_key(event) }" for 
the
text boxes as well as the static boxes that contain them to no effect.

I've also noticed unusual behavior too. When tabbing into a radio box, 
there is
no visual indication that it has the focus if the text control that 
precedes it
is enabled. If the text control is disabled then it works fine. Also, 
when doing
a shift+tab to navigate backwards, it will first go forward one control 
then
start going backwards. Lastly, two navigation events with the same 
output are
generated when cycling from the last control back to the first.

How do I get the navigation events to work properly and how can I 
capture
navigation events when a text control has the focus?

Some additional info: I'm using Windows XP SP3, all controls and static 
boxes
are children of the dialog box, all text controls are single line with 
the
TE_RICH window style.

TIA,
Walter

never mind, looks like I fixed it :-)

Problem was that I needed to place all my controls in a panel. For some 
reason,
panel.evt_navigation_key works but dialog.evt_navigation_key does not. 
This also
fixed all the weird behavior I mentioned below too.

I am curious though... what is the difference between handling 
navigation events
coming from a panel and handling the same type of events coming from a 
dialog?

Thanks,
Walter



________________________________
From: Walter Barnes <walter_barnes05@yahoo.com>
To: wxRuby Users <wxruby-users@rubyforge.org>
Sent: Fri, September 17, 2010 2:46:35 PM
Subject: [wxruby-users] need help with navigation key events


Hello,

I'm having some trouble figuring out how to process navigation key 
events. I
added the following test code to my dialog box:

def initialize( .... )

   evt_navigation_key(:on_navigation_key)

end

def on_navigation_key(event)
      puts "--tab pressed--"
      puts "  event object: " + event.get_event_object.inspect
      obj = event.get_current_focus
      if obj
         puts "  current focus: " + obj.inspect
      else
         puts "  event.get_current_focus returned  nil"
         puts "  current focus: " + Wx::Window.find_focus.inspect
      end

      event.skip
end

When testing the dialog box (which subclasses Wx::Dialog) there are no 
messages
when tabbing from a text control. All other controls generate the 
expected
messages. I am able however to tab through all controls in the correct 
order
both forward and back.

All my controls except for a checkbox are grouped in static boxes. I 
have tried
doing "xxxx.evt_navigation_key { |event| on_navigation_key(event) }" for 
the
text boxes as well as the static boxes that contain them to no effect.

I've also noticed unusual behavior too. When tabbing into a radio box, 
there is
no visual indication that it has the focus if the text control that 
precedes it
is enabled. If the text control is disabled then it works fine. Also, 
when doing
a  shift+tab to navigate backwards, it will first go forward one control 
then
start going backwards. Lastly, two navigation events with the same 
output are
generated when cycling from the last control back to the first.

How do I get the navigation events to work properly and how can I 
capture
navigation events when a text control has the focus?

Some additional info: I'm using Windows XP SP3, all controls and static 
boxes
are children of the dialog box, all text controls are single line with 
the
TE_RICH window style.

TIA,
Walter