fxruby users - Oct 2006 - FXTreeList, single and double clicks events

Hi,

When double-clicking on an item in an FXTreeList, both SEL_CLICKED and
SEL_DOUBLECLICKED events are generated.


  @treelistframe = FXVerticalFrame.new(@group_left,
    FRAME_NONE|LAYOUT_FILL_X|LAYOUT_FILL_Y,
    0, 0, 0, 0, 0, 0, 0, 0)
    
  @tree = FXTreeList.new(@treelistframe, nil, 0, 
    LAYOUT_FILL_X|LAYOUT_FILL_Y|LAYOUT_TOP|LAYOUT_RIGHT|TREELIST_SHOWS_LINES|
    TREELIST_SHOWS_BOXES|TREELIST_ROOT_BOXES|TREELIST_EXTENDEDSELECT)

  @tree.connect(SEL_CLICKED, method(:onClick))
  @tree.connect(SEL_DOUBLECLICKED, method(:onDoubleClick))

  def onClick(sender, sel, data)
    puts "click"               
  end
  
  def onDoubleClick(sender, sel, data)
    puts "double-click"
  end


Is that a feature of Fox, or a small bug maybe?

Cheers,

---------------
Philippe Lang
Attik System

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Philippe Lang wrote:
> When double-clicking on an item in an FXTreeList, 
> both SEL_CLICKED and SEL_DOUBLECLICKED events are generated.
I believe this is common behaviour among GUI toolkits since the toolkit
cannot predict the future. After the first click, it does not know if a
second click will follow.

T.

On Wednesday 25 October 2006 03:19, fxrbu1 at gi2.herzkes.de
wrote:
> Philippe Lang wrote:
> > When double-clicking on an item in an FXTreeList, 
> > both SEL_CLICKED and SEL_DOUBLECLICKED events are generated.
> 
> I believe this is common behaviour among GUI toolkits since the toolkit
> cannot predict the future. After the first click, it does not know if a
> second click will follow.
Yes, that''s basically just how it is; its very hard to make a
prediction,
especially about the future ;-)


		- Jeroen


-- 
+----------------------------------------------------------------------------+
| Copyright (C) 18:50 10/25/2006 Jeroen van der Zijp.   All Rights Reserved. |
+----------------------------------------------------------------------------+

Hi,

For those who are interested, I think I have found a decent solution for a
little problem which was a very very big concern for me.
(Fox 1.6.0)
The workaround does nothing with FXMenuTitle (eh oui), just  SEL_FOCUSIN ,
SEL_UPDATE on FXMenubar  and a
small method   - getLastObjectWithFocus() - cast an eye on this program and
try it !!!!

require ''fox16''
include Fox

class MenuTitleWorkaround < FXMainWindow
 def initialize(pApp)
  @focus  = nil
     super(pApp, "FXMenuTitle - Workaround", nil, nil, DECOR_ALL, 20,
20,
800, 600)

  menuBar = FXMenuBar.new(self, LAYOUT_SIDE_TOP | LAYOUT_FILL_X)
  menuBar.connect(SEL_FOCUSIN) do |sender, selector, data|
   if @focus != nil
    @focus.setFocus()
    @focus = nil
   end
   0
  end
  menuBar.connect(SEL_UPDATE) do |sender, selector, data|
   @focus = getLastObjectWithFocus()
   0
  end
  menuPane = FXMenuPane.new(menuBar)
  FXMenuCommand.new( menuPane, "&firstMenuCommand")
  a =  FXMenuCommand.new( menuPane, "&Quit")
  a.connect(SEL_COMMAND) do |sender, selector, data|
   getApp.handle(self, MKUINT(FXApp::ID_QUIT, SEL_COMMAND), nil)
  end
  self.accelTable.addAccel(fxparseAccel("Alt+F4"), getApp(),
FXSEL(SEL_COMMAND, FXApp::ID_QUIT))

  FXMenuTitle.new( menuBar, "&File", nil, menuPane)

  menuPane = FXMenuPane.new(menuBar)
  FXMenuCommand.new( menuPane, "&What you want")
  FXMenuCommand.new( menuPane, "&Ect")
  FXMenuTitle.new( menuBar, "&Edit", nil, menuPane)

  splitter
FXSplitter.new(self,LAYOUT_FILL_X|LAYOUT_FILL_Y|SPLITTER_TRACKING|SPLITTER_V
ERTICAL|SPLITTER_REVERSED)
  c = FXText.new(splitter, nil, 0, LAYOUT_FILL_X|LAYOUT_FILL_Y)
  c.setText("Feeding gas into centrifuges can produce fuel for nuclear
power
plants")

  d  = FXText.new(splitter, nil, 0, LAYOUT_FILL_X|LAYOUT_FILL_Y)
  d.setText("The move is being seen as an act of international defiance by
Teheran")
  d.setFocus()
 end

   def getLastObjectWithFocus(objectClass = nil)
  childrenArray = self.children
  objectWithFocusArray = []
  childrenArray.each do |child|
   if child.hasFocus?() and (objectClass == nil or
child.kind_of?(objectClass))
    objectWithFocusArray << child
   end
   child.children.each do |grandChild|
    childrenArray << grandChild
   end
  end
  if objectWithFocusArray.length > 0
   return objectWithFocusArray[objectWithFocusArray.length - 1 ]
  else
   return nil
  end
 end
 def create
  super
  show(PLACEMENT_SCREEN)
 end
end

exit if __FILE__ != $0
puts Fox.fxrubyversion()
app=FXApp.new()
app.threadsEnabled=false  # ok
app.setDefaultCursor(DEF_MOVE_CURSOR,FXCursor.new(app))
w=MenuTitleWorkaround.new(app)
app.create
w.show
app.run


see you

G?rard M?nochet