Re: [Gtk2hs-users] mouse button patch (for buttons 4,5,6,7)

[Peter H. <pe...@sy...>]

ha...@li... wrote:
> Axel Simon wrote:
> The documentation at
> http://library.gnome.org/devel/gdk/unstable/gdk-Event-Structures.html#id2919978
> claims
> 
> "guint button; 	the button which was pressed or released, numbered from 1 to 5.
> Normally button 1 is the left mouse button, 2 is the middle button, and 3 is the
> right button. On 2-button mice, the middle button can often be simulated by
> pressing both mouse buttons together."
> 
> So while I do not use gtk/gtk2hs I suspect that the button index can only reach
> up to 5 in the present code.
> 
> That said, it is also apparent that they could easily extend this in future
> releases to any guint value.
> 
> So why are MouseButton6 and 7 needed?
> 
>>   data MouseButton = LeftButton
>>                   | MiddleButton
>>                   | RightButton
>>                   | MouseButton4
>>                   | MouseButton5
>>                     deriving (Eq,Show)
> 
> If you want to be paranoid about crashing, then you would need:
> 
>>   data MouseButton = LeftButton
>>                   | MiddleButton
>>                   | RightButton
>>                   | MouseButton4
>>                   | MouseButton5
>>                   | MouseButtonUInt Word32
>>                     deriving (Eq,Show)
> 

That is very possibly correct that buttons 6 and 7 cannot be used now. I have
  only 5 button mouse with wheel (so plus scroll up and down). So stripping it
  down to 5 buttons tops is ok for me. But may not be for others (possibly only
  after gtk gets extended too). I added also 6th and 7th button since my brother
  has a mouse with 7 (standard) buttons plus a wheel. I do not know if my version
  of gtk can process the additional buttons. I tested with my mouse only.
I'm glad you decided to apply at least the changes for button 4 and 5 though :-D

Peter.