Re: St.ButtonMask bug

[Emmanuele Bassi <ebassi gmail com>]

On 2011-08-19 at 13:11, Antonio Hernández Díaz wrote:
> Yes, it is binary. The real problem comes when you try to handle a mouse
> right click.
> 
> If you write a callback for a "button-press-event" signal and try to get the
> pressed button,
> for a right click you get event.get_button() == 3, and there isn't a mask
> with that value.

you don't use masks for that.

button identifiers are numeric (it's a trait shared between X11, GDK and
Clutter) because the pointer device can have a non-standard layout, can
be user-rearranged, or can be left or right oriented.

> I don't know what's the expected behaviour, but the values are:
> 
>                       get_button()   |   ButtonMask
> left click                 1                       1
> middle click            2                       2
> right click               3                       4

the first column should really be:

  primary
  middle
  secondary

where primary is usually the left-most button in a right-handed layout,
and secondary is the right-most button in the same layout.

> Do I have to write a comparison like event.get_button()

just use the numeric id, as you did above:

  if (event.get_button() == 1) {
      ...
  }

ciao,
 Emmanuele.

W: http://www.emmanuelebassi.name
B: http://blogs.gnome.org/ebassi