wxGrid and Focus Event

[lux]

Hi,
How can I capture the EVT_SET_FOCUS on a wxGrid?

Tank's in advance
Luca

[Paul McNett]

lux wrote:

How can I capture the EVT_SET_FOCUS on a wxGrid?

If you want to catch when the grid as a whole gets the focus, use:

grid.Bind(wx.gr id.EVT_SET_FOCU S, self.onGridFocu s)

If you want to catch when a cell in the grid gets the focus, use:
grid.Bind(wx.gr id.EVT_GRID_SEL ECT_CELL, self.onCellSele cted)

And, your questions will be better on the wxpython-users list at
http://wxpython.org/maillist.php
--
Paul McNett
http://paulmcnett.com
http://dabodev.com

[Paul McNett]

Paul McNett wrote:

lux wrote:

How can I capture the EVT_SET_FOCUS on a wxGrid?

If you want to catch when the grid as a whole gets the focus, use:

>>> grid.Bind(wx.gr id.EVT_SET_FOCU S, self.onGridFocu s)
Oops, my bad:
grid.Bind(wx.EV T_SET_FOCUS, self.onGridFocu s)

If you want to catch when a cell in the grid gets the focus, use:
>>> grid.Bind(wx.gr id.EVT_GRID_SEL ECT_CELL, self.onCellSele cted)

And, your questions will be better on the wxpython-users list at
http://wxpython.org/maillist.php

--
Paul McNett
http://paulmcnett.com
http://dabodev.com

[lux]

Can you try this code?

If you press only the TAB key
the focus go from the TextCtrl to the Grid (I suppose)
but onGridFocus in not called.

any idea?
Luca.
############### ###

import wx
import wx.grid

app = wx.PySimpleApp( )

f = wx.Frame(None, -1, "")
p = wx.Panel(f, -1)
s = wx.BoxSizer(wx. VERTICAL)

t1 = wx.TextCtrl(p)
s.Add(t1)

g = wx.grid.Grid(p, -1)
g.CreateGrid(2, 2)
s.Add(g, 1, wx.EXPAND)

def onGridFocus(evt ):
print "onGridFocu s"
evt.Skip()

def onCellSelected( evt):
print "onCellSelected "
evt.Skip()

g.Bind(wx.grid. EVT_GRID_SELECT _CELL, onCellSelected)
g.Bind(wx.EVT_S ET_FOCUS, onGridFocus)

p.SetSizer(s)
f.Show()

app.MainLoop()

############### ###

[Paul McNett]

lux wrote:

Can you try this code?
Sure, thanks for posting it!

If you press only the TAB key
the focus go from the TextCtrl to the Grid (I suppose)
but onGridFocus in not called.
Confirmed, at least on Gtk.

any idea?

Yep, the grid is actually a collection of subwindows, and I made the guess that
the first window to get the focus is actually that little corner window at the
intersection of the column labels and the row labels. Try this instead:

g.GetGridCorner LabelWindow().B ind(wx.EVT_SET_ FOCUS, onGridFocus)

--
Paul McNett
http://paulmcnett.com
http://dabodev.com

[lux]

TANKS!!!
Now it work!!!

Luca

[Paul McNett]

lux wrote:

TANKS!!!
Now it work!!!

Not so fast. I've found out that I had to do the following ugly workaround to
ensure it works in all cases:

def _initEvents(sel f):
...
if self.BaseClass. __name__ == "dGrid":
## Ugly workaround for grids not firing focus events from the keyboard
## correctly.
self._lastGridF ocusTimestamp = 0.0
self.GetGridCor nerLabelWindow( ).Bind(wx.EVT_S ET_FOCUS, self.__onWxGotF ocus)
self.GetGridCol LabelWindow().B ind(wx.EVT_SET_ FOCUS, self.__onWxGotF ocus)
self.GetGridRow LabelWindow().B ind(wx.EVT_SET_ FOCUS, self.__onWxGotF ocus)
self.GetGridWin dow().Bind(wx.E VT_SET_FOCUS, self.__onWxGotF ocus)
self.Bind(wx.EV T_SET_FOCUS, self.__onWxGotF ocus)
...
def __onWxGotFocus( self, evt):
if self.BaseClass. __name__ == "dGrid":
## Continuation of ugly workaround for grid focus event. Only raise the
## Dabo event if we are reasonably sure it isn't a repeat.
prev = self._lastGridF ocusTimestamp
now = self._lastGridF ocusTimestamp = time.time()
if now-prev < .05:
return
self.raiseEvent (dEvents.GotFoc us, evt)

--
Paul McNett
http://paulmcnett.com
http://dabodev.com

[Bugs]

So Paul, are you saying there's a bug with the wxGrid control and if so,
do you know if there's been a bug-report submitted to the wxWidgets
and/or wxPython folks?
Or is this just the way the wxGrid control works?
Thanks!
Paul McNett wrote:

Not so fast. I've found out that I had to do the following ugly
workaround to ensure it works in all cases:

[Paul McNett]

Bugs wrote:

So Paul, are you saying there's a bug with the wxGrid control and if so,
Yes, I think it is a bug.

do you know if there's been a bug-report submitted to the wxWidgets
and/or wxPython folks?
I don't know, but I've been meaning to check.

Or is this just the way the wxGrid control works?
Thanks!

wxPython/wxWidgets, like any GUI toolkit, is pretty complex. For the most part
all the commonly-needed things work just fine - it is when you venture into the
less-used things that you get into trouble.

If I filed a proper bug report for everything wrong with wxPython/wxWidgets, I'd
probably not get anything else done. But on the other hand you couldn't force me
to stop using wxPython if you tried!
--
Paul McNett
http://paulmcnett.com
http://dabodev.com

[Bugs]

Paul McNett wrote:

If I filed a proper bug report for everything wrong with
wxPython/wxWidgets, I'd probably not get anything else done. But on the
other hand you couldn't force me to stop using wxPython if you tried!

Like any open-source software, the community is what makes it better.
I agree, it's still a great toolkit even with the bugs.
But think how much better a toolkit it would be with fewer bugs! =)

Thanks Paul