Finding which control has focus
Larry Bates
larry.bates at websafe.com
Thu Oct 4 07:46:18 PDT 2007
Robin Dunn wrote:
> Larry Bates wrote:
>> I have a frame that contains 6 controls: ComboBox, ExpandoTextCtrl,
>> and 2 list controls, cancel button, send button. I want to know if
>> there is some way to
>> trap the fact that a user clicked the mouse on the ComboBox,
>> ExpandoTextCtrl or
>> either of the 2 list controls. I would like to make the label bold to
>> show which control has the focus. onSetFocus/onKillFocus doesn't fire
>> when you click on these controls. I can't even get it to fire when I
>> do MyExpandoTextCtrl.SetFocus() (but the focus does change) Is there
>> some other way? I don't have these on separate windows or panels.
>
>
> How are you binding the events to those methods? (Some sample code is
> worth 1000 words...)
>
> To answer the question in your Subject, there is the wx.Window.FindFocus
> static method.
>
>
Here is a working example of my problem. I've stripped it down as much as I
could. I just can't seem to get any of the focus events to fire/call my
methods. Thanks for taking a look.
Regards,
Larry
import wx
from wx.lib.expando import ExpandoTextCtrl
import wx.lib.mixins.listctrl as listmix
#----------------------------------------------------------------------
class usernamesListCtrl(wx.ListCtrl, listmix.ListCtrlAutoWidthMixin):
def __init__(self, parent, ID, style=0, pos=wx.DefaultPosition,
size=wx.DefaultSize):
wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
#
# Use ListCtrlAutoWidthMixin to extend the width of the last column so
# that it fills line to the end of the table.
#
listmix.ListCtrlAutoWidthMixin.__init__(self)
#
# Insert 2 columns in the usernames list (name, email)
#
self.InsertColumn(0, 'Name', format=wx.LIST_FORMAT_LEFT, width=180)
self.InsertColumn(1, 'Username', format=wx.LIST_FORMAT_LEFT, width=-1)
def onSetFocus(self, event):
print "LCU.onSetFocus triggered"
window=self.FindFocus()
print "LCU window=", window
event.Skip()
def onKillFocus(self, event):
print "LCU.onKillFocus triggered"
window=self.FindFocus()
print "LCU window=", window
event.Skip()
class filenamesListCtrl(wx.ListCtrl, listmix.ListCtrlAutoWidthMixin):
# listmix.ColumnSorterMixin):
def __init__(self, parent, ID, pos=wx.DefaultPosition,
size=wx.DefaultSize, style=0):
wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
#
# Use ListCtrlAutoWidthMixin to extend the width of the last column so
# that it fills line to the end of the table.
#
listmix.ListCtrlAutoWidthMixin.__init__(self)
#
# Insert 2 columns in the filenames list (filename, size)
#
self.InsertColumn(0, 'Filename', format=wx.LIST_FORMAT_LEFT, width=350)
self.InsertColumn(1, 'Size', format=wx.LIST_FORMAT_RIGHT, width=-1)
def onSetFocus(self, event):
print "LCF.onSetFocus triggered"
window=self.FindFocus()
print "LCF window=", window
event.Skip()
def onKillFocus(self, event):
print "LCF.onKillFocus triggered"
window=self.FindFocus()
print "LCF window=", window
event.Skip()
class fromComboBox(wx.ComboBox):
'''
fromComboBox - This class handles the From: combo box
'''
def __init__(self, parent):
self.parent=parent
wx.ComboBox.__init__(self, parent, -1,
pos=(0,0), size=(-1,-1),
style=wx.CB_DROPDOWN | wx.CB_SORT | wx.TE_PROCESS_ENTER)
def onSetFocus(self, event):
print "FCB.onSetFocus triggered"
window=self.FindFocus()
print "FCB window=", window
event.Skip()
def onKillFocus(self, event):
print "FCB.onKillFocus triggered"
window=self.FindFocus()
print "FCB window=", window
event.Skip()
class toExpandoTextCtrl(ExpandoTextCtrl):
def onSetFocus(self, event):
print "TTC.onSetFocus triggered"
window=self.FindFocus()
print "TTC window=", window
event.Skip()
def onKillFocus(self, event):
print "TTC.onKillFocus triggered"
window=self.FindFocus()
print "TTC window=", window
event.Skip()
class MyFrame(wx.Frame):
def __init__(self, *args, **kwds):
wx.Frame.__init__(self, *args, **kwds)
self.Centre(wx.HORIZONTAL)
self.STS = self.CreateStatusBar(1)
# -----From: Combo box ------------------------------------------------
self.label_from = wx.StaticText(self, -1, "From:")
self.FCB=fromComboBox(self)
# -----To: Expando text control ----------------------------------------
self.label_to = wx.StaticText(self, -1, "To:")
self.TTC=toExpandoTextCtrl(self, size=(-1, -1))
self.TTC.SetFocus()
# -----Search instructions --------------------------------------------
msg="(type a few characters of the name or email address to filter " \
"the list)"
self.label_searchinstructions = wx.StaticText(self, -1, msg)
# -----Usernames list control -----------------------------------------
hdr="WebSafe users that have given you a key:"
self.sizer_usernames_staticbox = wx.StaticBox(self, -1, hdr)
self.LCU=usernamesListCtrl(self, -1, style=wx.LC_REPORT|
wx.SUNKEN_BORDER|
wx.LC_HRULES |
wx.LC_VRULES)
# -----Filenames list control -----------------------------------------
msg="Files to be sent:"
self.sizer_filenames_staticbox = wx.StaticBox(self, -1, msg)
self.LCF=filenamesListCtrl(self, -1, style=wx.LC_REPORT|
wx.SUNKEN_BORDER|
wx.LC_HRULES |
wx.LC_VRULES)
# -----Cancel & Send buttons ------------------------------------------
self.button_cancel = wx.Button(self, -1, "Cancel")
self.button_send = wx.Button(self, -1, "Send")
self.__set_properties()
self.__do_layout()
# -----Bind events to the appropriate handlers ------------------------
self.Bind(wx.EVT_SET_FOCUS, self.onSetFocus)
self.Bind(wx.EVT_KILL_FOCUS, self.onKillFocus)
self.Bind(wx.EVT_SET_FOCUS, self.FCB.onSetFocus, self.FCB)
self.Bind(wx.EVT_KILL_FOCUS, self.TTC.onKillFocus, self.FCB)
self.Bind(wx.EVT_SET_FOCUS, self.TTC.onSetFocus, self.TTC)
self.Bind(wx.EVT_KILL_FOCUS, self.TTC.onKillFocus, self.TTC)
self.Bind(wx.EVT_SET_FOCUS, self.LCU.onSetFocus, self.LCU)
self.Bind(wx.EVT_KILL_FOCUS, self.LCU.onKillFocus, self.LCU)
self.Bind(wx.EVT_SET_FOCUS, self.LCF.onSetFocus, self.LCF)
self.Bind(wx.EVT_KILL_FOCUS, self.LCF.onKillFocus, self.LCF)
return
def __set_properties(self):
self.SetTitle("WebSafe SendTo")
frameSize=(560, -1)
self.SetSize(frameSize)
self.SetMinSize(frameSize)
self.LCU.SetMinSize((-1,200))
self.LCF.SetMinSize((-1,160))
bgc=wx.SystemSettings_GetColour(wx.SYS_COLOUR_MENUBAR)
self.SetBackgroundColour(bgc)
self.label_searchinstructions.SetFont(wx.Font(7.5, wx.DEFAULT,
wx.NORMAL, wx.NORMAL, 0, ""))
def __do_layout(self):
sizer_frame = wx.BoxSizer(wx.VERTICAL)
grid_sizer_main = wx.FlexGridSizer(5, 2, 5, 5)
grid_sizer_buttons = wx.FlexGridSizer(1, 3, 0, 0)
sizer_filenames = wx.StaticBoxSizer(self.sizer_filenames_staticbox,
wx.HORIZONTAL)
sizer_usernames = wx.StaticBoxSizer(self.sizer_usernames_staticbox,
wx.HORIZONTAL)
sizer_6 = wx.BoxSizer(wx.HORIZONTAL)
grid_sizer_main.Add(self.label_from, 0,
wx.RIGHT|wx.ALIGN_RIGHT|wx.ALIGN_CENTER_VERTICAL, 0)
grid_sizer_main.Add(self.FCB, 0, wx.EXPAND, 0)
grid_sizer_main.Add(self.label_to, 0,
wx.RIGHT|wx.ALIGN_RIGHT|wx.ALIGN_CENTER_VERTICAL, 0)
grid_sizer_main.Add(self.TTC, 0, wx.EXPAND, 0)
grid_sizer_main.Add((20,20), 0, 0, 0, 0)
sizer_6.Add((0,30), 0, 0, 0, 0)
sizer_6.Add(self.label_searchinstructions, 0,
wx.LEFT|wx.RIGHT|wx.ALIGN_TOP, 5)
grid_sizer_main.Add(sizer_6, 1, wx.EXPAND, 0)
grid_sizer_main.Add((20, 20), 0, 0, 0)
sizer_usernames.Add(self.LCU, 1, wx.EXPAND, 0)
grid_sizer_main.Add(sizer_usernames, 1, wx.EXPAND, 0)
grid_sizer_main.Add((20, 20), 0, 0, 0)
sizer_filenames.Add(self.LCF, 1, wx.EXPAND, 0)
grid_sizer_main.Add(sizer_filenames, 1, wx.EXPAND, 0)
grid_sizer_main.Add((20, 20), 0, 0, 0)
grid_sizer_buttons.Add((20, 20), 0, 0, 0)
grid_sizer_buttons.Add(self.button_cancel, 0, 0, 0)
grid_sizer_buttons.Add(self.button_send, 0, wx.LEFT, 10)
grid_sizer_buttons.AddGrowableCol(0)
grid_sizer_main.Add(grid_sizer_buttons, 1, wx.EXPAND, 0)
grid_sizer_main.AddGrowableRow(2)
grid_sizer_main.AddGrowableRow(3)
grid_sizer_main.AddGrowableCol(1)
sizer_frame.Add(grid_sizer_main, 1, wx.ALL|wx.EXPAND, 10)
self.SetSizer(sizer_frame)
self.Layout()
self.Fit()
def onSetFocus(self, event):
print "MyFrame.onSetFocus triggered"
window=self.FindFocus()
print "MyFrame onSetFocus window=", window
event.Skip()
def onKillFocus(self, event):
print "MyFrame.onKill Focus triggered"
window=self.FindFocus()
print "MyFrame onKillFocus window=", window
event.Skip()
if __name__ == "__main__":
#
# Define instance wxWindows
#
app=wx.PySimpleApp(0)
wx.InitAllImageHandlers()
frame_1 = MyFrame(None, -1, "",)
app.SetTopWindow(frame_1)
frame_1.Show()
#
# All done, remove the message.
#
app.MainLoop()
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