BF: translation of button labels were broken

Author: hsogo

psychopy/app/preferencesDlg.py

@@ -503,15 +503,15 @@ def __init__(self, app):
 
         # dialog controls, have builtin localization
         sdbControls = wx.BoxSizer(wx.HORIZONTAL)
-        self.sdbControlsHelp = wx.Button(self.pnlMain, wx.ID_HELP)
+        self.sdbControlsHelp = wx.Button(self.pnlMain, wx.ID_HELP, _translate(" Help "))
         sdbControls.Add(self.sdbControlsHelp, 0,
                         wx.LEFT | wx.ALL | wx.ALIGN_CENTER_VERTICAL,
                         border=3)
         sdbControls.AddStretchSpacer()
         # Add Okay and Cancel buttons
-        self.sdbControlsApply = wx.Button(self.pnlMain, wx.ID_APPLY)
-        self.sdbControlsOK = wx.Button(self.pnlMain, wx.ID_OK)
-        self.sdbControlsCancel = wx.Button(self.pnlMain, wx.ID_CANCEL)
+        self.sdbControlsApply = wx.Button(self.pnlMain, wx.ID_APPLY, _translate(" Apply "))
+        self.sdbControlsOK = wx.Button(self.pnlMain, wx.ID_OK, _translate(" OK "))
+        self.sdbControlsCancel = wx.Button(self.pnlMain, wx.ID_CANCEL, _translate(" Cancel "))
         if sys.platform == "win32":
             btns = [self.sdbControlsOK, self.sdbControlsApply, self.sdbControlsCancel]
         else: