[wxPython-users] BitmapButton shows focus erroneously

[Robin Dunn]

Jeffrey Barish wrote:
> Consider the attached program.  The BitmapButton has a left arrow (taken
> from the demo program).  It changes to a right arrow when the button has
> focus.  The button should never have focus because the handler for the set
> focus event assigns the focus to the TextCtrl.  However, if you click on
> the button or hit tab, the button will show the telltale dashed line
> indicating that it has focus and the bitmap will change to the right arrow. 
> It doesn't really have focus, though, as keyboard input still goes to the
> TextCtrl.  The BitmapButton seems to be in a strange state where it thinks
> that it has focus but doesn't.

Because it has already lost the focus (and processed that event) before 
it has a chance to finish processing the EVT_SET_FOCUS event.  If you 
defer the call to SetFocus then it will work as you expect.

     def doSetFocusEvent(self, event):
         wx.CallAfter(self.textctrl.SetFocus)
         event.Skip()


-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!