Question

So I’m learning wxPython and to do so I’m working on a text editor. I know that I can intercept a CUT / COPY / PASTE signal generated from a control, such as wx.TextCtrl by binding the equivalent wx.EVT_TEXT_COPY / wx.EVT_TEXT_PASTE / wx.EVT_TEXT_CUT. What I’m having trouble figuring out is how to override say a paste to the clipboard with other text.

For instance I have a wx.ListBox where a user can store clips of text and then select them latter to paste onto the wx.TextCtrl instead of whatever text is on the system clipboard. So basically I’m trying to intercept the paste signal and in lieu of pasting the system clipboard text have it paste the selected line from the wx.ListBox. Is this possible? If so, how would I go about doing this?

Answer 1

A simple solution is not to use Skip() in your wx.EVT_TEXT_PASTE handler and update control manually, e.g:

    textCtrl.Bind(wx.EVT_TEXT_PASTE, self.onPaste)

def onPaste(self, evt):
    #do not use evt.Skip()
    print "PASTE but nothing happens"
    #do some manual update of the control

The evt.Skip() would cause to propagate the event and execute default behaviour which pastes content. Without the call you block the propagation and you are able to replace the default behaviour.