Problems using SetDropTarget

[Claudia Frank]

Hello,

If I run this code I do get a segmentation fault on exit.
I figured out, that this happens only when using SetDropTarget more than once.
Did I miss something?

Cheers
Claudia


Running on
Distributor ID : Ubuntu
Description    : Linux Lite 2.8
Release        : 14.04
Codename       : trusty

3.0.2.0 gtk2 (classic)
2.7.6 (default, Jun 22 2015, 18:00:18)
[GCC 4.8.2]

Segmentation fault

#!/usr/bin/python
# -*- coding: utf-8 -*-

import wx
import wx.lib.agw.fourwaysplitter as fws

class DROP_TARGET(wx.DropTarget):
    def __init__(self):
        super(DROP_TARGET, self).__init__()
        self.data = wx.BitmapDataObject()
        self.SetDataObject(self.data)

    def OnEnter(self, x, y, d):
        return d

    def OnLeave(self):
        pass

    def OnDrop(self, x, y):
        return True

    def OnDragOver(self, x, y, d):
        return d

    def OnData(self, x, y, d):
        self.GetData()
        return d

class DemoFrame(wx.Frame):

    def __init__(self, *args, **kwargs):
        super(DemoFrame, self).__init__(*args, **kwargs)

        self.drop_target = DROP_TARGET()
        splitter = fws.FourWaySplitter(self, -1, agwStyle=wx.SP_LIVE_UPDATE)
        for colour in [wx.RED, wx.WHITE, wx.BLUE, wx.GREEN]:
            panel = wx.Panel(splitter)
            panel.SetBackgroundColour(colour)
            # if colour is wx.RED:
            panel.SetDropTarget(self.drop_target)
            splitter.AppendWindow(panel)

           
def main():
    app = wx.App(redirect=False)
    _frame = DemoFrame(None, title='TEMPLATE', size=(800,600))
    app.SetTopWindow(_frame)
    _frame.Show(True)
    app.MainLoop()
    app = None
   
main()

[Claudia Frank]

Hello,

looks like I found the reason, the drop target instance cannot be reused,
instead it is needed to recreate it every time you need to assign it
to a different control. Not sure if this works as expected but if so,
maybe a hint in the documentation might be useful.

Thanks
Claudia