WxPython, Linking a double click event to specific list box's, opposed to all

Question

I am currently building a GUI, and im using listbox's, the user will double click an item in a list box and the selected item is passed to the code. This works fine, but the problem I am having is that I cannot seem to link the DoubleClick event to a single list box, I just get errors and the program wont run, whenever i try and add an identifier.

The code that works but with no identifer is:

serverlistbox=wx.ListBox(panel1, -1, (300,80), (180,180), serverfilelist, wx.LB_SINGLE)
serverlistbox.SetSelection(0)

self.Bind(wx.EVT_LISTBOX_DCLICK, self.doubleclick)

And the function that handles the data:

 def doubleclick(self,event):
    index = event.GetSelection()
    downloadselect = serverfilelist[index]
    wx.MessageBox('Starting download of ' +str(serverfilelist[index]))

So the EVT is the important bit, i want to link it ONLY to the serverlist box, opposed to all my list box's. Ive tried:

self.Bind(wx.EVT_LISTBOX_DCLICK, self.doubleclick, self.serverlistbox)
self.Bind(wx.EVT_LISTBOX_DCLICK, self.serverlistbox, self.doubleclick)
self.Bind(wx.EVT_LISTBOX_DCLICK, -1, self.doubleclick)

All of the above fail. Please help!!!

Answer 1

your first option should work:

self.Bind(wx.EVT_LISTBOX_DCLICK, self.doubleclick, self.serverlistbox)

You have some problems that make the code fail: you are indexing serverfilelist in the doubleclick method. However, that list is not accessible inside the method. Probably you should do something like:

self.serverfilelist = serverfilelist
self.serverlistbox = wx.ListBox(panel1, -1, (300,80), (180,180), self.serverfilelist, wx.LB_SINGLE)
self.serverlistbox.SetSelection(0)

self.Bind(wx.EVT_LISTBOX_DCLICK, self.doubleclick, self.serverlistbox)

def doubleclick(self, event):
    index = event.GetSelection()
    downloadselect = self.serverfilelist[index]
    wx.MessageBox('Starting download of %s' % str(downloadselect)

Also if you instantiate serverlistbox as an attribute of the class:

self.serverlistbox = wx.ListBox(panel1, ....  

then you could call directly self.serverlistbox.GetSelection in the method without using the event.

I recommend however the use of:

downloadselect = self.serverlistbox.GetStringSelection()

Then, your method is simplified to:

def doubleclick(self, event):
    downloadselect = self.serverlistbox.GetStringSelection()
    wx.MessageBox('Starting download of %s' % downloadselect