[EMAIL PROTECTED] wrote:
> I am a newbie. I was looking for some code where I could a list of
> different items from a file and display it in a list box. Then give a
> user the capability to select some.
>
> Basically, reading and writing to a file and displaying them in
> different widgets...thats something I am looking for. If anybody can
> point me to some good example tutorials...I will be greatly helped.
>
> Thanks,
>
> Every help is appreciated
>
Have you tried looking at the code in the wxPython demo? In the ListBox
control demo, it populates a ListBox with items from a list, but you
could easily translate that into reading from a file, I think. Here's
the full code in case you don't have the demo:
>
> import wx
>
> #---------------------------------------------------------------------------
>
> # This listbox subclass lets you type the starting letters of what you want to
> # select, and scrolls the list to the match if it is found.
> class FindPrefixListBox(wx.ListBox):
> def __init__(self, parent, id, pos=wx.DefaultPosition,
> size=wx.DefaultSize,
> choices=[], style=0, validator=wx.DefaultValidator):
> wx.ListBox.__init__(self, parent, id, pos, size, choices, style,
> validator)
> self.typedText = ''
> self.log = parent.log
> self.Bind(wx.EVT_KEY_DOWN, self.OnKey)
>
>
> def FindPrefix(self, prefix):
> self.log.WriteText('Looking for prefix: %s\n' % prefix)
>
> if prefix:
> prefix = prefix.lower()
> length = len(prefix)
>
> # Changed in 2.5 because ListBox.Number() is no longer supported.
> # ListBox.GetCount() is now the appropriate way to go.
> for x in range(self.GetCount()):
> text = self.GetString(x)
> text = text.lower()
>
> if text[:length] == prefix:
> self.log.WriteText('Prefix %s is found.\n' % prefix)
> return x
>
> self.log.WriteText('Prefix %s is not found.\n' % prefix)
> return -1
>
>
> def OnKey(self, evt):
> key = evt.GetKeyCode()
>
> if key >= 32 and key <= 127:
> self.typedText = self.typedText + chr(key)
> item = self.FindPrefix(self.typedText)
>
> if item != -1:
> self.SetSelection(item)
>
> elif key == wx.WXK_BACK: # backspace removes one character and
> backs up
> self.typedText = self.typedText[:-1]
>
> if not self.typedText:
> self.SetSelection(0)
> else:
> item = self.FindPrefix(self.typedText)
>
> if item != -1:
> self.SetSelection(item)
> else:
> self.typedText = ''
> evt.Skip()
>
> def OnKeyDown(self, evt):
> pass
>
>
> #---------------------------------------------------------------------------
>
> class TestListBox(wx.Panel):
> def __init__(self, parent, log):
> self.log = log
> wx.Panel.__init__(self, parent, -1)
>
> sampleList = ['zero', 'one', 'two', 'three', 'four', 'five',
> 'six', 'seven', 'eight', 'nine', 'ten', 'eleven',
> 'twelve', 'thirteen', 'fourteen']
>
> wx.StaticText(self, -1, "This example uses the wx.ListBox control.",
> (45, 10))
> wx.StaticText(self, -1, "Select one:", (15, 50))
> self.lb1 = wx.ListBox(self, 60, (100, 50), (90, 120), sampleList,
> wx.LB_SINGLE)
> self.Bind(wx.EVT_LISTBOX, self.EvtListBox, self.lb1)
> self.Bind(wx.EVT_LISTBOX_DCLICK, self.EvtListBoxDClick, self.lb1)
> self.lb1.Bind(wx.EVT_RIGHT_UP, self.EvtRightButton)
> self.lb1.SetSelection(3)
> self.lb1.Append("with data", "This one has data");
> self.lb1.SetClientData(2, "This one has data");
>
>
> wx.StaticText(self, -1, "Select many:", (220, 50))
> self.lb2 = wx.ListBox(self, 70, (320, 50), (90, 120), sampleList,
> wx.LB_EXTENDED)
> self.Bind(wx.EVT_LISTBOX, self.EvtMultiListBox, self.lb2)
> self.lb2.Bind(wx.EVT_RIGHT_UP, self.EvtRightButton)
> self.lb2.SetSelection(0)
>
> sampleList = sampleList + ['test a', 'test aa', 'test aab',
> 'test ab', 'test abc', 'test abcc',
> 'test abcd' ]
> sampleList.sort()
> wx.StaticText(self, -1, "Find Prefix:", (15, 250))
> fp = FindPrefixListBox(self, -1, (100, 250), (90, 120), sampleList,
> wx.LB_SINGLE)
> fp.SetSelection(0)
>
>
> def EvtListBox(self, event):
> self.log.WriteText('EvtListBox: %s, %s, %s, %s\n' %
> (event.GetString(),
> event.IsSelection(),
> event.GetSelection(),
> event.GetClientData()))
>
> lb = event.GetEventObject()
> data = lb.GetClientData(lb.GetSelection())
>
> if data is not None:
> self.log.WriteText('\tdata: %s\n' % data)
>
>
> def EvtListBoxDClick(self, event):
> self.log.WriteText('EvtListBoxDClick: %s\n' % self.lb1.GetSelection())
> self.lb1.Delete(self.lb1.GetSelection())
>
> def EvtMultiListBox(self, event):
> self.log.WriteText('EvtMultiListBox: %s\n' %
> str(self.lb2.GetSelections()))
>
> def EvtRightButton(self, event):
> self.log.WriteText('EvtRightButton: %s\n' % event.GetPosition())
>
> if event.GetEventObject().GetId() == 70:
> selections = list(self.lb2.GetSelections())
> selections.reverse()
>
> for index in selections:
> self.lb2.Delete(index)
>
>
> #---------------------------------------------------------------------------
>
> def runTest(frame, nb, log):
> win = TestListBox(nb, log)
> return win
>
> #---------------------------------------------------------------------------
>
>
>
>
> overview = """<html><body>
> A listbox is used to select one or more of a list of
> strings. The strings are displayed in a scrolling box, with the
> selected string(s) marked in reverse video. A listbox can be single
> selection (if an item is selected, the previous selection is removed)
> or multiple selection (clicking an item toggles the item on or off
> independently of other selections).
> </body></html>
> """
>
>
> if __name__ == '__main__':
> import sys,os
> import run
> run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
>
--
http://mail.python.org/mailman/listinfo/python-list
