Wx Python from scratch

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The Date Picker control and the ObjectListView

In the last lesson I described the use of two of the wxPython dialogs. In this lesson will deal with two important controls: the Date Picker control, used for selecting a date, and the ObjectListView used for displaying data in a list format.

The Date Picker control

The wx.adv module has a DatePicker class.

Fig 1. A datepicker

The code to generate this is straightforward:

import wx
import wx.adv
from datetime import datetime
import locale

locale.setlocale(locale.LC_ALL,'en_GB.UTF-8')

class MainPanel(wx.Panel):
def __init__(self, parent, *args, **kwargs):
        super(MainPanel, self).__init__(parent, *args, **kwargs)

        now = datetime.today()
        day_one = wx.DateTime(year=now.year, month=0, day=1)
        dte_required = wx.adv.DatePickerCtrl(parent=self, dt=day_one)
        self.dte_required.Bind(wx.adv.EVT_DATE_CHANGED, self.on_dte_required_change)

        sizer = wx.BoxSizer(orient=wx.VERTICAL)
        sizer.Add(dte_required, flag=wx.ALL, border=10)
        self.SetSizer(sizer)

def on_dte_required_change(self, event):
    date = self.dte_required.GetValue()
    pydate = self.wxdate2pydate(date)
    print(pydate.strftime("%d %b %Y"))

@staticmethod
def wxdate2pydate(date):
    assert isinstance(date, wx.DateTime)
    if date.IsValid():
        ymd = list(map(int, date.FormatISODate().split('-')))
        year = int(ymd[0])
        month = int(ymd[1])
        day = int(ymd[2])
        return datetime(year, month, day)
    else:
        return None

The points to note are:

1. The datepicker requires its own wx.DateTime object (line 13) to set the date;
2. the wx.DateTime month starts at zero for January;
3. I have used code from here to help with the date conversion in the wxdate2pydate function.

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