Fruit basket program in IronPython using Layout by Code
- From: Jamal Mazrui <empower@xxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Mon, 10 May 2010 10:19:51 -0400
From the archive at
http://EmpowermentZone.com/ip_fruit.zip
This archive has been updated. The original version of this fruit
basket program used the .NET Windows Forms classes to create a GUI. The
archive has been updated to include another version, lbc_fruit.py and
lbc_fruit.exe, using the Layout by Code support of Homer.NET.
In a recent message to this list, I posted code for a fruit basket
program written with standard Windows Python 2.5, using the Python.NET
package to connect to .NET classes, including the Layout by Code support
of the Homer.NET library -- distributed as part of the Homer application
framework, HomerApp, at
http://EmpowermentZone.com/appsetup.exe
or .zip for a manual install.
This IronPython version works with the same source code. IronPython
(supporting the Python 2.6 language) is available at
http://IronPython.net
Thus, both a standard Python-based executable and an IronPython-based
executable can produce an application with the same behavior using
common syntax in Python. The standard Python version has an advantage
of full access to native, third-party Python packages. The .NET version
has an advantage of broader interoperability with the .NET Framework.
The source code of lbc_fruit.py is pasted below.
Jamal
[Begin lbc_fruit.py]
"""
Fruit Basket program in IronPython
Public domain by Jamal Mazrui
May 10, 2010
"""
# Import namespaces
import clr
clr.AddReference('HomerLbc')
from Homer import *
def OnEvent(oSender, oArgs):
if oSender == dlg: sEvent = 'Closing'
else: sEvent = 'Click'
if sEvent == 'Closing':
if Lbc.DialogConfirm('Confirm', 'Exit program?', 'Y') != 'Y':
oArgs.Cancel = True
elif sEvent == 'Click':
if oSender.Name == 'Button_Add':
sFruit = txtFruit.Text
if not sFruit: return Lbc.DialogShow('Alert', 'No fruit
to add!')
lstBasket.Items.Add(sFruit)
iIndex = lstBasket.Items.Count - 1
lstBasket.SelectedIndex = iIndex
txtFruit.Clear()
elif oSender.Name == 'Button_Delete':
iIndex = lstBasket.SelectedIndex
if iIndex == -1: return Lbc.DialogShow('Alert', 'No
fruit to delete!')
lstBasket.Items.RemoveAt(iIndex)
iCount = lstBasket.Items.Count
if not iCount: return
if iIndex == iCount: iIndex -= 1
lstBasket.SelectedIndex = iIndex
# OnEvent function
dlg = LbcForm('Fruit Basket')
txtFruit = dlg.AddInputBox('Fruit')
btnAdd = dlg.AddButton('Add')
btnAdd.Click += OnEvent
dlg.AcceptButton = btnAdd
dlg.AddBand()
lstBasket = dlg.AddPickBox('Basket')
btnDelete = dlg.AddButton('Delete')
btnDelete.Click += OnEvent
dlg.Closing += OnEvent
dlg.CompleteDialog()
[End of lbc_fruit.py]
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