Re: [IronPython] DataGridView

[J. de Hooge]

Jeff,   I would not know any examples of using the DataGridView in Python. But I did use many other view classes in  IronPython, since I’ve been working on a GUI framework in IP. What I used as doc was: .NET SDK 2.0 documentation and Python 2.4 Manuals.   For me that worked fine. There’s remarkably little difference between using them from C# and from IP, even at dealing with event handlers, properties and .NET datastructures.   Since there probably aren’t too many examples around yet, here’s a fragment of code to illustrate this:   -          Instantiate a TreeView -          Add an event handler to its MouseUp event to show a ContextMenuStrip that was built up by a widget creation function defined elsewhere   from sys import * LoadAssemblyByName("System.Windows.Forms") from System.Windows import Forms … class …:                                 def createWidget (self):               … self.widget = Forms.TreeView ()   # Instantiate .NET class self.widget.Dock = Forms.DockStyle.Fill  # Set properties, just like you would in C# self.widget.HideSelection = False # Same self.widget.AllowDrop = True      # Same … if self.contextMenuView: self.widget.ContextMenuStrip = self.contextMenuView.createWidget ()  # Get populated context menu strip               self.widget.MouseUp += lambda sender, event: event.Button != Forms.MouseButtons.Right or sender.ContextMenuStrip.Show (sender, event.Location)      # Add event handler to show context menu at mouse up   .NET datastructures can usually be betraversed with Python iterators without any special tricks:          def bareWrite (self):               expansionDictionary = {}               self.fillExpansionDictionary (self.widget.Nodes, (), expansionDictionary)  # Will traverse Nodes, see function def below               self.widget.Nodes.Clear () # Call member, just like you would in C#               self.writeTree (self.treeNode.new, self.widget.Nodes, (), expansionDictionary) # Pass Forms.TreeView.Nodes property as param, just like in C#          def fillExpansionDictionary (self, treeViewNodes, hashPath, expansionDictionary):                  for treeViewNode in treeViewNodes: # Treat treeViewNodes as an ordinary Python iterable datastructure, even though it is a reference to Forms.TreeView.Nodes, an instance of public class TreeNodeCollection: IList, ICollection, IEnumerable                        if self.transformer:                            newHashPath = hashPath + (treeViewNode.Tag, )   # Use .NET properties just as you would in C#                      else:                            newHashPath = hashPath + (treeViewNode.Text,                                              expansionDictionary [newHashPath] = treeViewNode.IsExpanded   # Yet another property                      self.fillExpansionDictionary (treeViewNode.Nodes, newHashPath, expansionDictionary)   Probably you just should start experimenting. What helped me tremendously  is the fact that IP is interpreted, rather than compiled. I can experiment in seconds, even from the command line, although I prefer assembling small code fragments in an editor to try out stuff.   Currently I am using IP 0.9.5 as interpreter, running IP 0.9.6 beforehand as a syntax checker, since that version has improved error reporting but some run time issues. (for wich a fix is already on this mailing list (thanks Dino) but I haven’t yet found the time to try this out)   Hope this helps Jacques de Hooge [EMAIL PROTECTED]                 -----Oorspronkelijk bericht----- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens jeff sacksteder Verzonden: Thursday, December 22, 2005 4:14 PM Aan: [EMAIL PROTECTED]; Discussion of IronPython Onderwerp: Re: [IronPython] DataGridView   I'm sorry, I meant in Python.

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