Re: [Pythoncard-users] wx attributes for Tree control

[hwg <hw...@ya...>]

Thanks for the help.  This worked for the TR_MULTIPLE attribute.  Curiously, when I tried to set TR_HIDE_ROOT, Python crashed!

hg

Jussi Salmela <jus...@pp...> wrote: hwg kirjoitti:
> I have a treeCtrl and I would like to have the ability to select 
> multiple items in the tree.
>
> I know the underlying wxTreeCtrl has some flags:
>
> e.g. style = wx.TR_MULTIPLE | wx.TR_HIDE_ROOT
>
> But I don't know how (or if) I can access these attributes from my 
> pythoncard code.
>
> Any help would be appreciated.
>
> hg
>
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Here's a part of the PythonCard minimalTree.py file that I have been 
using to get acquainted with the tree control. I've not really used the 
tree control for anything but played a little with it last september 
when someone asked something about this control. So the code may differ 
from the minimalTree example in othe places also, but the modifications 
I made to solve your problem are shown with comments:


import wx # <== added by JS
from PythonCard import model

# events
# itemActivated, itemExpanding, itemExpanded,
# selectionChanging, selectionChanged

class Minimal(model.Background):

    def on_initialize(self, event):
        tree = self.components.tree
        self.root = tree.addRoot("1")
        #print tree.getItemText(self.root)
        tree.setItemHasChildren(self.root, 1)
        tree.selectItem(self.root)
        print dir(tree) # <== added by JS
        tree.SetWindowStyleFlag(wx.TR_MULTIPLE) # <== added by JS
 
Here's an explanation of what I did (in this order):

1. Added the print and copied its output to an editor
2. Searched among the bunch of interesting sounding methods for names 
containing 'style' in them
3. Read a litlle bit of the wxTreeCtrl documentation in the wxWidgets 
docs finding the term 'Window styles' there.
4. Decided that the appropriate method to use must be SetWindowStyleFlag
5. Browsed through the source of tree.py in
        C:\Python24\Lib\site-packages\PythonCard\components
to find any additional info. While doing this found the way to refer to 
the  TR_MULTIPLE constant
6. Made the changes and tested. Seems to work.

HTH,
Jussi

-- 
Jussi Salmela
http://personal.inet.fi/cool/operator/



 
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