Tree control with check boxes

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Tree control with check boxes

 
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  #1
Jun 6th, 2008
How to create a tree control with child nodes having check boxes? I want the check boxes to be preferably on the left side of the nodes.
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Re: Tree control with check boxes

 
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  #2
Jun 6th, 2008
Care to elaborate... a lot? I mean it'd help if you mentioned what GUI module you're using, for a start.
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Re: Tree control with check boxes

 
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  #3
Jun 6th, 2008
We are using this code.We are unable to append check box corresponding to each node.
For example, I need check boxes for node named LINUX,FreeBSD etc and hencelikewise.

please see attachment.
******************-************************-*******************************-*
python Syntax (Toggle Plain Text) 
  1. import wx
  2.  
  3. class MyFrame(wx.Frame):
  4.     def __init__(self, parent, id, title):
  5.         wx.Frame.__init__(self, parent, id, title, wx.DefaultPosition, wx.Size(450, 350))
  6.  
  7.         hbox = wx.BoxSizer(wx.HORIZONTAL)
  8.         vbox = wx.BoxSizer(wx.VERTICAL)
  9.         panel1 = wx.Panel(self, -1)
  10.         panel2 = wx.Panel(self, -1)
  11.  
  12.         self.tree = wx.TreeCtrl(panel1, 1, wx.DefaultPosition, (-1,-1), wx.TR_HIDE_ROOT|wx.TR_HAS_BUTTONS)
  13.         root = self.tree.AddRoot('Programmer')
  14.         os = self.tree.AppendItem(root, 'Operating Systems')
  15.         pl = self.tree.AppendItem(root, 'Programming Languages')
  16.         tk = self.tree.AppendItem(root, 'Toolkits')
  17.         self.tree.AppendItem(os, 'Linux')
  18.         self.tree.AppendItem(os, 'FreeBSD')
  19.         self.tree.AppendItem(os, 'OpenBSD')
  20.         self.tree.AppendItem(os, 'NetBSD')
  21.         self.tree.AppendItem(os, 'Solaris')
  22.         cl = self.tree.AppendItem(pl, 'Compiled languages')
  23.         sl = self.tree.AppendItem(pl, 'Scripting languages')
  24.         self.tree.AppendItem(cl, 'Java')
  25.         self.tree.AppendItem(cl, 'C++')
  26.         self.tree.AppendItem(cl, 'C')
  27.         self.tree.AppendItem(cl, 'Pascal')
  28.         self.tree.AppendItem(sl, 'Python')
  29.         self.tree.AppendItem(sl, 'Ruby')
  30.         self.tree.AppendItem(sl, 'Tcl')
  31.         self.tree.AppendItem(sl, 'PHP')
  32.         self.tree.AppendItem(tk, 'Qt')
  33.         self.tree.AppendItem(tk, 'MFC')
  34.         self.tree.AppendItem(tk, 'wxPython')
  35.         self.tree.AppendItem(tk, 'GTK+')
  36.         self.tree.AppendItem(tk, 'Swing')
  37.         self.tree.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, id=1)
  38.         self.display = wx.StaticText(panel2, -1, '',(10,10), style=wx.ALIGN_CENTRE)
  39.         vbox.Add(self.tree, 1, wx.EXPAND)
  40.         hbox.Add(panel1, 1, wx.EXPAND)
  41.         hbox.Add(panel2, 1, wx.EXPAND)
  42.         panel1.SetSizer(vbox)
  43.         self.SetSizer(hbox)
  44.         self.Centre()
  45.  
  46.     def OnSelChanged(self, event):
  47.         item =  event.GetItem()
  48.         self.display.SetLabel(self.tree.GetItemText(item))
  49.  
  50. class MyApp(wx.App):
  51.     def OnInit(self):
  52.         frame = MyFrame(None, -1, 'treectrl.py')
  53.         frame.Show(True)
  54.         self.SetTopWindow(frame)
  55.         return True
  56.  
  57. app = MyApp(0)
  58. app.MainLoop()


********************-**************************-*********************
Editors note: Please use the [code=python] and [/code] tag pair to enclose your python code.
Last edited by vegaseat; Jun 6th, 2008 at 1:53 pm. Reason: code tags
Attached Images
File Type: bmp treectrl.bmp (520.1 KB, 3 views)
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Re: Tree control with check boxes

 
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  #4
Jun 7th, 2008
Why not just create checkboxes, hide them, and then on the event of a tree node expansion, show the corresponding checkboxes?
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Because what's not to like about being killed by a toilet seat from Mir's atmospheric re-entry?
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Re: Tree control with check boxes

 
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  #5
Jun 7th, 2008
Although I don't use wxPython, you should be able to use a dictionary to clean up the code. Something like this. Again I don't use this toolkit so it may require tuning.
Python Syntax (Toggle Plain Text) 
  1. import wx
  2.  
  3. class MyFrame(wx.Frame):
  4.     def __init__(self, parent, id, title):
  5.         wx.Frame.__init__(self, parent, id, title, wx.DefaultPosition, wx.Size(450, 350))
  6.  
  7.         hbox = wx.BoxSizer(wx.HORIZONTAL)
  8.         vbox = wx.BoxSizer(wx.VERTICAL)
  9.         panel1 = wx.Panel(self, -1)
  10.         panel2 = wx.Panel(self, -1)
  11.  
  12.         self.tree = wx.TreeCtrl(panel1, 1, wx.DefaultPosition, (-1,-1), 
  13.                                    wx.TR_HIDE_ROOT|wx.TR_HAS_BUTTONS)
  14.         root = self.tree.AddRoot('Programmer')
  15.         os = self.tree.AppendItem(root, 'Operating Systems')
  16.         pl = self.tree.AppendItem(root, 'Programming Languages')
  17.         tk = self.tree.AppendItem(root, 'Toolkits')
  18.  
  19.         root_dict = {}
  20.         root_dict[os] = ('Linux',  'FreeBSD', 'OpenBSD', 'NetBSD', 'Solaris')
  21.         root_dict[tk]  = ('Qt', 'MFC', 'wxPython', 'GTK+', 'Swing')
  22.         for index in root_dict.keys():
  23.            for item in root_dict[index]:
  24.               self.tree.AppendItem(index, item)
  25.  
  26.         cl = self.tree.AppendItem(pl, 'Compiled languages')
  27.         sl = self.tree.AppendItem(pl, 'Scripting languages')
  28.         pl_dict = {}
  29.         pl_dict[cl] = ('Java', 'C++', 'C', 'Pascal')
  30.         pl_dict[sl]  = ('Python', 'Ruby', 'Tcl', 'PHP')
  31.         for index in pl_dict.keys():
  32.            for item in pl_dict[index]:
  33.               self.tree.AppendItem(index, item)
  34.  
  35.         self.tree.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, id=1)
  36.         self.display = wx.StaticText(panel2, -1, '',(10,10), style=wx.ALIGN_CENTRE)
  37.         vbox.Add(self.tree, 1, wx.EXPAND)
  38.         hbox.Add(panel1, 1, wx.EXPAND)
  39.         hbox.Add(panel2, 1, wx.EXPAND)
  40.         panel1.SetSizer(vbox)
  41.         self.SetSizer(hbox)
  42.         self.Centre()
  43.  
  44.     def OnSelChanged(self, event):
  45.         item =  event.GetItem()
  46.         self.display.SetLabel(self.tree.GetItemText(item))
  47.  
  48. class MyApp(wx.App):
  49.     def OnInit(self):
  50.         frame = MyFrame(None, -1, 'treectrl.py')
  51.         frame.Show(True)
  52.         self.SetTopWindow(frame)
  53.         return True
  54.  
  55. app = MyApp(0)
  56. app.MainLoop()
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