hi, i can't figure out how to successfully loop through items under
another item in TreeCtrl. For example, i have the following tree:
root
-- item
----1
----2
----3
----4
----5
However, i don't usually know how many item i have under a certain
parent, how do i use GetNextChild() to loop through it? I found
GetCount(self), though that doesn't take in any parameters, so i'm
guessing it only gets how many items under root?
I was thinking of looping like
for itemNum in range(numberOfItem):
child = tree.GetNextChild(item);
#do something with the child
Though i cannot find any method that gets the number of items
I'm sure i'm doing something wrong here, can someone please point out
the errors? thanks alot!
···
--
"It's a wonderful world hobbes ol' buddy, let's go explorin'!" -
Calvin in "Calvin and Hobbes"
If you call GetNextChild() when there is no next child, it's not an
error --- you just get back an invalid TreeItemId.
So you can do something like this, I think:
child, cookie = tree.GetFirstChild(root)
while child.IsOk():
# do something with child
child = tree.GetNextChild(root, cookie)
[where tree is your wx.TreeCtrl and root is the wx.TreeItemId whose
children you want to examine]
Although I haven't tested this 
···
On 10/02/06, Jason Wang <randomtalk@gmail.com> wrote:
However, i don't usually know how many item i have under a certain
parent, how do i use GetNextChild() to loop through it? I found
GetCount(self), though that doesn't take in any parameters, so i'm
guessing it only gets how many items under root?
--
John.
If you call GetNextChild() when there is no next child, it's not an
error --- you just get back an invalid TreeItemId.
So you can do something like this, I think:
child, cookie = tree.GetFirstChild(root)
while child.IsOk():
# do something with child
child = tree.GetNextChild(root, cookie)
[where tree is your wx.TreeCtrl and root is the wx.TreeItemId whose
children you want to examine]
Although I haven't tested this
mmm.. i can't seem to find anything to sub for IsOk(), as there isn't
really any method to check if an item id is valid (at least i haven't
found it), can someone please point me in the right direction? thanks
alot!
···
--
"It's a wonderful world hobbes ol' buddy, let's go explorin'!" -
Calvin in "Calvin and Hobbes"
one small error in the code John posted... it should have been:
(child, cookie) = self.tree.GetFirstChild(root)
while child.IsOk():
(child, cookie) = self.tree.GetNextChild(root, cookie)
he misquoted the Bible (Demo) 
···
On 2/10/06, Jason Wang <randomtalk@gmail.com> wrote:
> If you call GetNextChild() when there is no next child, it's not an
> error --- you just get back an invalid TreeItemId.
>
> So you can do something like this, I think:
>
> child, cookie = tree.GetFirstChild(root)
> while child.IsOk():
> # do something with child
> child = tree.GetNextChild(root, cookie)
>
> [where tree is your wx.TreeCtrl and root is the wx.TreeItemId whose
> children you want to examine]
>
> Although I haven't tested this
>
mmm.. i can't seem to find anything to sub for IsOk(), as there isn't
really any method to check if an item id is valid (at least i haven't
found it), can someone please point me in the right direction? thanks
alot!
--
"It's a wonderful world hobbes ol' buddy, let's go explorin'!" -
Calvin in "Calvin and Hobbes"
---------------------------------------------------------------------
To unsubscribe, e-mail: wxPython-users-unsubscribe@lists.wxwidgets.org
For additional commands, e-mail: wxPython-users-help@lists.wxwidgets.org
well, when i ran the code, it says Tuple object has no attribute
IsOk(), so i assume i suppose to write something instead of IsOk()...
Anyone know what's wrong?
···
On 2/10/06, Peter Damoc <pdamoc@gmail.com> wrote:
one small error in the code John posted... it should have been:
(child, cookie) = self.tree.GetFirstChild(root)
while child.IsOk():
(child, cookie) = self.tree.GetNextChild(root, cookie)
he misquoted the Bible (Demo)
--
"It's a wonderful world hobbes ol' buddy, let's go explorin'!" -
Calvin in "Calvin and Hobbes"
I'm sure you tried the code I posted and due to some voodoo magic the
child turned into a tuple.
Peter
···
On 2/10/06, Jason Wang <randomtalk@gmail.com> wrote:
On 2/10/06, Peter Damoc <pdamoc@gmail.com> wrote:
> one small error in the code John posted... it should have been:
>
> (child, cookie) = self.tree.GetFirstChild(root)
>
> while child.IsOk():
> (child, cookie) = self.tree.GetNextChild(root, cookie)
>
> he misquoted the Bible (Demo)
well, when i ran the code, it says Tuple object has no attribute
IsOk(), so i assume i suppose to write something instead of IsOk()...
Anyone know what's wrong?
--
"It's a wonderful world hobbes ol' buddy, let's go explorin'!" -
Calvin in "Calvin and Hobbes"
---------------------------------------------------------------------
To unsubscribe, e-mail: wxPython-users-unsubscribe@lists.wxwidgets.org
For additional commands, e-mail: wxPython-users-help@lists.wxwidgets.org
well, when i tried it on the TreeCtrl demo, it doesn't seem to be working..
I changed OnItemExpanded to:
def OnItemExpanded(self, event):
item = event.GetItem()
if item:
(child, cookie) = self.tree.GetFirstChild(item)
self.log.WriteText("first child: %s\n" %
self.tree.GetItemText(child))
while child.IsOk():
self.tree.Delete(child)
(child, cookie) = self.tree.GetNextChild(root, cookie)
self.log.WriteText("OnItemExpanded: %s\n" %
self.tree.GetItemText(item))
in the code, the first child printed fine if it's a child without
further child, however, it doesn't seem to work on child with further
divisions..
and it definitely doesn't delete any child..
···
On 2/10/06, Peter Damoc <pdamoc@gmail.com> wrote:
I'm sure you tried the code I posted and due to some voodoo magic the
child turned into a tuple.
Peter
--
"It's a wonderful world hobbes ol' buddy, let's go explorin'!" -
Calvin in "Calvin and Hobbes"