[wxPython-users] about customtreectrl.GenericTreeItem

[Andrea Gavana]

Hi Lee,

On 7/22/07, Lee DYER wrote:
> I used a=tree.GetFirstChild(item) to get the firstitem of the item
> object,the return value is an instance of customtreectrl.GenericTreeItem,is
> it right?
>
> but why I can't use the the return value to get the parent  like this
> :a.GetParent()
>
> the Trace says a tuple don't have the GetParent method
>
> so the retuan value is a tuple?I modify the code like a[0].GetParent() ,it
> works
>
> who can explain why ?

GetFirstChild (and GetNextChild) returns a tuple: the first element of
the tuple is the GenericTreeItem, the second one is a so called
"cookie", which can be used to recurse over all children of a
particular item:

child, cookie = self.GetFirstChild(item)
while child:
    # do something with child
    child, cookie = self.GetNextChild(item, cookie)

HTH.

Andrea.

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