From: Stefano Crocco <stefano.crocco@...>
Date: 2007-05-17T19:01:55+09:00
Subject: Re: TreeWidgetItem problem

Alle gioved� 17 maggio 2007, Miquel ha scritto:
> Hi there
>
> I'm trying to code a Tree using ruby qt bindings (Qt v4.2.0 using
> aboutQt() info).
>
> This is my code.
>
> 	@tree = Qt::TreeWidget.new(self)
> 	self.setCentralWidget(@tree)
>
> 	@rootItem = Qt::TreeWidgetItem.new(@tree)
> 	@rootItem.setText(0, "Root")
>
> 	0.upto(10) do |index|
> 		item = Qt::TreeWidgetItem.new(@rootItem)
> 		item.setText(0, "Node#{index}")
> 	end
>
> The problem is in 'item = Qt::TreeWidgetItem.new(@rootItem)', system
> tells me:
>
> unresolved constructor call Qt::TreeWidgetItem (ArgumentError)
>
> and reading Qt documentation there are two constructors allowed:
>
> QTreeWidgetItem ( QTreeWidget * parent, int type = Type )
> QTreeWidgetItem ( QTreeWidgetItem * parent, int type = Type )
>
> The first one is used in the @rootNode object creation and the second
> one is the one which produces this message.
>
> Can anybody help me?
>
> Thanks in advance
>
> Best regards
>
>
> 	Miquel

It seems that you need to specify also the optional parameter. If you 
substitute the line
item = Qt::TreeWidgetItem.new(@rootItem)
with
item = Qt::TreeWidgetItem.new(@rootItem, Qt::TreeWidgetItem::Type)
it should work (at least, it does on my system, with qt 4.2.3).

I hope this helps

Stefano