En/na Stefano Crocco ha escrit:
> Alle gioved17 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
>
>
>   
Hey, it is :-D !!!!!! but...Why isn't it necessary in the root node 
creation (the constructor have the same optional parameter)?

Thanks


    Miquel