On Tue, 18 Aug 2009 08:37:55 -0700 (PDT), blue_riviera
<[email protected]> wrote:
> Hi,
>
> I'm new to both Python and PyQt and still learning the ropes (familiar
with
> C++, though). What I'm trying to do is to create a QTreeWidget where some
> items are widgets (say buttons for this example's sake).
>
> When I try this code (snippet):
>
> cw = QTreeWidget()
> cw.setColumnCount(3)
>
> for n in range(3):
>
> i = QTreeWidgetItem(cw) # new row
> i.setText(0, "first "+str(n)) # text in first
> column
> i.setText(1, "second") # text in second column
>
> b = QPushButton("push me "+str(n)) # button...
> cw.setItemWidget(i, 2, b) # ...goes to the
> third column
>
>
> ...the result is that I'll have 3 rows in my tree widget, but only in the
> third row will have a button (all three will have the texts).
>
> However when I append the following code to the above snippet:
>
> b1 = QPushButton("push me 0")
> cw.setItemWidget(cw.topLevelItem(0), 2, b1) # add
> button to row 0,
> column
> 2
>
> b2 = QPushButton("push me 1")
> cw.setItemWidget(cw.topLevelItem(1), 2, b2) # add
> button to row 1,
> column
> 2
>
> ...which is basically a loop unrolled (but the created buttons are
referred
> to by two separate variables), all two buttons will appear.
>
> So my suspicion is that it is not a Qt issue, rather a widget ownership
one
> (I suppose when a new button is assigned to the 'b' variable in the loop,
> the previous button loses 'b' as owner and it gets destroyed).
>
> I suppose I should somehow transfer the button's ownership to (let's say)
> the tree widget once it is created but I don't know how to do that.
Anyone
> can help me out?
It's a bug - it should just work.
As a workaround give the QTreeWidget as the QPushButton parent when you
create the latter...
b = QPushButton("push me " + str(n), cw)
Phil
_______________________________________________
PyQt mailing list [email protected]
http://www.riverbankcomputing.com/mailman/listinfo/pyqt
