Qt-interest Archive, February 2007
[Q] Why is QStackedWidget so slow
Message 1 in thread
All,
I am using a QStackedWidget to display information on various pages. I
have about 26 stack pages. At about 15 or so I notice that in designer
and in my application, it begin to slow down. Why?? The various page a
loaded with other widget to display information.
Thanks
Robert
Message 2 in thread
Oaks, Robert wrote:
>
> I am using a QStackedWidget to display information on various pages. I
> have about 26 stack pages. At about 15 or so I notice that in designer
> and in my application, it begin to slow down. Why?? The various page a
> loaded with other widget to display information.
>
I've noticed this too. It doesn't seem to be dependent on the number of
pages, but rather the number of widgets on each page. In Qt3 it was
lightning fast, but in Qt4, it got much slower, so much so in fact that
even my 3.4GHz high-end machine can't cope.
--Dave
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Message 3 in thread
On 16.02.07 13:49:32, Oaks, Robert wrote:
> I am using a QStackedWidget to display information on various pages. I
> have about 26 stack pages. At about 15 or so I notice that in designer
> and in my application, it begin to slow down. Why?? The various page a
> loaded with other widget to display information.
It would help if you can create a small compilable example.
Is the switch from one widget to another slow, do you have painting
errors, does the app hang?
Andreas
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