[Qt-interest] QVBoxLayout with 100s of items is hanging

[Andre Somers]

Qt Quest wrote:
> Hi André,
> Please dont apologize, you meant only good, and I appreciate it!
> Do you know how can I test for visibility on the viewport of an item 
> in the list? That way I can cache the visible items (30-40 items) and 
> use only them.
> Thanks for the effort!
I think QWidget::map should help here.

André