[Qt-interest] Customizing QSpinBox in Qt4

[Andreas Pakulat]

On 30.06.09 07:55:04, Lars Amsel wrote:
> Hi Alex,
> 
> Malyushytsky, Alex wrote:
> >>> This works. What I dislike is, that I have to subclass the spin box to
> >>> change something I consider to be a property.
> > 
> > Why do you dislike an idea of subclassing? The only thing came to my mind
> > it was inconvenience of using QDesigner with subclasses in Qt3 (creating
> > and managing addons added extra complexity) . Qt4 added "Promoting Widgets"
> > feature which fixed that problem.
> 
> As I said in my initial mail, I don't like the idea of subclassing for 
> changing things that I suppose to be a property. To my experience this leads 
> either to a uncontrolled growth of subclasses or one fat subclass containing a 
> lot of incoherent extensions, typically called QExSpinBox or something 
> similar. I don't like both. That's why I asked for a solution that avoids 
> subclassing.

Well, how is that different from a QSpinBox that is huge and fat just to
satisfy every possible usage-scenario?

Andreas

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