QSpinbox: change speed of increments when holding button

[jpn]

Unfortunately QSpinBox buttons aren't QAbstractButtons. They are just "primitive elements" drawn by the style.

[RThaden]

Trolltech has answered on my mail:

We have read your email but require more time to deal with it. We have
assigned it the issue number #227937. Please use this number if you email
us about the issue.

I didn't find that issue in the bugtracker yet. Maybe it is not yet published. So, I'll have to wait ...
Thanks for sharing your knowledge, jpn.

Regards,

Rainer