Why can not find QMaemo5*?

[HeartJ]

I saw some QMaemo5* classes(just like QMaemo5TimePickSelector) were used in some apps for n900.

But I can't find anything about that in Qt assist(I used QtSdk).

Please tell me how to use the QMaemo5 class?

[gri]

Only the Nokia Qt SDK contains the Maemo5 extensions. If you use the normal one, you won't see them in your documentation.

You can read it online here: http://doc.trolltech.com/qt-maemo-4.6/qtmaemo5.html

[HeartJ]

yes, I installed the new QtSdk(named Nokia Qt Sdk beta release) included symbian and maemo.

[Diph]

You have to select Maemo target by selecting (on the left of the Qt Creator Projects -> Press + -> Add Maemo target.
It seems that Qt Assistant doesn't have Maemo 5 classes but you can read it online like gri said.

[HeartJ]

thx gri and Diph, I will try.