what is differant between os4 and 5 for theme deverloper have to concern?

[jackavin]

I need to know i i want to deverlop theme for blackberry for os 4 and 5.

And i want my theme to use with both of version.What i have to concern about building theme.

I have use theme builder 5.0

Or it can use all version already?

[jackavin]

anyone please make me clever pelase

[mrtolles]

OS 5 have some themeing features not found in OS 4 like the ability to theme the Folder icons and call screen, add gradient to cursors, add transitions when switching screens, add a ring tone, theme the search bar and maybe a few others i'm forgetting.

Themes made for OS 4, CAN be used on OS 5.
Themes made for OS 5 can NOT be used on OS 4.

If you make all your themes for OS 5, you can still export it to OS 4 but you will get "warnings" that the features stated above are not supported by OS 4 and there for will not be included in the OS 4 version of the theme, but the rest will.