Custom Style

[Dusdan]

Hello everybody,

I wrote a custom style for my application, wrapped it within a plugin and put it in $QTDIR/plugins/styles.
My applications are able to use, but designer is not, and I'm not able to preview forms with my style. Even qtconfig doesn't see it.

What should I do to make designer aware of my style?

[jacek]

Is QStyleFactory aware of your style?

[Dusdan]

Is QStyleFactory aware of your style?

I don´t think so, I thought it automatically parsed the folder like other apps. how can I make it aware?

[jacek]

how can I make it aware?

It should should find that plugin all by itself, but if QStyleFactory doesn't know it, then Qt Designer won't know it either. Write a short program that creates QApplication instance and checks QStyleFactory::keys().

What did you pass as the first parameter of the Q_EXPORT_PLUGIN2() macro? Did you compile your plugin in release mode? What is the name of the file with that plugin?

[Dusdan]

It should should find that plugin all by itself, but if QStyleFactory doesn't know it, then Qt Designer won't know it either. Write a short program that creates QApplication instance and checks QStyleFactory::keys().

What did you pass as the first parameter of the Q_EXPORT_PLUGIN2() macro? Did you compile your plugin in release mode? What is the name of the file with that plugin?

it was compiled in debug mode, now it works, thank you.

I have another problem: when I use preview from the designer it doesn´t call the polish functions. since I implemented only those functions (just wanted to change colors and fonts) nothing changes in the previewed window.

[jacek]

when I use preview from the designer it doesn´t call the polish functions.

How did you declare those methods? Maybe you have just implemented different methods (from compiler's point of view)? Make sure that they aren't marked as const.

[Dusdan]

How did you declare those methods? Maybe you have just implemented different methods (from compiler's point of view)? Make sure that they aren't marked as const.

no, they aren´t const. but now it comes to my mind that it can call polish(QApplication*) because there isn any application in the preview: is it right? so there´s no way to make the windows behave exactly as they will in a stand-alone application.

[jacek]

is it right? so there´s no way to make the windows behave exactly as they will in a stand-alone application.

I'm not sure, I haven't played with QStyle yet, but Qt Designer sets the new style only for the form and its children, not the QApplication instance.

[Brandybuck]

I know I'm stepping in late with this question, but I ran across the same thing recently. Make sure your plugin doesn't have any external dependencies other (than Qt). If the style plugin links to a custom widget, then Designer can't use it. Your application can, because it has already loaded the object/library with that widget, but designer doesn't know anything about it.