How to add QtDesigner.dll support? (such as QtSlq added to pro file as "QT += sql")

Hi!

I use free version of QtCreator and Qt. I know about free version limit!

And I have converted project (.pro file) from MSVS 2005 (Qt plugin). In this project used
QtDesigner.lib and QtDesignerComponents.lib, then I build project in QtCreator, its not founded, because it is not added to .pro file!!!

I know how to add std libs QtSql QtXml and etc. Can you say me how to add this LIB to .pro file?

QT += sql xml /*QtDesigner, DesignerComponents how to add it here?*/
Thanks, very much!

ok, I deside this quest. by adding some lines to pro file^

LIBS += -L"./../debug" \
-lQtDesignerComponentsd4 \
-lQtDesignerd4
:)