Item in a DLL not getting events

[luf]

Sorry... my bad!
should be like this:

mylibrary.h

#ifdef COMPILING_LIBRARY 
	#define MYLIBRARYEXPORT Q_DECL_EXPORT
#else
	#define MYLIBRARYEXPORT  Q_DECL_IMPORT
#endif
 
class MYLIBRARYEXPORT  MyLibraryInDLL: public QWidget
{
    Q_OBJECT
 
public:
	MyLibraryInDLL(QWidget *parent);
}

#ifdef COMPILING_LIBRARY 
	#define MYLIBRARYEXPORT Q_DECL_EXPORT
#else
	#define MYLIBRARYEXPORT  Q_DECL_IMPORT
#endif

class MYLIBRARYEXPORT  MyLibraryInDLL: public QWidget
{
    Q_OBJECT

public:
	MyLibraryInDLL(QWidget *parent);
}

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The only reason to load it is if you want to make sure it's loaded before calling a function. As that makes you able to handle a loading-library-error... If not, your app will just crash if there is a problem loading the library. (e.g. the user moved it).

As you say, you don't have to move the files. It was just a suggestion to keep projects like:
Application
--- library1
--- library2
--- library3
--- library3a
--- library3b

Just to make it easier for your self if the projects grows and gets big...

As for the LIBS += mylibrary.lib in the pro file, it's to make the linker find any links to the library. Nothing else...

cheers,
Leif