[Interest] Link Errors when Creating a Windows DLL containing Qt Widgets
Thiago Macieira
thiago.macieira at intel.com
Mon May 14 18:34:12 CEST 2012
On segunda-feira, 14 de maio de 2012 17.49.03, Till Oliver Knoll wrote:
> I prefer:
>
> class Foo : public QObject {
> Q_OBJECT
> public:
> FOO_API Foo(); // c'tor
> FOO_API virtual ~Foo();
That's a bad idea. That causes those problems of missing virtual table and
meta object because the FOO_API was not applied to the Q_OBJECT internals nor
the class.
If you try to derive from this class or use qobject_cast, you'll get linker
errors.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
Intel Sweden AB - Registration Number: 556189-6027
Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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