On Tuesday, July 20, 2010 15:57:41 Mike Linford wrote: > I'm playing with QtD, and I tried to override a QWidget's sizeHint() > function, which is declared as const QSize sizeHint(). I tried to > override it by declaring my function as override const(QSize) sizeHint > () . I got a compiler error that it was "not covariant" with const QSize, > and when I changed it to that it worked fine. I've skimmed through the > documentation but don't understand what the difference is. Any help?
IIRC, const QSize sizeHint() is synonymous with QSize sizeHint() const which means that the function is const. However, const(QSize) sizeHint() means that the QSize returned is const rather than the function. - Jonathan M Davis
