Op 22-5-2013 21:34, Thiago Macieira schreef: > On quarta-feira, 22 de maio de 2013 16.52.29, Jonathan Greig wrote: >> Thank you André. The dynamic_cast worked perfectly. I'm from a C background >> and have been doing C-style casts for years without any major problems. >> Apparently this guy has also:) >> http://stackoverflow.com/questions/28002/regular-cast-vs-static-cast-vs-dyna >> mic-cast > A C cast is equivalent to a chain of reinterpret_cast and const_cast. It does > not do static casting or dynamic casting, which means it will not do pointer > adjustments properly. > > So, as a rule of thumb: do not use C-style casts in C++ code and always use > the least invasive C++ cast operator that you can use. And another rule of > thumb: dynamic_casts are always checked[*], all the other casts are never > checked. You're overlooking our very own qobject_cast. That one works on QObject derived classes without requiring the use of RTTI in the compiler, and work across library boundaries. So, if your class inherits QObject, I'd prefer qobject_cast instead.
André _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
