QT 性能提升的技巧

When writing Qt applications there are a few pointers that you can keep in mind to avoid addingunneeded overhead to your code.-----Evaluate if you really need to inherit QObject. Sometimes you do it just out of habit.-----Avoid the Q_OBJECT macro if you can. You need the macro if you add new signals, slots or properties, or if you use the qobject_cast function with your class.-----If performance counts, use custom events to pass information between threads instead ofsignals and slots.-----Try to avoid copying data by adding implicit sharing to your complex data carrying classes.See more at http://doc.trolltech.com/4.5/shared.html .从Ensuring Maximum Performance with Qt上看到的。与一般的说法还真有点不一样的哦。