QT事件过滤(QObject::installEventFilter()和QObject::eventFilter(QObject*,QEvent*)函数)
事件过滤程序效果展示程序.h#ifndefEVENTFILTER_H#defineEVENTFILTER_H#include#includeclassEventFilter:publicQDialog{Q_OBJECTpublic:EventFilter(QWidget*parent=0);~EventFilter();publicslots:booleventFilter(QObject*,QE