小编use*_*592的帖子

我正在使用Qt创建一个GUI应用程序; 我尝试hello world使用Qt并且它工作得很好,但是当我创建自定义列表小部件undefined reference to vtable时,我在编译时遇到错误:

我正在使用eclipse和c ++

#ifndef QMENUFILTER_H_
#define QMENUFILTER_H_
#include <qmenu.h>
class CustomMenuFilter : QMenu
{
    Q_OBJECT
public:
    CustomMenuFilter () ;
    ~CustomMenuFilter() ;
private:
    QMenu FilterMenu;
    QAction *AddFilterAct ;
    QAction *DeleteFilterAct ;

     Q_SLOT
      void contextMenuEvent(QContextMenuEvent *event);
};
#endif /* QMENUFILTER_H_ */


#include "QMenuFilter.h"
CustomMenuFilter::CustomMenuFilter():QMenu()
{
    DeleteFilterAct = new QAction("DeleteFilter" , this);
    AddFilterAct = new QAction("AddFilter" , this);
    AddFilterAct->setText("AddFilter");
    DeleteFilterAct->setText("DeleteFilter");
}

日志文件:http://pastebin.com/raw.php？ i = qZes6bkm