if(m_listwidget!=NULL)
delete m_listwidget;
m_listwidget=new ContentListWidget(m_devicelist,count);
m_listwidget->move(10,10);
m_listwidget->show();
父窗口..............
子窗口
for(int i=0;i<m_devicelist.length();i++)
{
DeviceWidget* widget=new DeviceWidget(m_devicelist.at(i)->devicename.GetChars(),"uri",
m_devicelist.at(i)->URN.GetChars(),this);
widget->move(10,80*i);
}