QML和QT对象之间的访问

#include "tmp.h" Tmp::Tmp(QGraphicsItem *parent) :QGraphicsProxyWidget(parent) { m_widget = new QWidget; m_button = new QPushButton(m_widget); m_label = new QLabel(m_widget); m_button->setText("PushButton"); m_button->setGeometry(10, 10, 100, 30); m_label->setGeometry(10, 40, 200, 30); QObject::connect(m_button, SIGNAL(clicked()), this, SIGNAL(sendOnButton())); setWidget(m_widget); } Tmp::~Tmp() { delete m_widget; } void Tmp::changeText(const QString &text) { m_label->setText(text); qDebug("call Widget::changeText"); }