我正在尝试实现悬停功能,当我将鼠标悬停在我的项目上的特定区域时,我重新绘制该项目。
class TestItem : public QQuickItem
{
Q_OBJECT
public:
explicit TestItem(QQuickItem *parent = nullptr) : QQuickItem(parent)
{
setAcceptHoverEvents(true);
setAcceptedMouseButtons(Qt::AllButtons);
}
protected:
// QQuickItem interface
void mouseMoveEvent(QMouseEvent *event) Q_DECL_OVERRIDE
{
qDebug() << "mouseMoveEvent()" << event->buttons() << event->x() << event->y();
}
void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE
{
qDebug() << "mousePressEvent()" << event->buttons() << event->x() << event->y();
}
void mouseReleaseEvent(QMouseEvent *event) Q_DECL_OVERRIDE
{
qDebug() << "mouseReleaseEvent()" << event->buttons() << event->x() << event->y();
}
};
然而,当我将光标移动到我的项目上时,使用此类我终端上不会收到任何“mouseMoveEvent()”输出。它仅在按住任何鼠标按钮时有效。
如何在不强迫用户按住任何鼠标按钮的情况下实现此目的?
答案 0 :(得分:2)
可以自己解决,问题是我正在听错事件。正确的事件应该是hoverMoveEvent()
。
使用以下类,我得到了正确的输出:
class TestItem : public QQuickItem
{
Q_OBJECT
public:
explicit TestItem(QQuickItem *parent = nullptr) : QQuickItem(parent)
{
setAcceptHoverEvents(true);
}
protected:
// QQuickItem interface
void hoverEnterEvent(QHoverEvent *event) Q_DECL_OVERRIDE
{
qDebug() << "hoverEnterEvent()" << event->posF();
}
void hoverMoveEvent(QHoverEvent *event) Q_DECL_OVERRIDE
{
qDebug() << "hoverMoveEvent()" << event->posF();
}
void hoverLeaveEvent(QHoverEvent *event) Q_DECL_OVERRIDE
{
qDebug() << "hoverLeaveEvent()" << event->posF();
}
};