一、自定义需要弹出的窗口（弹出按钮放在该窗口，且外发按钮信号），注：需要设置背景色，不然弹出是透明的（不知道原因）

二、主窗口初始化

     int m_popBtnWidth = 0;int m_beginPosX = 0;int m_beginPosY = 0;QPropertyAnimation *m_propertyAnimation;  //采用属性动画void RegisterMainWnd::initPopWidget()
{m_popBtnWidth = 40;m_beginPosX = this->width() ;m_beginPosY = 0;m_detailWnd = new RegisterDetailWnd(this); //需要弹出的窗口m_detailWnd->setFixedHeight(this->height());m_detailWnd->setMinimumWidth(this->width() / 2);m_detailWnd->move(m_beginPosX - m_popBtnWidth,m_beginPosY);// 初始化将其放到主界面最右侧停靠m_curPopStatus = false;connect(m_detailWnd, &RegisterDetailWnd::popStatusChanged, this, &RegisterMainWnd::onPopStatusChanged); //连接信号m_propertyAnimation = new QPropertyAnimation(m_detailWnd,"geometry"); //初始化动画m_propertyAnimation->setEasingCurve(QEasingCurve::InOutSine);m_propertyAnimation->setDuration(800);
}

三、按钮信号处理

void RegisterMainWnd::onPopStatusChanged(bool pop)
{if(pop) //从最右边弹出，{m_propertyAnimation->setStartValue(QRect(m_beginPosX - m_popBtnWidth,m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));m_propertyAnimation->setEndValue(QRect(m_beginPosX-m_detailWnd->width(),m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));m_propertyAnimation->start();}else //回到最右边{m_propertyAnimation->setStartValue(QRect(m_beginPosX-m_detailWnd->width(),m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));m_propertyAnimation->setEndValue(QRect(m_beginPosX - m_popBtnWidth,m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));m_propertyAnimation->start();}}

三、重置弹出窗口与主界面宽度一致

void RegisterMainWnd::resizeEvent(QResizeEvent *e)//重写主界面的事件
{m_beginPosX = this->width() ;m_beginPosY = 0;m_detailWnd->setFixedHeight(this->height());m_detailWnd->setMinimumWidth(this->width() / 2);m_detailWnd->move(m_beginPosX - m_popBtnWidth,m_beginPosY);// 右侧停靠QWidget::resizeEvent(e);
}