m_pSearchLineEdit = new QLineEdit();QPushButton *pSearchButton = new QPushButton(this);pSearchButton->setCursor(Qt::PointingHandCursor);pSearchButton->setFixedSize(22, 22);pSearchButton->setToolTip(QStringLiteral("搜索"));pSearchButton->setStyleSheet("QPushButton{border-image:url(:/images/icon_search_normal); background:transparent;} \                                     QPushButton:hover{border-image:url(:/images/icon_search_hover)}                                      QPushButton:pressed{border-image:url(:/images/icon_search_press)}");//防止文本框输入内容位于按钮之下QMargins margins = m_pSearchLineEdit->textMargins();m_pSearchLineEdit->setTextMargins(margins.left(), margins.top(), pSearchButton->width(), margins.bottom());m_pSearchLineEdit->setPlaceholderText(QStringLiteral("请输入搜索内容"));QHBoxLayout *pSearchLayout = new QHBoxLayout();pSearchLayout->addStretch();pSearchLayout->addWidget(pSearchButton);pSearchLayout->setSpacing(0);pSearchLayout->setContentsMargins(0, 0, 0, 0);m_pSearchLineEdit->setLayout(pSearchLayout);connect(pSearchButton, SIGNAL(clicked(bool)), this, SLOT(search()));