关于搜索框,你们都常常接触。例如:浏览器搜索、Windows资源管理器搜索等。浏览器
固然,这些对于Qt实现来讲毫无压力,只要思路清晰,分分钟搞定。markdown
实现细节须要以下步骤:函数
为了更人性、易用,这里有一些细节须要注意:ui
这些都想清楚了,咱们就能快速实现一个搜索框了。this
搜索框实现url
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()));
槽函数实现spa
void Widget::search()
{
QString strText = m_pSearchLineEdit->text();
if (!strText.isEmpty())
{
QMessageBox::information(this, QStringLiteral("搜索"), QStringLiteral("搜索内容为%1").arg(strText));
}
}
原文做者:一去丶二三里
做者博客:去做者博客空间