Qt框架中QPushButton 和 QToolButton的使用小结

#include <QPushButton>
#include <QVBoxLayout>
#include <QWidget>

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    QWidget window;
    QVBoxLayout *layout = new QVBoxLayout(&window);

    // 创建一个标准按钮
    QPushButton *button = new QPushButton("点击我", &window);
    button->setStyleSheet("QPushButton { background-color: #4CAF50; color: white; padding: 10px; }");
    button->setIcon(QIcon(":/images/icon.png"));

    // 连接信号与槽
    QObject::connect(button, &QPushButton::clicked, []() {
        qDebug() << "按钮被点击了！";
    });

    layout->addWidget(button);
    window.show();
    return app.exec();
}

#include <QToolButton>
#include <QMenu>
#include <QVBoxLayout>
#include <QWidget>

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    QWidget window;
    QVBoxLayout *layout = new QVBoxLayout(&window);

    // 创建一个工具按钮
    QToolButton *toolButton = new QToolButton(&window);
    toolButton->setText("更多操作");
    toolButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    toolButton->setIcon(QIcon(":/images/menu.png"));

    // 创建一个弹出菜单
    QMenu *menu = new QMenu(toolButton);
    menu->addAction("操作1");
    menu->addAction("操作2");
    menu->addAction("操作3");

    // 设置菜单
    toolButton->setMenu(menu);
    toolButton->setPopupMode(QToolButton::MenuButtonPopup);

    // 连接信号与槽
    QObject::connect(toolButton, &QToolButton::clicked, []() {
        qDebug() << "工具按钮被点击了！";
    });

    layout->addWidget(toolButton);
    window.show();
    return app.exec();
}

// 自定义 QPushButton 的样式
QPushButton *customButton = new QPushButton("自定义按钮");
customButton->setStyleSheet(
    "QPushButton {"
    "    background-color: #FF6B6B;"
    "    border-radius: 5px;"
    "    padding: 10px;"
    "}"
    "QPushButton:hover {"
    "    background-color: #FF8E8E;"
    "}"
    "QPushButton:pressed {"
    "    background-color: #FFA0A0;"
    "}"
);

#include <QPushButton>
#include <QPainter>

class CustomPushButton : public QPushButton {
public:
    CustomPushButton(QWidget *parent = nullptr) : QPushButton(parent) {}

protected:
    void paintEvent(QPaintEvent *event) override {
        QPainter painter(this);
        painter.setRenderHint(QPainter::Antialiasing);

        // 绘制背景
        painter.setBrush(QColor(0x4CAF50));
        painter.setPen(Qt::NoPen);
        painter.drawRoundedRect(rect(), 8, 8);

        // 绘制文本
        painter.setPen(Qt::white);
        QFont font = this->font();
        font.setPointSize(12);
        painter.setFont(font);
        painter.drawText(rect(), Qt::AlignCenter, text());
    }
};