qt设置过滤器

Nicolayy

已于 2025-01-13 17:52:58 修改

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分类专栏： QT 文章标签：数据库

于 2024-07-23 18:51:02 首次发布

本文链接：https://blog.youkuaiyun.com/weixin_46430763/article/details/140642507

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1.创建事件过滤器类，在主窗口中安装事件过滤器

class PasteFilter : public QObject {
    Q_OBJECT

public:
    PasteFilter(QObject *parent = nullptr) : QObject(parent) {}

protected:
    bool eventFilter(QObject *obj, QEvent *event) override {
        if (event->type() == QEvent::KeyPress) {
            QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
            if (keyEvent->modifiers() == Qt::ControlModifier && keyEvent->key() == Qt::Key_V) {
                QTextEdit *textEdit = qobject_cast<QTextEdit *>(obj);
                if (textEdit) {
                    QClipboard *clipboard = QApplication::clipboard();
                    QString clipboardText = clipboard->text();
                    QString quotedText = "\"" + clipboardText + "\"";
                    QTextCursor cursor = textEdit->textCursor();
                    cursor.insertText(quotedText);