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我有一个非常简单的应用程序WebEngineView，我只想将显示的小部件调整为 html 文件的内容。我希望它是 30 像素宽。相反，我的程序会打印QSize(0,0)，更糟糕的是，小部件根本没有显示。

我在这里做错了什么？

#include <QWebEngineView>
#include <QApplication>
#include <QDebug>
#include <QWebEnginePage>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    auto view = new QWebEngineView;
    QString html = "<html><body><div width=30px>Text</div></body></html>";
    view->setHtml(html);
    auto contentsSize=view->page()->contentsSize().toSize();
    qDebug() << contentsSize;
    view->setFixedSize(contentsSize);
    view->show();
    return app.exec();
}

将我的 QWebEngineView 放入对话框仍然不起作用：

#include <QWebEngineView>
#include <QApplication>
#include <QDebug>
#include <QDialog>
#include <QHBoxLayout>
#include <QWebEnginePage>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    auto dialog = new QDialog;
    dialog->setLayout(new QHBoxLayout);
    auto view = new QWebEngineView;
    dialog->layout()->addWidget(view);
    QString html = "<html><body><div width=30px>Text</div></body></html>";
    view->setHtml(html);
    auto contentsSize=view->page()->contentsSize().toSize();
    qDebug() << contentsSize;
    view->setFixedSize(contentsSize);
    dialog->show();
    return app.exec();
}

我也试过连接信号loadFinished，但是没有效果。

#include <QWebEngineView>
#include <QApplication>
#include <QDebug>
#include <QDialog>
#include <QHBoxLayout>
#include <QWebEnginePage>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    auto dialog = new QDialog;
    dialog->setLayout(new QHBoxLayout);
    auto view = new QWebEngineView;
    dialog->layout()->addWidget(view);
    QString html = "<html><body><div width=30px>Text</div></body></html>";
    view->setHtml(html);
    QObject::connect(view->page(), &QWebEnginePage::loadFinished, [&view](bool b) {
        qDebug() << b;
        auto contentsSize = view->page()->contentsSize().toSize();
        qDebug() << contentsSize;
        view->setFixedSize(contentsSize);
    });
    dialog->show();
    return app.exec();

}

4

0 回答 0