如何在我的代码中使用 createWindow [Qt5.8]

Posted 2023-02-22

【中文标题】如何在我的代码中使用 createWindow [Qt5.8]

【英文标题】：How to use createWindow in my code [Qt5.8]

【发布时间】：2017-04-02 18:43:33

【问题描述】：

在以下代码中，当站点请求新选项卡或窗口时，它不会打印任何内容。如何使我的代码正常工作？请帮助，我太困惑了。谢谢！

class WebView:public QWebEngineView
protected:
    QWebEngineView* createWindow(QWebEnginePage::WebWindowType type)
        switch(type)
        case QWebEnginePage::WebBrowserTab: 
                std::cout<<"Tab Requested"<<std::endl;
                return new QWebEngineView();
            
            case QWebEnginePage::WebBrowserBackgroundTab: 
                std::cout<<"Background Tab Requested"<<std::endl;
                return new QWebEngineView();
            
            case QWebEnginePage::WebBrowserWindow: 
                std::cout<<"window Requested"<<std::endl;
                return new QWebEngineView();
            
            case QWebEnginePage::WebDialog: 
                std::cout<<"popup Requested"<<std::endl;
                return new QWebEngineView();
            
            
            return nullptr;
        
public:
    QString home_page;
    QWebEngineView* view=new QWebEngineView();
    WebView(QString page=QString("https://google.com"))
        this->home_page=page;
        this->view->settings()->setAttribute(QWebEngineSettings::javascriptCanOpenWindows,true);
        createWebView();
    
    void createWebView()
        this->view->load(QUrl(this->home_page));
    

【参考方案1】：

createWindow 函数是为WebView 类的成员实现的，而不是为view 成员实现的。

#include <QApplication>

#include <QWebEngineView>
#include <QWebEngineSettings>
#include <iostream>

class WebView : public QWebEngineView

public:
    WebView(QString page=QString("https://google.com"), QWidget *parent = Q_NULLPTR):QWebEngineView(parent)
    
        home_page = page;
        settings()->setAttribute(QWebEngineSettings::JavascriptCanOpenWindows, true);
    

    void createWebView()
        load(QUrl(home_page));
    

protected:
    QWebEngineView* createWindow(QWebEnginePage::WebWindowType type)
        switch(type)
        case QWebEnginePage::WebBrowserTab: 
            std::cout<<"Tab Requested"<<std::endl;
            return new QWebEngineView();
        
        case QWebEnginePage::WebBrowserBackgroundTab: 
            std::cout<<"Background Tab Requested"<<std::endl;
            return new QWebEngineView();
        
        case QWebEnginePage::WebBrowserWindow: 
            std::cout<<"window Requested"<<std::endl;
            return new QWebEngineView();
        
        case QWebEnginePage::WebDialog: 
            std::cout<<"popup Requested"<<std::endl;
            return new QWebEngineView();
        
        
        return nullptr;
    

private:
    QString home_page;
;


int main(int argc, char *argv[])

    QApplication a(argc, argv);
    WebView web;
    web.createWebView();
    web.show();

    return a.exec();