使用 QAxWidget 在 qt 中记录完成的信号

Question

我在 /examples/activeqt/webbrowser 中使用 qt 内置示例，我正在尝试使用 DocumentComplete SIGNAL。我的目的是在 QAxWidget 中使用嵌入式 Internet Explorer，并在 DocumentComplete 之后弹出一条消息（带有来自网站的内容）。 NavigateComplete 信号对我来说不够好...

代码可以在这里看到：qt Web browser Example

class MainWindow : public QMainWindow, public Ui::MainWindow
{
    Q_OBJECT
public:
    MainWindow();

public slots:
    void on_WebBrowser_TitleChange(const QString &title);
    void on_WebBrowser_ProgressChange(int a, int b);
    void on_WebBrowser_CommandStateChange(int cmd, bool on);
    void on_WebBrowser_BeforeNavigate();
    void on_WebBrowser_NavigateComplete(const QString &address);
    void on_WebBrowser_DocumentComplete(IDispatch*,QVariant&)

    void on_actionGo_triggered();
    void on_actionNewWindow_triggered();
    void on_actionAddBookmark_triggered();
    void on_actionAbout_triggered();
    void on_actionAboutQt_triggered();
    void on_actionFileClose_triggered();

private:
    QProgressBar *m_progressBar;
 
};

MainWindow::MainWindow()
{
    setupUi(this);
  
    connect(m_addressEdit, SIGNAL(returnPressed()), actionGo, SLOT(trigger()));

    connect(actionBack, SIGNAL(triggered()), WebBrowser, SLOT(GoBack()));
    connect(actionForward, SIGNAL(triggered()), WebBrowser, SLOT(GoForward()));
    connect(actionStop, SIGNAL(triggered()), WebBrowser, SLOT(Stop()));
    connect(actionRefresh, SIGNAL(triggered()), WebBrowser, SLOT(Refresh()));
    connect(actionHome, SIGNAL(triggered()), WebBrowser, SLOT(GoHome()));
    connect(actionSearch, SIGNAL(triggered()), WebBrowser, SLOT(GoSearch()));
    connect(WebBrowser,SIGNAL(DocumentComplete(IDispatch*,QVariant&), this, SLOT(on_WebBrowser_DocumentComplete(IDispatch*,QVariant&)))
}
void MainWindow::on_WebBrowser_DocumentComplete(IDispatch*,QVariant&)
{
    QMessangeBox x;
    x.setText("pop-up");
    x.exec();
}

dubbuger 说：没有这样的插槽 MainWindow::on_WebBrowser_DocumentComplete(IDispatch*,QVaria‌ nt&)

Answer 1

只要解决方法需要以上评论：

MyWidgetUsesActiveX::MyWidgetUsesActiveX()
{
    ///
    connect(m_pActiveX, SIGNAL(signal(const QString&, int, void*)),
        this, SLOT(activexEventHandler(const QString&, int, void*)));
}

void MyWidgetUsesActiveX::activexEventHandler(
                             const QString &name, int argc, void *argv)
{
    VARIANTARG *params = (VARIANTARG*)argv;

    // See what events fired
    qDebug() << "Event:" << name << "argc:" << argc;

    // some concrete example
    if (name == "OnRemoteWindowDisplayed")
    {
        // Extract parameters
        _variant_t varValue = params[argc-1];
        bool bDisplayed = (bool)varValue;

        // hwnd
        varValue = params[argc-2];
        int iResult = (int)varValue;

        varValue = params[argc-3];
        int windowAttribute = (int) varValue;

        // CALL that stubborn slot we cannot have called otherwise
        onRemoteWindowDisplayed(bDisplayed, iResult, windowAttribute);
    }
    else if (name == "OnSomethingElse")
    {
        // extract concrete parameters and call the handler from here
        // onSomethingElse(param1, param2, param3);
    }
    else
    {
        // Log it?
    }
}

Answer 2

我通过重新生成 .moc 文件解决了这个问题。在构建配置下，qmake 的文件夹位置是错误的。通过将其更正到项目位置解决了我的问题。该插槽现在已被识别。谢谢大家的帮助。

Qt Build Configuration

使用 QAxWidget 在 qt 中记录完成的信号

Document Completed Signal inside qt using QAxWidget

c++

qt

qt5

internet-explorer-11

qaxwidget