kencclin@小英: 7月 2014

2014年7月2日星期三

[Qt4] How to change dynamically QWebFrame contents?

[Qt4] How to change dynamically QWebFrame contents?

Firstly, the setHtml will cause the loadFinished signal to be posted again, causing an infinite loop. I have attached working code of what you want to do.

#include "mainwindow.h"

#include "ui_mainwindow.h"

#include <QtWebKit/QWebView>

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),

    ui(new Ui::MainWindow)

    ui->setupUi(this);

    connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(slotloadFinished(bool)));

    ui->webView->load(QUrl("http://www.google.com"));

MainWindow::~MainWindow()

    disconnect(ui->webView, 0, this, 0);

    delete ui;

void MainWindow::slotloadFinished(bool okay)

    disconnect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(slotloadFinished(bool)));

    ui->webView->setHtml("<html><body>test</body></html>");

    connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(slotloadFinished(bool)));

Instead of the disconnect and connect, you could do this..

void MainWindow::slotloadFinished(bool okay)
{
    ui->webView->blockSignals(true);
 
    ui->webView->setHtml("<html><body>test</body></html>");
 
    ui->webView->blockSignals(false);
}

Ref:
http://qt-project.org/forums/viewthread/6742/#39382

2014年7月1日星期二

[Qt4] How I can get all “input” elements from webview ?

[Qt4] How I can get all “input” elements from webview ?

void Class::getElements()

    QWebElementCollection collection = ui->cseriveOpenAPI_WebView->page()->mainFrame()->findAllElements("input");

    foreach (QWebElement element, collection)

        qDebug() << "title:" << element.attribute("title");

Ref :
https://qt-project.org/forums/viewthread/28920
http://qt-project.org/forums/viewthread/11604
http://stackoverflow.com/questions/2034981/how-to-manipulate-pages-content-inside-webkit-window-using-qt-and-qtwebkit

2014年7月2日 星期三

[Qt4] How to change dynamically QWebFrame contents?

2014年7月1日 星期二

[Qt4] How I can get all “input” elements from webview ?

2014年7月2日星期三

2014年7月1日星期二