[Solved]How to change dynamically QWebFrame contents?

zither · wrote on 12 Jun 2011, 15:05

Dear all friends,

I would like to know how to change dynamically QWebFrame contents?

Thanks

loladiro · wrote on 12 Jun 2011, 15:56

Could you be a little more specific? Do you mean the "load() function":http://doc.qt.nokia.com/4.7-snapshot/qwebframe.html#load ?

zither · wrote on 12 Jun 2011, 17:21

No, I want to set setHtml() function & want to show newly set html on webframe...
Thanks

loladiro · wrote on 12 Jun 2011, 17:45

Well, AFAIK, setHtml should change the content immediately. If you are looking for a widget (not a frame inside an already exiting Page/Widget), you should use "QWebView":http://doc.qt.nokia.com/4.7-snapshot/qwebview.html

zither · wrote on 12 Jun 2011, 18:06

Here is code. WebView is abstract of QWebView

@void WebView::loadFinished()
{
page()->mainFrame()->setHtml(newHtml);
}
@
I want to change html after finished loading of that page
Thanks

zither · wrote on 12 Jun 2011, 19:40

I found some reason,
I set view-> setHtml(newHtml);

They change but, change to original just after finished
I think that may connect with changeUrl signal but I can't find out..

Plz help me
Thanks

jim_kaiser · wrote on 12 Jun 2011, 20:12

Hi zither,

Could you post the related code of your WebView. 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("&lt;html&gt;&lt;body>test&lt;/body&gt;&lt;/html>");

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

}
@

jim_kaiser · wrote on 12 Jun 2011, 20:15

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

@
void MainWindow::slotloadFinished(bool okay)
{
ui->webView->blockSignals(true);

ui->webView->setHtml("&lt;html&gt;&lt;body>test&lt;/body&gt;&lt;/html>");

ui->webView->blockSignals(false);

}
@

zither · wrote on 12 Jun 2011, 20:36

It's work.. :)
Thanks to all

loladiro · wrote on 12 Jun 2011, 23:06

Good to hear that. Also, could you please add [Solved] in front of the title (by editing the first post).