Call a JavaScript function from C++ using QtWebkit

[Spitfire]

You didn't answer wysota's question.

How do you call function inside iFrame from the parent document?
If you can answer this question - you will answer yourself how to call it from c as the approach is the same.

As an alternative you can try QWebPage::currentFrame() or QWebPage::frameAt().

If you don't know how to call js inside iFrame from parent document consider this:

QWebView::page()->mainFrame()->evaluateJavaScript( "function call_iFrame() { document.getElementById('iframe_id').contentWindow.method_inside_iframe(); }" )

QWebView::page()->mainFrame()->evaluateJavaScript( "function call_iFrame() { document.getElementById('iframe_id').contentWindow.method_inside_iframe(); }" )

To copy to clipboard, switch view to plain text mode 

That should get you going.

[SlyMaximus]

As an alternative you can try QWebPage::currentFrame() or QWebPage::frameAt().

If you don't know how to call js inside iFrame from parent document consider this:

QWebView::page()->mainFrame()->evaluateJavaScript( "function call_iFrame() { document.getElementById('iframe_id').contentWindow.method_inside_iframe(); }" )

QWebView::page()->mainFrame()->evaluateJavaScript( "function call_iFrame() { document.getElementById('iframe_id').contentWindow.method_inside_iframe(); }" )

To copy to clipboard, switch view to plain text mode 

That should get you going.

I am sorry I am resurrecting this topic, but following it I think this topic is incomplete and my question might start from this point.
Into an application that use a WebView I am loading some web content. Trying to execute a JavaScript code that call a alert() window directly into evaluateJavaScript() is fine, but calling it into a function it fails.

QString strTest1 ("alert(\"this is sly!\"); null ");
QVariant f1result = webView->page()->mainFrame()->evaluateJavaScript( strTest1 );  // fine
QString strTest2 ("function alert_something() { alert(\"this is sly!\"); } ");
QVariant f2result = webView->page()->mainFrame()->evaluateJavaScript( strTest2 );  // bad
 
qDebug() << f2result.toString(); // returns nothing

QString strTest1 ("alert(\"this is sly!\"); null ");
QVariant f1result = webView->page()->mainFrame()->evaluateJavaScript( strTest1 );  // fine
QString strTest2 ("function alert_something() { alert(\"this is sly!\"); } ");
QVariant f2result = webView->page()->mainFrame()->evaluateJavaScript( strTest2 );  // bad

qDebug() << f2result.toString(); // returns nothing

To copy to clipboard, switch view to plain text mode 

I can't figure why calling that trivial function call fails... Ideas?

[anda_skoa]

Your second JavaScript snippet only contains a function definition, not a call to that function.

Cheers,
_

[SlyMaximus]

Your second JavaScript snippet only contains a function definition, not a call to that function.

Cheers,
_

Loolll! I think I was blind, of-course we need that call.
10x!