Question

EDIT:
Too many edits :doh:

I have identified the problem this time. There is a flaw in the way I am passing the Javascript code to the evaluatejavascript func. of QWebView.

Using Google maps’s API, when I click a pushButton attached to the slot holding the below code

this->page()->mainFrame()->evaluateJavaScript (QString ("Open(%1,2)").arg ( point.x ()).arg (point.y ()) );

the map pertaining to the location in question gets displayed.

Now if I want to add a marker to a particular coordinate, I do:

this->page()->mainFrame()->evaluateJavaScript (QString ("addMarker (%1, %2)").arg (point.x ()).arg (point.y ()) );

This code doesn’t execute. Any ideas?

Besides this, what is the way to add a user defined function to evaluateJavaScript for evaluation?

Answer 1

Finally found the answer!

Any Javascript function which has to be called from function evaluateJavaScript is supposed to be defined in an html file (included in) the C++ source, as shown below:

Now instead of creating a new add marker function, I have added its code in the Open function defined below:

var map;

function initialize()
{
      if (GBrowserIsCompatible()) 
      {
            map = new GMap2(document.getElementById("map"));
            map.setCenter( new GLatLng(0,0),1 );
      }
    }

function Open (x,y)
{
    map.setCenter (new GLatLng(x,y), 13);

    var point = new GLatLng (x,y);
    map.addOverlay (new GMarker(point));
}