- Code: Select all
CefRefPtr<CefFrame> FocusedFrame = browser->GetMainFrame(); // GetFocusedFrame
if (FocusedFrame)
{
CefRefPtr<CefV8Context> v8Context = FocusedFrame->GetV8Context();
if (v8Context)
{
// CURRENT SCROLL VALUE
v8Context->Eval("window.pageYOffset", ret, excep);
int value = ret->GetIntValue();
}
}
value integer is greater than zero only when no zoom is applied to the page. What could be the problem?
--- --- ---
Just one more hint, maybe it can help. Saving the code below as a .HTM file, open it with cefclient, and make sure the vertical scrollbar is visible, the page will correctly display an alert with the correct scroll value, regardless of the zoom factor. But, even on this page, the code above will get ZERO for the current scroll value (if zoom is not the default).
So I dont understand why window.pageYOffset works OK after a zoom change in the code below, but it fails in the code above.
- Code: Select all
<html>
<head>
<script type="text/javascript">
function GetScrollPosition () {
var scrollTop = window.pageYOffset;
alert ("The current vertical scroll amount: " + scrollTop + "px");
}
</script>
</head>
<body>
<div style="height:200px; width:600px; background-color:#e0a0a0;">
Please resize the browser window until the vertical scrollbar appears.
Please scroll the window vertically and click on the button.
</div>
<button onclick="GetScrollPosition ();">Get current scroll amount</button>
<div style="height:200px; width:600px; background-color:#e0a0a0;">
Please resize the browser window until the vertical scrollbar appears.
Please scroll the window vertically and click on the button.
</div>
</body>
</html>
