Retrieve the complete height and width of a browser beyond the visible part as wel

[learnQtptips]

Hi
I want to retrieve the height/width of the browser beyond the hidden part as well.

It should be the same as below in Visual studio

Code:

webbrowser1.document.body.scrollrectangle.height webbrowser1.document.body.scrollrectangle.width

I was trying to do this using dotnetfactory but it is throwing error.
Could you please help me in knowing the way out. even if we have some easier method please let me know.

please provide some scripts if possible