CEF String Visitor: Asynchronously Accessing HTML Content in Chromium Embedded Framework

"// Implementation of the CefStringVisitor interface.\nclass Visitor : public CefStringVisitor {\n public:\n Visitor() {}\n\n // Called asynchronously when the HTML contents are available.\n virtual void Visit(const CefString& string) override {\n // Do something with |string|...\n }\n\n IMPLEMENT_REFCOUNTING(Visitor);\n};\n\nbrowser->GetMainFrame()->GetSource(new Visitor());" This code is an implementation class using the CefStringVisitor interface. CefStringVisitor is an interface in the CEF (Chromium Embedded Framework) library used for asynchronously accessing HTML content. \n\nThe Visitor class in the code inherits from CefStringVisitor. It overrides the Visit method, which is called asynchronously when the HTML content is available. In the Visit method, you can process the incoming string parameter. \n\nThe last line of code is an example that calls the GetMainFrame method of the browser object to get the main frame of the browser. It then uses the GetSource method of the main frame to asynchronously get the HTML source code. A Visitor object is passed as a parameter to the GetSource method, so when the HTML content is available, the Visit method of the Visitor object is called and passed the string containing the HTML content. You can process the HTML content in the Visit method.