How to change font in TWebBrowser?

问题

This question is related to: Which is the best way to load a string (HTML code) in TWebBrowser?

Iam trying to change font in TWebBrowser with doc.body.style.fontFamily but nothing happens. The font is still TimesNewRoman.

procedure THTMLEdit.SetHtmlCode(CONST HTMLCode: string);
VAR
   Doc: Variant;
begin
 if NOT Assigned(wbBrowser.Document)
 then wbBrowser.Navigate('about:blank');

 WHILE wbBrowser.ReadyState < READYSTATE_INTERACTIVE
   DO Application.ProcessMessages;

 Doc := wbBrowser.Document;
 Doc.Clear;
 Doc.Write(HTMLCode);
 doc.body.style.fontFamily:='Arial'; <------ won't work
 Doc.DesignMode := 'On';
 Doc.Close;
end;

回答1:

You need to let the document be interactive again after you close the document. e.g.:

procedure TForm1.SetHtmlCode(CONST HTMLCode: string);
VAR
   Doc: Variant;
begin
  if NOT Assigned(wbBrowser.Document)
  then wbBrowser.Navigate('about:blank');

  //WHILE wbBrowser.ReadyState < READYSTATE_INTERACTIVE // not really needed
  //DO Application.ProcessMessages;

  Doc := wbBrowser.Document;
  //Doc.Clear; // not needed
  Doc.Write(HTMLCode);
  Doc.Close; 
  Doc.DesignMode := 'On';

  WHILE wbBrowser.ReadyState < READYSTATE_INTERACTIVE
  DO Application.ProcessMessages;

  doc.body.style.fontFamily:='Arial';

  ShowMessage(doc.body.outerHTML); // test it
end;

But I think the best way is to handle the OnDocumentComplete where you know you have a valid document/body, and set the style or what ever else needed.

来源：https://stackoverflow.com/questions/41957051/how-to-change-font-in-twebbrowser

标签

Delphi

font-face

twebbrowser