WPTools V5 default font

Try this:

WP.DefaultAttr.SetFontName(fontname);
WP.DefaultAttr.SetFontSize(fontsize);

I stumbled about default properties in the manual under notes for upgraders:

Zitat

To set the default font for an editor use the OnClear event:

Code

procedure TForm1.DBWPRichText1Clear(Sender: TObject);
begin
DBWPRichText1.WritingAttr.Clear;
DBWPRichText1.WritingAttr.SetFontName('Arial');
DBWPRichText1.WritingAttr.SetFontSize(11);
end;