Title: How to open a specific url in default browser
uses ShellApi;
The usage example is
ShellExecute(self.WindowHandle,'open','http://www.delphi-zone.com',nil,nil, SW_SHOWNORMAL);
If the url is not hardcoded then you have to use PAnsiChar, or Pchar if delphi version is bellow 2009
ShellExecute(self.WindowHandle,'open',PAnsiChar(url),nil,nil, SW_SHOWNORMAL);