check any software installed on client computer

[DeddyH]

Something like this

Delphi-Quellcode:

function SkypeInstalled: Boolean;
begin
  (* Code *)
end;

procedure TSomeForm.SomeButtonClick(Sender: TObject);
begin
  if SkypeInstalled then
    ShowMessage('Skype is already installed')
  else
    ShowMessage('Skype has not been installed yet');
end;