Extract and display version info from files

Problem/Question/Abstract:

Extract and display version info from files

Answer:

This routine shows how to retrieve version information from the Windows resources and displays it with a ShowMessage box:

procedure TForm1.GetVersionInfo;
const
  n_Info = 10;
  InfoStr: array[1..n_Info] of string =
  ('CompanyName', 'FileDescription', 'FileVersion', 'InternalName',
    'LegalCopyright', 'LegalTradeMarks', 'OriginalFilename',
    'ProductName', 'ProductVersion', 'Comments');
var
  Info: string;
  BuffSize,
    Len, i: Integer;
  Buff: PChar;
  Value: PChar;
begin
  Info := Application.ExeName;
  BuffSize := GetFileVersionInfoSize(PChar(Info), BuffSize);
  if BuffSize > 0 then
  begin
    Buff := AllocMem(BuffSize);
    Memo1.Lines.Add('FileVersionInfoSize=' + IntToStr(BuffSize));
    GetFileVersionInfo(PChar(Info), 0, BuffSize, Buff);
    Info := Info + ':';
    for i := 1 to n_Info do
      if VerQueryValue(Buff, PChar('StringFileInfo\040904E4\' +
        InfoStr[i]), Pointer(Value), Len) then
        Info := Info + #13 + InfoStr[i] + '=' + Value;
    FreeMem(Buff, BuffSize);
    ShowMessage(Info);
  end
  else
    ShowMessage('No FileVersionInfo found');
end;