How to determine Delphi Application Version

Question

Want to obtain Delphi Application build number and post into title bar

Answer 1

Thanks to the posts above, I made my own library for this purpose.

I believe that it is a little bit more correct than all other solutions here, so I share it - feel free to reuse it...

unit KkVersion;

interface

function FileDescription: String;
function LegalCopyright: String;
function DateOfRelease: String; // Proprietary
function ProductVersion: String;
function FileVersion: String;

implementation

uses
  Winapi.Windows, System.SysUtils, System.Classes, Math;

(*
  function GetHeader(out AHdr: TVSFixedFileInfo): Boolean;

  var
  BFixedFileInfo: PVSFixedFileInfo;
  RM: TMemoryStream;
  RS: TResourceStream;
  BL: Cardinal;

  begin
  Result := False;
  RM := TMemoryStream.Create;
  try
  RS := TResourceStream.CreateFromID(HInstance, 1, RT_VERSION);
  try
  RM.CopyFrom(RS, RS.Size);
  finally
  FreeAndNil(RS);
  end;

  // Extract header
  if not VerQueryValue(RM.Memory, '\\', Pointer(BFixedFileInfo), BL) then
  Exit;

  // Prepare result
  CopyMemory(@AHdr, BFixedFileInfo, Math.Min(sizeof(AHdr), BL));
  Result := True;
  finally
  FreeAndNil(RM);
  end;
  end;
*)

function GetVersionInfo(AIdent: String): String;

type
  TLang = packed record
    Lng, Page: WORD;
  end;

  TLangs = array [0 .. 10000] of TLang;

  PLangs = ^TLangs;

var
  BLngs: PLangs;
  BLngsCnt: Cardinal;
  BLangId: String;
  RM: TMemoryStream;
  RS: TResourceStream;
  BP: PChar;
  BL: Cardinal;
  BId: String;

begin
  // Assume error
  Result := '';

  RM := TMemoryStream.Create;
  try
    // Load the version resource into memory
    RS := TResourceStream.CreateFromID(HInstance, 1, RT_VERSION);
    try
      RM.CopyFrom(RS, RS.Size);
    finally
      FreeAndNil(RS);
    end;

    // Extract the translations list
    if not VerQueryValue(RM.Memory, '\\VarFileInfo\\Translation', Pointer(BLngs), BL) then
      Exit; // Failed to parse the translations table
    BLngsCnt := BL div sizeof(TLang);
    if BLngsCnt <= 0 then
      Exit; // No translations available

    // Use the first translation from the table (in most cases will be OK)
    with BLngs[0] do
      BLangId := IntToHex(Lng, 4) + IntToHex(Page, 4);

    // Extract field by parameter
    BId := '\\StringFileInfo\\' + BLangId + '\\' + AIdent;
    if not VerQueryValue(RM.Memory, PChar(BId), Pointer(BP), BL) then
      Exit; // No such field

    // Prepare result
    Result := BP;
  finally
    FreeAndNil(RM);
  end;
end;

function FileDescription: String;
begin
  Result := GetVersionInfo('FileDescription');
end;

function LegalCopyright: String;
begin
  Result := GetVersionInfo('LegalCopyright');
end;

function DateOfRelease: String;
begin
  Result := GetVersionInfo('DateOfRelease');
end;

function ProductVersion: String;
begin
  Result := GetVersionInfo('ProductVersion');
end;

function FileVersion: String;
begin
  Result := GetVersionInfo('FileVersion');
end;

end.