unit1.pas

Get FileSize from DLL (Delphi source code)

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  bInKBytes: Boolean;
  sFileToExamine: string;
  SearchRec: TSearchRec;
  sgPath: string;
  inRetval, I1: Integer;
begin
  sgPath := ExpandFileName(sFileToExamine);
  try
    inRetval := FindFirst(ExpandFileName(sFileToExamine), faAnyFile, SearchRec);
    if inRetval = 0 then
      I1 := SearchRec.Size
    else
      I1 := -1;
  finally
    SysUtils.FindClose(SearchRec);
  end;
  showmessage(IntToStr(I1));
end;

end.