procedure TForm1.Button1Click(Sender: TObject);

var

   TotalFiles : Integer; 
   CompressedBytes : Integer; 
   UncompressedBytes : Integer; 
   CompressionRatio : SmallInt; 
   IsZipFileSpanned : WordBool; 
   ResultCode : xcdError;  

begin

   XceedZip1.License( 'your license key' );

   ' Set the zip file name (the only property required to be set here) 
   XceedZip1.ZipFilename := 'c:\test\My zip file.zip';  

   ' Get the information 
   ResultCode := XceedZip1.GetZipFileInformation(TotalFiles, CompressedBytes, UncompressedBytes, CompressionRatio, IsZipFileSpanned); 

    ' Check the return value 
   If ResultCode <> xerSuccess Then 
      ListBox1.Items.Add("Unsuccessful. Error #" + Str(ResultCode) 
   else 
   begin 
      ListBox1.Items.Add("Successfully got the zip file's info"); 
      ListBox1.Items.Add("Total files: " + IntToStr(TotalFiles)); 
      ListBox1.Items.Add("Comp. size: " + IntToStr(CompressedBytes)); 
      ListBox1.Items.Add("Size: " + IntToStr(UncompressedBytes)); 
      ListBox1.Items.Add("Ratio: " + IntToStr(CompressionRatio)+"%"); 
      ListBox1.Items.Add("Spanned: " + IntToStr(IsZipFileSpanned)); 
   end; 
end;
end;