var

   dispZipItems : IDispatch; {IDispatch pointer} 
   ZipItems : XceedZipItems; {The collection} 
   ZipItem : XceedZipItem; {One item} 
   ItemIndex : integer; {Index variable} 
   vaIndex : OleVariant; {Index as a variant} 
   ResultCode : XcdError; {To check return value) 

begin

   { Make sure to place an Xceed Zip control named 'xZip' on a form, } 
   { as well as a list box named 'Listbox1' }  

   xZip.License( 'your license key' );

   xZip.ZipFilename := 'c:\temp\test.zip'; {The zip file to list}  

   ResultCode := xZip.GetZipContents(DispZipItems, xcfCollection); {Fill collection} 

   {Check if it worked successfully} 
   if ResultCode = 0 then  
   begin 
      ZipItems := dispZipItems As XceedZipItems; {Get IXceedZipItems interface}  

      ItemIndex := 1; {Starting item} 

      while ItemIndex <= ZipItems.Count do {Loop through items} 
      begin 
         vaIndex := ItemIndex; {Convert to variant} 
         ZipItem := ZipItems.Item[ vaIndex ]; {Get current item} 
         ListBox1.Items.Add(ZipItem.Filename); {Display item name} 
         ItemIndex := ItemIndex + 1; {Go to next item} 
      end; 
   end 
   else 
      ShowMessage ('Unsuccessful. Error # ' + inttostr(ResultCode)); 
end;