Dynamically add an in memory Bitmap to a List

Question

I'm trying to dynamically add an in memory Bitmap to a List
control. I'm trying to create a thumbnail
from a larger bmp image and display the thumbnail in the
list. The thumbnail images are being created ok
but the bitmaps are not displaying in the List control. The
code I'm using is shown below. Apparently I can't
use a collection of bitmaps in the List. Previously I had a
collection of pathnames as strings that pointed to
jpgs on disk and it displayed ok. Does anyone know how I can
get the Bitmaps to display?
<mx:List id="fileList" x="10"y="10" width="231"
height="648" rowHeight="160" columnWidth="120 enabled="true"
click="loadImage()" itemRenderer="mx.controls.Image"
dataProvider="{myProvider}"></mx:List>
public var anArray:Array = new Array();
public var myProvider:ArrayCollection = new
ArrayCollection(anArray);
var thumbnail:Bitmap = new Bitmap(new
BitmapData(thumbSize,thumbSize,true,0));
thumbnail.bitmapData.draw(bmp,matrix);
myProvider.addItem(thumbnail);

Answer 1

without looking at what tables you are using and and how you built the query this is what I can think of:
Please write this in record processing section:
fields material/stock/req are the running variables in meaning database field names.
lv_ava is the new field that needs to be created.
data lv_stock type INSME.
data lv_req type insme.
at new material.
  lv_stock = stock.
  clear :lv_req, req.
end at.
  lv_req = lv_req + req.
  lv_ava = stock-lv_req.