drawgrid component

Of course I could use 64 Timage coponents, butthis approach is neither elegant nor efficient. I feel there should be something better...

Hello,

If your images are the same size then you could try storing them in an imagelist. Then in the OnDrawCell event you could calculate an index and draw the appropriate image on the drawgrid. eg :

procedure TForm1.DrawGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
var
  intIndex:integer;
  bmpTemp:TBitmap;
begin

  intIndex := (ACol * 8) + ARow; // calculate an index
  bmpTemp:=TBitmap.Create;
  try
    imagelist1.getbitmap(intIndex,bmpTemp); // get bitmap from imagelist
    DrawGrid1.Canvas.StretchDraw(Rect,bmpTemp); // draw the bitmap to fill the contents of the cell
  finally
    bmpTemp.Free; // free up temporary bitmap afterwards
  end;
end;

To prevent stretching of the bitmaps just set the DefaultRowHeight and DefaultColumnWidth to the same dimensions of your bitmaps.

Hope this helps

Jo

Hello again...

To make that event handler a bit more generic you should change the formula for the index to read   intIndex := (ACol * DrawGrid1.ColCount) + ARow;


Jo

You could try this:

procedure TForm1.DrawGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
var
  Bmp : TBitmap;
begin
  Bmp := TBitmap.Create;
  Bmp.LoadFromFile('c:\mybitmap' + IntToStr(((ARow + 1) * (ACol + 1))) + '.bmp');
  DrawGrid1.Canvas.Draw(Rect.Left, Rect.Top, Bmp);
  Bmp.Free;
end;

Cheers,

Alan