Q : DateTimeCtrl with "Show None" and "Allow Edit"

I'm using a CDateTimeCtrl with a Shirt Date format. I set Show None and Allow Edit to show the little check box, and also allow keyboard editing of the date.

When I click on the CDateTimeCtrl to edit the date with the keyboard the check box is overwritten by the selected date. The characters that form the date, seem to be shifted about two characters to the left, and overwrite the Show none check box. Once the editing of the date is finished, everything is redraw OK, but during the editing it just look rather "dirty".

Can someone please tell me either what I am doing wrong, or how to stop this please??

Thanks in advance....

Jeremy Davis