[AccessD] Blanks in text box

Dear List:
 
I am trapping keystrokes in a text box and setting a filter in a list box
based on the current value in the text box.  But it won't accept and retain
trailing blanks.  If my client wants to search on R & R for example, he
presses R and the list box of names is filtered to all those beginning with
R.  if he then presses the space bar, it should show all the name beginning
with R-blank.  But of course, it strips the trailing blank.
 
Is there some trick to getting the trailing blanks to be included in the
string?
 
MTIA
 
Rocky