Autoticks in slider

If, in developer studio, I edit a dialog box (by resource editor) with a slider
with (in styles) Autoticks
it works well (I see the autoticks and, if I perfom a test (by the test button)
I see the slider with autoticks ).
But when I create the dialog box (by CreateDialog function)
and I show this dialog (by ShowWindow), I do not see the autoticks in slider .
(I also attempted to send a message of TBM_SETRANGE (to this slider)
but I never see the autoticks in this slider) .
Can you help me ?