[Dev-C++] combobox usage help

[Zodiaq <zo...@ac...>]

Hello all Dev-cpp-users,

   I got big problem that I can't pass... in my app I want to use combobox,
i.e. in .rc file defined like this:
COMBOBOX        IDC_OPTIONS, 15, 80, 100, 11, WS_TABSTOP | CBS_DROPDOWNLIST | CBS_HASSTRINGS
i know how to add new string to control but I can't force this control to
show contents using dropdown list... when I click only line shows below but
nothing else happens - I'm sure I need one more function, but which?? When I
try to process CBN_DROPDOWN and in response send:
SendDlgItemMessage( hwnd, IDC_MY_COMBO, CB_SHOWDROPDOWN, TRUE, 0 );
my program just crashes... even tried very simple dialog with 3 controls,
but the same happens... help!

-- 
regards, Zodiaq...