DM_LISTSORT

The DM_LISTSORT message is sent to the dialog manager to sort the elements of a DI_COMBOBOX or DI_LISTBOX list.

The ID of the dialog item to sort.

Sort direction: 0 - ascending, 1 - descending.

TRUE - the list has been sorted.
FALSE - error sorting list.

Control	Description
DI_LISTBOX	list
DI_COMBOBOX	combined list

// sort the list descending (from 'Z' to 'A')
Info.SendDlgMessage(hDlg,DM_LISTSORT,ID,1);