Set the current selection for the list box of a combo box.
CBSET dlg_id id index
dlg_id Specifies the identifier of the dialog box that contains the combo box. id Specifies the identifier of the combo box. index Specifies the index of a string contained in the specified combo box which will be set as the current selection.
Indexes are zero based, that is, the first string in the list box of a combo box is at index 0, the second string is at index 1 and so on.
If parameter index is specified with a value of -1 then the list box of the specified combo box is set to have no selection and the edit field of the combo box is cleared.