Get the 0-based index of the file extension filter which was selected by the user, or -1 if no filter was selected. <p> This is an index into the FilterExtensions array and the FilterNames array. </p>
@return index the file extension filter index
@see #getFilterExtensions @see #getFilterNames
@since 3.4
See Implementation
Get the 0-based index of the file extension filter which was selected by the user, or -1 if no filter was selected. <p> This is an index into the FilterExtensions array and the FilterNames array. </p>
@return index the file extension filter index
@see #getFilterExtensions @see #getFilterNames
@since 3.4