Message in Chinese (Simplified) (中文(简体))
检索列表框中第一个选项的索引,如果没有选项,则为 -1。
Unlocalized message
Retrieves the index of the first selection in the list box, or -1 if there is no selection.
Search by Google检索列表框中第一个选项的索引,如果没有选项,则为 -1。
Retrieves the index of the first selection in the list box, or -1 if there is no selection.
Search by Google