Message in Chinese (Traditional) (中文（繁體）)

擷取清單方塊中第一個選取項目的索引，如果沒有選取項目則為 -1。

Unlocalized message

Retrieves the index of the first selection in the list box, or -1 if there is no selection.

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Available localized messages
Finnish (suomi) French (Français) Dutch (Nederlands) Hungarian (magyar) German (Deutsch) Italian (Italiano) Korean (한국어) Hebrew (עברית) Japanese (日本語) Prior (Message) Greek (Ελληνικά) Polish (Polski) Spanish (Español) Portuguese (Portugal) (Português (Portugal)) Portuguese (Brazil) (Português (Brasil)) Norwegian (Bokmal) (Norsk (Bokmål)) Russian (Русский) Swedish (Svenska) Next (Message) Turkish (Türkçe) Arabic (العربية) Chinese (Simplified) (中文(简体)) Czech (Čeština) Danish (Dansk) Chinese (Simplified) (中文(简体)) Chinese (Traditional) (中文（繁體）)