Specifies the previous key state. The value is 1 if the key is down before the message is sent, or it is 0 if the key is up.是什么意思_Specifies the previous key state. The value is 1 if the key is down before the message is sent, or it is 0 if the key is up.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句