Qt入門-QLineEdit::setInputMask()
阿新 • • 發佈:2019-01-27
QLineEdit::setInputMask(const QString &inputMask)方法可以使Edit控制元件只允許輸入自定義的格式字串,inputMask引數設定格式化字串的掩碼。
inputMask可以是下列字元的組合
Character Meaning A ASCII alphabetic character required. A-Z, a-z. a ASCII alphabetic character permitted but not required. N ASCII alphanumeric character required. A-Z, a-z, 0-9. n ASCII alphanumeric character permitted but not required. X Any character required. x Any character permitted but not required. 9 ASCII digit required. 0-9. 0 ASCII digit permitted but not required. D ASCII digit required. 1-9. d ASCII digit permitted but not required (1-9). # ASCII digit or plus/minus sign permitted but not required. H Hexadecimal character required. A-F, a-f, 0-9. h Hexadecimal character permitted but not required. B Binary character required. 0-1. b Binary character permitted but not required. > All following alphabetic characters are uppercased. < All following alphabetic characters are lowercased. ! Switch off case conversion. \ Use \ to escape the special characters listed above to use them as separators.
示例:
“000.000.000.000;”是一個IP地址。
“HH:HH:HH:HH:HH:HH;0”是一個MAC地址。
“\\0\\xHHHH;0”是隻允許輸入一個16位的十六進位制數。
另外,一個很有用的技巧是組合使用QLineEdit::setInputMask和QLineEdit::setValidator可實現更復雜的輸入遮蔽和驗證。