QLineEdit::setInputMask(const QString & inputMask)方法可以使Edit控件只允许输入自定义的格式字符串,inputMask参数设置格式化字符串的掩码。
inputMask可以是下列字符的组合
- 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;”是一个IP地址。
“HH:HH:HH:HH:HH:HH;0”是一个MAC地址。
“\\0\\xHHHH;0”是只允许输入一个16位的十六进制数。
另外,一个很有用的技巧是组合使用QLineEdit::setInputMask和QLineEdit::setValidator可实现更复杂的输入屏蔽和验证。
本文详细介绍了如何使用QLineEdit::setInputMask方法来限制和控制Qt编辑控件的输入格式,并结合QLineEdit::setValidator实现更复杂的输入验证,通过实例展示了IP地址、MAC地址及十六进制数的输入限制。
1565

被折叠的 条评论
为什么被折叠?



