QIntValidator¶

PyQt5.QtGui.QIntValidator: Inherits from QValidator.

Description¶

The QIntValidator class provides a validator that ensures a string contains a valid integer within a specified range.

Example of use:

# QValidator *validator = new QIntValidator(100, 999, this);
# QLineEdit *edit = new QLineEdit(this);

# // the edit lineedit will only accept integers between 100 and 999
# edit->setValidator(validator);

Below we present some examples of validators. In practice they would normally be associated with a widget as in the example above.

# QString str;
# int pos = 0;
# QIntValidator v(100, 900, this);

# str = "1";
# v.validate(str, pos);     // returns Intermediate
# str = "012";
# v.validate(str, pos);     // returns Intermediate

# str = "123";
# v.validate(str, pos);     // returns Acceptable
# str = "678";
# v.validate(str, pos);     // returns Acceptable

# str = "999";
# v.validate(str, pos);    // returns Intermediate

# str = "1234";
# v.validate(str, pos);     // returns Invalid
# str = "-123";
# v.validate(str, pos);     // returns Invalid
# str = "abc";
# v.validate(str, pos);     // returns Invalid
# str = "12cm";
# v.validate(str, pos);     // returns Invalid

Notice that the value 999 returns Intermediate. Values consisting of a number of digits equal to or less than the max value are considered intermediate. This is intended because the digit that prevents a number from being in range is not necessarily the last digit typed. This also means that an intermediate number can have leading zeros.

The minimum and maximum values are set in one call with setRange(), or individually with setBottom() and setTop().

QIntValidator uses its locale() to interpret the number. For example, in Arabic locales, QIntValidator will accept Arabic digits.

Note: The QLocale::NumberOptions set on the locale() also affect the way the number is interpreted. For example, since RejectGroupSeparator is not set by default, the validator will accept group separators. It is thus recommended to use toInt() to obtain the numeric value.

Methods¶

__init__(parent: QObject = None): Constructs a validator with a parent object that accepts all integers.

__init__(int, int, parent: QObject = None): Constructs a validator with a parent, that accepts integers from minimum to maximum inclusive.

bottom() → int: See also

setBottom().

fixup(str) → str: TODO

setBottom(int): See also

bottom().

setRange(int, int): Sets the range of the validator to only accept integers between bottom and top inclusive.

setTop(int): See also

top().

top() → int: See also

setTop().

validate(str, int) → (State, str, int): TODO