QDoubleValidator

The QDoubleValidator class provides range checking of floating-point numbers. More…

Synopsis

Functions

• def bottom ()

• def decimals ()

• def notation ()

• def setBottom (arg__1)

• def setDecimals (arg__1)

• def setNotation (arg__1)

• def setTop (arg__1)

• def top ()

Virtual functions

• def setRange (bottom, top[, decimals=0])

Signals

• def bottomChanged (bottom)

• def decimalsChanged (decimals)

• def notationChanged (notation)

• def topChanged (top)

Detailed Description

QDoubleValidator provides an upper bound, a lower bound, and a limit on the number of digits after the decimal point. It does not provide a fixup() function.

You can set the acceptable range in one call with setRange() , or with setBottom() and setTop() . Set the number of decimal places with setDecimals() . The validate() function returns the validation state.

QDoubleValidator uses its locale() to interpret the number. For example, in the German locale, “1,234” will be accepted as the fractional number 1.234. In Arabic locales, QDoubleValidator will accept Arabic digits.

Note

The 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 toDouble() to obtain the numeric value.

See also

QIntValidator QRegExpValidator toDouble() Line Edits Example

class PySide2.QtGui.QDoubleValidator([parent=None])

PySide2.QtGui.QDoubleValidator(bottom, top, decimals[, parent=None])

param parent:

PySide2.QtCore.QObject

param bottom:

double

param top:

double

param decimals:

int

Constructs a validator object with a parent object that accepts any double.

Constructs a validator object with a parent object. This validator will accept doubles from bottom to top inclusive, with up to decimals digits after the decimal point.

PySide2.QtGui.QDoubleValidator.Notation

This enum defines the allowed notations for entering a double.

Constant	Description
QDoubleValidator.StandardNotation	The string is written as a standard number (i.e. 0.015).
QDoubleValidator.ScientificNotation	The string is written in scientific form. It may have an exponent part(i.e. 1.5E-2).

PySide2.QtGui.QDoubleValidator.bottom()

Return type:

double

This property holds the validator’s minimum acceptable value.

By default, this property contains a value of -infinity.

See also

setRange()

PySide2.QtGui.QDoubleValidator.bottomChanged(bottom)

Parameters:

bottom – double

PySide2.QtGui.QDoubleValidator.decimals()

Return type:

int

This property holds the validator’s maximum number of digits after the decimal point.

By default, this property contains a value of 1000.

See also

setRange()

PySide2.QtGui.QDoubleValidator.decimalsChanged(decimals)

Parameters:

decimals – int

PySide2.QtGui.QDoubleValidator.notation()

Return type:

Notation

This property holds the notation of how a string can describe a number.

By default, this property is set to ScientificNotation .

See also

Notation

PySide2.QtGui.QDoubleValidator.notationChanged(notation)

Parameters:

notation – Notation

PySide2.QtGui.QDoubleValidator.setBottom(arg__1)

Parameters:

arg__1 – double

This property holds the validator’s minimum acceptable value.

By default, this property contains a value of -infinity.

See also

setRange()

PySide2.QtGui.QDoubleValidator.setDecimals(arg__1)

Parameters:

arg__1 – int

This property holds the validator’s maximum number of digits after the decimal point.

By default, this property contains a value of 1000.

See also

setRange()

PySide2.QtGui.QDoubleValidator.setNotation(arg__1)

Parameters:

arg__1 – Notation

This property holds the notation of how a string can describe a number.

By default, this property is set to ScientificNotation .

See also

Notation

PySide2.QtGui.QDoubleValidator.setRange(bottom, top[, decimals=0])

Parameters:

• bottom – double

• top – double

• decimals – int

Sets the validator to accept doubles from minimum to maximum inclusive, with at most decimals digits after the decimal point.

PySide2.QtGui.QDoubleValidator.setTop(arg__1)

Parameters:

arg__1 – double

This property holds the validator’s maximum acceptable value.

By default, this property contains a value of infinity.

See also

setRange()

PySide2.QtGui.QDoubleValidator.top()

Return type:

double

This property holds the validator’s maximum acceptable value.

By default, this property contains a value of infinity.

See also

setRange()

PySide2.QtGui.QDoubleValidator.topChanged(top)

Parameters:

top – double