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 afixup()
function.You can set the acceptable range in one call with
setRange()
, or withsetBottom()
andsetTop()
. Set the number of decimal places withsetDecimals()
. Thevalidate()
function returns the validation state.
QDoubleValidator
uses itslocale()
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 thelocale()
also affect the way the number is interpreted. For example, sinceRejectGroupSeparator
is not set by default, the validator will accept group separators. It is thus recommended to usetoDouble()
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:
- 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 frombottom
totop
inclusive, with up todecimals
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
- 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
- PySide2.QtGui.QDoubleValidator.decimalsChanged(decimals)¶
- Parameters:
decimals – int
- PySide2.QtGui.QDoubleValidator.notation()¶
- Return type:
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.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
- 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
- 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
tomaximum
inclusive, with at mostdecimals
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
- 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
- PySide2.QtGui.QDoubleValidator.topChanged(top)¶
- Parameters:
top –
double
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