QLCDNumber¶
The
QLCDNumber
widget displays a number with LCD-like digits. More…
Synopsis¶
Functions¶
def
checkOverflow
(num)def
checkOverflow
(num)def
digitCount
()def
intValue
()def
mode
()def
segmentStyle
()def
setDigitCount
(nDigits)def
setMode
(arg__1)def
setSegmentStyle
(arg__1)def
smallDecimalPoint
()def
value
()
Slots¶
def
display
(num)def
display
(num)def
display
(str)def
setBinMode
()def
setDecMode
()def
setHexMode
()def
setOctMode
()def
setSmallDecimalPoint
(arg__1)
Signals¶
def
overflow
()
Detailed Description¶
It can display a number in just about any size. It can display decimal, hexadecimal, octal or binary numbers. It is easy to connect to data sources using the
display()
slot, which is overloaded to take any of five argument types.There are also slots to change the base with
setMode()
and the decimal point withsetSmallDecimalPoint()
.
QLCDNumber
emits theoverflow()
signal when it is asked to display something beyond its range. The range is set bysetDigitCount()
, butsetSmallDecimalPoint()
also influences it. If the display is set to hexadecimal, octal or binary, the integer equivalent of the value is displayed.These digits and other symbols can be shown: 0/O, 1, 2, 3, 4, 5/S, 6, 7, 8, 9/g, minus, decimal point, A, B, C, D, E, F, h, H, L, o, P, r, u, U, Y, colon, degree sign (which is specified as single quote in the string) and space.
QLCDNumber
substitutes spaces for illegal characters.It is not possible to retrieve the contents of a
QLCDNumber
object, although you can retrieve the numeric value withvalue()
. If you really need the text, we recommend that you connect the signals that feed thedisplay()
slot to another slot as well and store the value there.Incidentally,
QLCDNumber
is the very oldest part of Qt, tracing its roots back to a BASIC program on the Sinclair Spectrum .See also
- class PySide2.QtWidgets.QLCDNumber([parent=None])¶
PySide2.QtWidgets.QLCDNumber(numDigits[, parent=None])
- param parent:
- param numDigits:
uint
Constructs an LCD number, sets the number of digits to 5, the base to decimal, the decimal point mode to ‘small’ and the frame style to a raised box. The
segmentStyle()
is set toOutline
.The
parent
argument is passed to theQFrame
constructor.See also
Constructs an LCD number, sets the number of digits to
numDigits
, the base to decimal, the decimal point mode to ‘small’ and the frame style to a raised box. ThesegmentStyle()
is set toFilled
.The
parent
argument is passed to theQFrame
constructor.See also
- PySide2.QtWidgets.QLCDNumber.Mode¶
This type determines how numbers are shown.
Constant
Description
QLCDNumber.Hex
Hexadecimal
QLCDNumber.Dec
Decimal
QLCDNumber.Oct
Octal
QLCDNumber.Bin
Binary
If the display is set to hexadecimal, octal or binary, the integer equivalent of the value is displayed.
- PySide2.QtWidgets.QLCDNumber.SegmentStyle¶
This type determines the visual appearance of the
QLCDNumber
widget.Constant
Description
QLCDNumber.Outline
gives raised segments filled with the background color.
QLCDNumber.Filled
gives raised segments filled with the windowText color.
QLCDNumber.Flat
gives flat segments filled with the windowText color.
- PySide2.QtWidgets.QLCDNumber.checkOverflow(num)¶
- Parameters:
num – int
- Return type:
bool
This is an overloaded function.
Returns
true
ifnum
is too big to be displayed in its entirety; otherwise returnsfalse
.See also
- PySide2.QtWidgets.QLCDNumber.checkOverflow(num)
- Parameters:
num –
double
- Return type:
bool
Returns
true
ifnum
is too big to be displayed in its entirety; otherwise returnsfalse
.See also
- PySide2.QtWidgets.QLCDNumber.digitCount()¶
- Return type:
int
This property holds the current number of digits displayed.
Corresponds to the current number of digits. If
smallDecimalPoint
is false, the decimal point occupies one digit position.By default, this property contains a value of 5.
See also
- PySide2.QtWidgets.QLCDNumber.display(str)¶
- Parameters:
str – str
- PySide2.QtWidgets.QLCDNumber.display(num)
- Parameters:
num – int
This is an overloaded function.
Displays the number
num
.
- PySide2.QtWidgets.QLCDNumber.display(num)
- Parameters:
num –
double
This property holds the displayed value.
This property corresponds to the current value displayed by the LCDNumber.
If the displayed value is not a number, the property has a value of 0.
By default, this property contains a value of 0.
- PySide2.QtWidgets.QLCDNumber.intValue()¶
- Return type:
int
This property holds the displayed value rounded to the nearest integer.
This property corresponds to the nearest integer to the current value displayed by the LCDNumber. This is the value used for hexadecimal, octal and binary modes.
If the displayed value is not a number, the property has a value of 0.
By default, this property contains a value of 0.
- PySide2.QtWidgets.QLCDNumber.mode()¶
- Return type:
This property holds the current display mode (number base).
Corresponds to the current display mode, which is one of
Bin
,Oct
,Dec
(the default) andHex
.Dec
mode can display floating point values, the other modes display the integer equivalent.
- PySide2.QtWidgets.QLCDNumber.overflow()¶
- PySide2.QtWidgets.QLCDNumber.segmentStyle()¶
- Return type:
This property holds the style of the LCDNumber.
Style
Result
Outline
Produces raised segments filled with the background color
Filled
(this is the default).Produces raised segments filled with the foreground color.
Flat
Produces flat segments filled with the foreground color.
Outline
andFilled
will additionally uselight()
anddark()
for shadow effects.
- PySide2.QtWidgets.QLCDNumber.setBinMode()¶
Calls
setMode
(Bin). Provided for convenience (e.g. for connecting buttons to it).See also
- PySide2.QtWidgets.QLCDNumber.setDecMode()¶
Calls
setMode
(Dec). Provided for convenience (e.g. for connecting buttons to it).See also
- PySide2.QtWidgets.QLCDNumber.setDigitCount(nDigits)¶
- Parameters:
nDigits – int
This property holds the current number of digits displayed.
Corresponds to the current number of digits. If
smallDecimalPoint
is false, the decimal point occupies one digit position.By default, this property contains a value of 5.
See also
- PySide2.QtWidgets.QLCDNumber.setHexMode()¶
Calls
setMode
(Hex). Provided for convenience (e.g. for connecting buttons to it).See also
- PySide2.QtWidgets.QLCDNumber.setMode(arg__1)¶
- Parameters:
arg__1 –
Mode
This property holds the current display mode (number base).
Corresponds to the current display mode, which is one of
Bin
,Oct
,Dec
(the default) andHex
.Dec
mode can display floating point values, the other modes display the integer equivalent.
- PySide2.QtWidgets.QLCDNumber.setOctMode()¶
Calls
setMode
(Oct). Provided for convenience (e.g. for connecting buttons to it).See also
- PySide2.QtWidgets.QLCDNumber.setSegmentStyle(arg__1)¶
- Parameters:
arg__1 –
SegmentStyle
This property holds the style of the LCDNumber.
Style
Result
Outline
Produces raised segments filled with the background color
Filled
(this is the default).Produces raised segments filled with the foreground color.
Flat
Produces flat segments filled with the foreground color.
Outline
andFilled
will additionally uselight()
anddark()
for shadow effects.
- PySide2.QtWidgets.QLCDNumber.setSmallDecimalPoint(arg__1)¶
- Parameters:
arg__1 – bool
This property holds the style of the decimal point.
If true the decimal point is drawn between two digit positions. Otherwise it occupies a digit position of its own, i.e. is drawn in a digit position. The default is false.
The inter-digit space is made slightly wider when the decimal point is drawn between the digits.
See also
- PySide2.QtWidgets.QLCDNumber.smallDecimalPoint()¶
- Return type:
bool
This property holds the style of the decimal point.
If true the decimal point is drawn between two digit positions. Otherwise it occupies a digit position of its own, i.e. is drawn in a digit position. The default is false.
The inter-digit space is made slightly wider when the decimal point is drawn between the digits.
See also
- PySide2.QtWidgets.QLCDNumber.value()¶
- Return type:
double
This property holds the displayed value.
This property corresponds to the current value displayed by the LCDNumber.
If the displayed value is not a number, the property has a value of 0.
By default, this property contains a value of 0.
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