In this article we will see how we can check if the given character is in the font of the spin box, in order to do this we have to get the QFontMetrics object of spin box which can be done with the help of fontmetrics
method.
In order to do this we use inFont
method with the spin box’s QFontMetrics object.
Syntax : font_metrics.inFont(ch)
Argument : It takes string as argument
Return : It returns bool.
Below is the implementation
# importing libraries from PyQt5.QtWidgets import * from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * from PyQt5.QtCore import * import sys
class Window(QMainWindow):
def __init__( self ):
super ().__init__()
# setting title
self .setWindowTitle( "Python " )
# setting geometry
self .setGeometry( 100 , 100 , 600 , 400 )
# calling method
self .UiComponents()
# showing all the widgets
self .show()
# method for widgets
def UiComponents( self ):
# creating spin box
self .spin = QSpinBox( self )
# setting geometry to spin box
self .spin.setGeometry( 100 , 100 , 250 , 40 )
# setting range to the spin box
self .spin.setRange( 0 , 999999 )
# setting prefix to spin
self .spin.setPrefix( "PREFIX " )
# setting suffix to spin
self .spin.setSuffix( " SUFFIX" )
# creating a label
label = QLabel( self )
# making label multi line
label.setWordWrap( True )
# setting geometry to the label
label.setGeometry( 100 , 200 , 300 , 60 )
# getting font metrics
f_metrics = self .spin.fontMetrics()
# checking if the character is in the font
check = f_metrics.inFont( 'I' )
# setting text to the label
label.setText( " 'I' in font ? : " + str (check))
# create pyqt5 app App = QApplication(sys.argv)
# create the instance of our Window window = Window()
# start the app sys.exit(App. exec ())
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Output :