PyQt5 QSpinBox – 检查字符是否为 UTF-32 格式
在本文中,我们将了解如何检查旋转框字体中的给定字符是否为 UTF-32 格式。 UTF-32 是一种固定长度的编码,用于对 Unicode 代码点进行编码,每个代码点恰好使用 32 位。 UTF-32 是一种固定长度编码,与所有其他 Unicode 转换格式不同,后者是可变长度编码。
为此,我们将inFontUcs4
方法与微调框的 QFontMetrics 对象一起使用。
Syntax : font_metrics.inFontUcs4(unit_character)
Argument : It takes integer as argument
Return : It returns bool.
下面是实现
# 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.inFontUcs4(1)
# setting text to the label
label.setText(" UTF Format : " + str(check))
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出 :