PyQt5 QSpinBox – 检查文本是否为粗体
在这篇文章中,我们将看到如何检查旋转框中的文本是否是粗体,为了设置字体,使用setFont方法,该方法需要QFont对象作为参数。为了使文本(即字体)变粗,我们必须获得旋钮箱的QFont对象,然后使其变粗,再将其重新分配给旋钮箱。为了获得有关字体的信息,我们必须获得自旋盒的QFontInfo对象,这可以通过fontInfo方法完成。
为了做到这一点,我们用spin box的QFontInfo对象来加粗方法
语法: font_info.bold()
参数: 它不需要参数
返回: 它返回bool
下面是实现方法
# 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")
# getting font of the spin box
font = self.spin.font()
# making font bold
font.setBold(True)
# reassigning the font to the spin box
self.spin.setFont(font)
# creating a label
label = QLabel(self)
# setting geometry to the label
label.setGeometry(100, 200, 300, 60)
# getting the font info
font_info = self.spin.fontInfo()
# getting bold status of text
check = font_info.bold()
# setting text to the label
label.setText("Bold ? : " + 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。