PyQt5 QSpinBox – 获取像素比例尺度
在这篇文章中,我们将看到如何获得旋转盒的像素比刻度。设备像素比是指旋转盒的物理像素和逻辑像素之间的比率。像素比标尺是变量测量标尺的类型,具有定量的性质。比率标尺允许任何研究人员比较间隔或差异。
为了做到这一点,我们使用devicePixelRatioFScale方法
语法: spin_box.devicePixelRatioFScale()
参数: 它不需要参数
返回: 它返回浮点数
以下是实现方法
# 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 pixel ratio scale
pixel_ratio_scale = self.spin.devicePixelRatioFScale()
# creating label
label = QLabel(self)
# setting geometry to the label
label.setGeometry(100, 200, 200, 70)
# making it multi line label
label.setWordWrap(True)
# setting text to the label
label.setText("Pixel Ratio Scale : " + str(pixel_ratio_scale))
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
window.spin.setFocus()
# start the app
sys.exit(App.exec())
输出: