📜  PyQt5 QSpinBox – 获取大小增量

📅  最后修改于: 2022-05-13 01:54:25.333000             🧑  作者: Mango

PyQt5 QSpinBox – 获取大小增量

在本文中,我们将了解如何获取或不获取旋转框的大小增量值。当旋转框大小随主窗口大小而变化时,使用大小增量。如果旋转框定义了 sizeIncrement,则基本尺寸用于计算合适的旋转框尺寸。默认情况下,对于新创建的旋转框,此属性包含宽度和高度为零的大小。我们可以借助setSizeIncrement方法设置尺寸增量值。

以下是当主窗口变大时获取新旋转框大小的公式。

width = baseSize().width() + i * sizeIncrement().width()
height = baseSize().height() + j * sizeIncrement().height()

Here i, j are the size increment in the main window

为了做到这一点,我们使用带有旋转框对象的sizeIncrement方法。

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, 9)
  
        # setting prefix to spin
        self.spin.setPrefix("PREFIX ")
  
        # setting suffix to spin
        self.spin.setSuffix(" SUFFIX")
  
        # setting size increment
        self.spin.setSizeIncrement(10, 10)
  
        # creating a label
        self.label = QLabel(self)
  
        # making label multi line
        self.label.setWordWrap(True)
  
        # setting label geometry
        self.label.setGeometry(100, 200, 250, 60)
  
        # getting the size increment value
        value = self.spin.sizeIncrement()
  
        # setting text to the label
        self.label.setText("Size increment : " + str(value))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 :