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。
Syntax : spin_box.sizeIncrement()
Argument : It takes no argument
Return : It returns QSize object
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 :