PyQt5 QSpinBox – 如何恢复几何图形

在本文中，我们将看到如何从保存的数据中恢复旋转框的几何形状。保存几何有助于为顶级旋转框小部件保存当前几何和状态，这可以在saveGeometry的帮助下完成。保存数据可以存储在任何外部文件或任何变量中，也可以恢复用于其他用途。

为了做到这一点，我们使用带有旋转框对象的restoreGeometry方法。

Syntax : spin_box.restoreGeometry(byte_array)

Argument : It takes QByteArray object argument

Return : It returns bool i.e True for success else False

下面是实现

Python3

# 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(1, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("PREFIX ")
  
        # setting suffix to spin
        self.spin.setSuffix(" SUFFIX")
  
        # creating a label
        label = QLabel(self)
  
        # making the label multi line
        label.setWordWrap(True)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 200, 60)
  
        # saving the geometry
        value = self.spin.saveGeometry()
  
        # changing the geometry
        self.spin.setGeometry(10, 10, 50, 50)
  
        # restoring the old geometry
        success = self.spin.restoreGeometry(value)
  
        # setting text to the label
        label.setText("Restored Geometry : " + str(success))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：