PyQt5 QSpinBox – 如何恢复几何形状
在这篇文章中,我们将看到如何从保存的旋转盒中恢复几何图形。保存几何体有助于保存当前的几何体和顶层旋转盒部件的状态,这可以在saveGeometry的帮助下完成。保存的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,我们使用自旋盒对象的 restoreGeometry 方法。
语法: spin_box.restoreGeometry(byte_array)
参数: 它接受QByteArray对象的参数。
返回: 它返回bool,即成功为True,否则为False。
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(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 :