PyQt5 QSpinBox – 获取焦点链中的下一个小部件
在本文中,我们将看到如何获得旋转框的下一个焦点链小部件。旋转框由两个子小部件组成,一个是行编辑,另一个是箭头按钮。焦点由小部件设置小部件,即焦点链在那里,当旋转框获得焦点时,它的一个孩子在另一个孩子之前获得焦点。
为了做到这一点,我们使用带有旋转框对象的nextInFocusChain
方法。
Syntax : spin_box.nextInFocusChain()
Argument : It takes no argument
Return : It returns QWidget 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(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)
# getting next in focus chain widget
value = self.spin.nextInFocusChain()
# setting text to the label
label.setText("Next widget in focus chain : " + 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 :