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link管理  ›  PyQt5 QSpinBox - Getting System Identifier - GeeksforGeeks
python pyqt5 spin
https://www.geeksforgeeks.org/pyqt5-qspinbox-getting-system-identifier/
苦恼的麦片
1 月前

In this article we will see how we can get effective window system identifier of the spin box. Effective identifier means the native parent’s window system identifier(ID) of the spin box.

In order to do this we use effectiveWinId method

Syntax : spin_box.effectiveWinId()

Argument : It takes no argument

Return : If the spin box is native, this function returns the native widget ID. Otherwise, the window ID of the first native parent widget, i.e., the top-level widget that contains this spin box, is returned.

Note : This method should be called after the opening of the main window i.e outside the main window class

Below is the implementation

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 , 999999 )
# setting prefix to spin
self .spin.setPrefix( "Prefix " )
# setting suffix to spin
self .spin.setSuffix( " Suffix" )
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# getting system identifier of spin box
identifier = window.spin.effectiveWinId()
# print the identifier
print (identifier)
# start the app
sys.exit(App. exec ())
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