隐藏屏幕上的应用程序，但不能从任务栏

Question

我想隐藏屏幕上的应用程序，但不能从任务栏，我想这一点：

app = QtWidgets.QApplication([]) 
w = QtWidgets.QWidget() 
w.show() 
w.resize(0, 0) 

，但它不工作，任何想法？

Answer 1

我用的QMainWindow的代替QWidget的，然后我重写focusInEvent和focusOutEvent事件。

#!/usr/bin/python3 
# -*- coding: utf-8 -*- 

from PyQt5.QtWidgets import QMainWindow, QApplication 
from PyQt5.QtCore import Qt 
from sys import argv, exit 

class Window(QMainWindow): 
    def __init__(self): 
     super(Window, self).__init__() 
     self.setFocusPolicy(Qt.StrongFocus) 

    def focusInEvent(self, event): 
     print('focusInEvent') 
     self.setWindowTitle('focusInEvent') 
     self.showMinimized() 

    def focusOutEvent(self, event): 
     print('focusOutEvent') 
     self.setWindowTitle('focusOutEvent') 
#  self.showMinimized() 

if __name__ == '__main__': 
    app = QApplication([]) 
    w = Window() 
    w.showMinimized() 
    exit(app.exec_()) 

Answer 2

app = QtWidgets.QApplication([]) 
w = QtWidgets.QWidget() 
w.showMinimized()