的PyQt沒有顯示QSystemTrayIcon上XFCE/Ubuntu的16.04 Xenial Xerus

Question

#!/usr/bin/python 
# 
# GUI.py 
# 
# Copyright 2015 Ognjen Galic <gala@thinkpad> 
# 
# This program is free software; you can redistribute it and/or modify 
# it under the terms of the GNU General Public License as published by 
# the Free Software Foundation; either version 2 of the License, or 
# (at your option) any later version. 
# 
# This program is distributed in the hope that it will be useful, 
# but WITHOUT ANY WARRANTY; without even the implied warranty of 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
# GNU General Public License for more details. 
# 
# You should have received a copy of the GNU General Public License 
# along with this program; if not, write to the Free Software 
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
# MA 02110-1301, USA. 
# 
# 

################################# UI START ############################ 

from PyQt4 import QtCore, QtGui 
import sys 

try: 
    _fromUtf8 = QtCore.QString.fromUtf8 
except AttributeError: 
    def _fromUtf8(s): 
     return s 

try: 
    _encoding = QtGui.QApplication.UnicodeUTF8 
    def _translate(context, text, disambig): 
     return QtGui.QApplication.translate(context, text, disambig, _encoding) 
except AttributeError: 
    def _translate(context, text, disambig): 
     return QtGui.QApplication.translate(context, text, disambig) 

class Ui_MainWindow(object): 
    def setupUi(self, MainWindow): 
     MainWindow.setObjectName(_fromUtf8("MainWindow")) 
     MainWindow.resize(200, 100) 
     MainWindow.setWindowTitle(_fromUtf8("Example")) 
     self.main_widget = QtGui.QWidget(MainWindow) 
     self.main_widget.setObjectName(_fromUtf8("main_widget")) 
     self.horizontalLayout = QtGui.QHBoxLayout(self.main_widget) 
     self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout")) 
     self.exit_button = QtGui.QPushButton(self.main_widget) 
     self.exit_button.setObjectName(_fromUtf8("exit_button")) 
     self.horizontalLayout.addWidget(self.exit_button) 
     self.trayIcon = QtGui.QSystemTrayIcon(QtGui.QIcon("icon.png")) # <<<<<<<<<<< WONT SHOW 
     MainWindow.setCentralWidget(self.main_widget) 

     self.retranslateUi(MainWindow) 
     QtCore.QMetaObject.connectSlotsByName(MainWindow) 

     # --------------------------- QT ACTION BIND START ############# 

     self.exit_button.clicked.connect(self.exit_main) 

     # --------------------------- QT ACTION BIND STOP ############## 

    def retranslateUi(self, MainWindow): 
     self.exit_button.setText(_translate("MainWindow", "Exit", None)) 

     # --------------------------- MAIN FUNCTIONS START ############# 

    def exit_main(self): 
     sys.exit() 

     # --------------------------- MAIN FUNCTIONS STOP ############## 

def initUI(): 
    app = QtGui.QApplication(sys.argv) 
    MainWindow = QtGui.QMainWindow() 
    ui = Ui_MainWindow() 
    ui.setupUi(MainWindow) 
    MainWindow.show() 
    sys.exit(app.exec_()) 

################################### UI STOP ########################### 

def main(): 
    pass 

initUI() # Initialize the UI 
main() # Run the MAIN 

這裏是我的源，Python是2.7，AMD64，Ubuntu的16.04 Xenial Xerus而且Xfce 4.12，PyQt4的

的那樣是爲了顯示系統托盤圖標：

self.trayIcon = QtGui.QSystemTrayIcon(QtGui.QIcon("icon.png")) 

無所事事。然而，如果在手動trayIcon.show()的另一個.py文件上運行，它可以正常工作。

還在學習，和我一起裸露，但沒有看到理由它無法工作。

謝謝。

Answer 1

你缺少表演的一部分:)

self.exit_button.clicked.connect(self.exit_main) 

# --------------------------- QT ACTION BIND STOP ############## 

self.trayIcon.show() 

這對我的作品