托盘图标应用程序的穿线 [英] threading for tray icon application
本文介绍了托盘图标应用程序的穿线的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想要一个托盘图标来通知我我的COM端口是否已插入.它应根据COM端口的状态每5秒更改一次.我还希望能够使用任务栏图标的上下文菜单杀死程序.我想出了如何具有刷新或菜单的功能,但我不知道如何同时具有这两种功能.
I want to have a tray icon to inform me whether or not my COM port is plugged-in. It should change every 5 seconds according to the state of the COM port. I also want the ability to kill the program using the contextual menu of the tray icon. I figured out how to have the refreshing or the menu, but I don't know how to have both.
import sys
import glob
import serial
import time
from PyQt4 import QtGui, QtCore
import sys
import threading
from multiprocessing import Process, Queue
#script needing python 3.4 , pyserial (via pip) and pyqt4 (via .exe available online)
def serial_ports():
if sys.platform.startswith('win'):
ports = ['COM' + str(i + 1) for i in range(256)]
result = []
for port in ports:
try:
s = serial.Serial(port)
s.close()
result.append(port)
except (OSError, serial.SerialException):
pass
return result
class SystemTrayIcon(QtGui.QSystemTrayIcon):
def __init__(self, icon, parent=None):
QtGui.QSystemTrayIcon.__init__(self, icon, parent)
menu = QtGui.QMenu(parent)
changeicon = menu.addAction("Update")
exitAction = menu.addAction("Exit")
self.setContextMenu(menu)
exitAction.triggered.connect(QtGui.qApp.quit)
changeicon.triggered.connect(self.updateIcon)
def updateIcon(self):
resultats = serial_ports()
icone = "red.ico"
for resultat in resultats:
if "COM3" in resultat:
icone = "green.ico"
break
self.setIcon(QtGui.QIcon(icone))
#update the icon (its color) according to the content of "resultat"
#missing code; purpose : wait 5 seconds while having the contextual menu of the tray icon still available
def main():
app = QtGui.QApplication(sys.argv)
w = QtGui.QWidget()
trayIcon = SystemTrayIcon(QtGui.QIcon("red.ico"), w)
#always starts with red icon
trayIcon.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
推荐答案
由于使用了无花果,因此使用QTimer进行了发现,它似乎是重复的,虽然不了解所有内容,但仍然有效:
Found out using QTimer thanks to figs, seems repetitive and didn't understand everything but it works :
class SystemTrayIcon(QtGui.QSystemTrayIcon):
def __init__(self, icon, parent=None):
QtGui.QSystemTrayIcon.__init__(self, icon, parent)
menu = QtGui.QMenu(parent)
changeicon = menu.addAction("Update")
exitAction = menu.addAction("Exit")
self.setContextMenu(menu)
exitAction.triggered.connect(QtGui.qApp.quit)
changeicon.triggered.connect(self.updateIcon)
self.updateIcon()
def updateIcon(self):
try:
timer = QtCore.QTimer()
timer.timeout.connect(self.updateIcon)
timer.start(5000)
resultats = serial_ports()
icone = "red.ico"
for resultat in resultats:
if "COM3" in resultat:
icone = "green.ico"
break
self.setIcon(QtGui.QIcon(icone))
finally:
QtCore.QTimer.singleShot(5000,self.updateIcon)
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