PyQt4 托盘

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Mutse Young 11月 24, 2012

本文主要讲解如何使用 PyQt4 实现一个托盘程序（本程序改写自 Qt4 系统托盘程序）。

源码

代码如下：

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

from PyQt4.QtGui import *
from PyQt4.QtCore import *
import sys

class Widget(QWidget):
	def __init__(self, parent = None):
		super(Widget, self).__init__(parent)

		self.setWindowTitle(self.tr("Tray"))
		self.setWindowIcon(QIcon("./img/tray.png"))

		trayIcon = QSystemTrayIcon(QIcon("./img/tray.png"), self)
		trayIcon.setToolTip(self.tr("this is a pyqt tray test"))
		trayIcon.setContextMenu(self.CreateTrayMenu()) 
		trayIcon.setVisible(True)

	def CreateTrayMenu(self):
		menu = QMenu(self.tr("menu"), self)
		minAction = QAction(self.tr("MinSize"), self)
		self.connect(minAction, SIGNAL("triggered()"), self.showMinimized)
		maxAction = QAction(self.tr("Maxsize"), self)
		self.connect(maxAction, SIGNAL("triggered()"), self.showMaximized)
		restoreAction = QAction(self.tr("Restore"), self)
		self.connect(restoreAction, SIGNAL("triggered()"), self.showNormal)
		quitAction = QAction(self.tr("Quit"), self)
		self.connect(quitAction, SIGNAL("triggered()"), qApp.quit)

		menu.addAction(minAction)
		menu.addAction(maxAction)
		menu.addAction(restoreAction)
		menu.addSeparator()
		menu.addAction(quitAction)

		return menu

if __name__ == "__main__":
	app = QApplication(sys.argv)
	app.setQuitOnLastWindowClosed(False)

	win = Widget()
	win.show()

	sys.exit(app.exec_())

解析

定义窗体

首先定义一个 Widget，并继承 QWidget，在构造函数 __init__ 中调用基类 QWidget 的构造函数 super(Widget, self).__init__(parent)。

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class Widget(QWidget):
	def __init__(self, parent = None):
		super(Widget, self).__init__(parent)

并设置窗体标题和窗体图标：

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self.setWindowTitle(self.tr("Tray"))
self.setWindowIcon(QIcon("./img/tray.png"))

创建托盘

创建托盘，并设置工具提示信息，上下文菜单和窗体可视化等属性。

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trayIcon = QSystemTrayIcon(QIcon("./img/tray.png"), self)
trayIcon.setToolTip(self.tr("this is a pyqt tray test"))
trayIcon.setContextMenu(self.CreateTrayMenu()) 
trayIcon.setVisible(True)

创建托盘菜单并连接相应的响应函数

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def CreateTrayMenu(self):

	# 创建菜单
	menu = QMenu(self.tr("menu"), self)

	# 窗体最小化
	minAction = QAction(self.tr("MinSize"), self)
	self.connect(minAction, SIGNAL("triggered()"), self.showMinimized)

	# 窗体最大化
	maxAction = QAction(self.tr("Maxsize"), self)
	self.connect(maxAction, SIGNAL("triggered()"), self.showMaximized)

	# 还原
	restoreAction = QAction(self.tr("Restore"), self)
	self.connect(restoreAction, SIGNAL("triggered()"), self.showNormal)

	# 退出
	quitAction = QAction(self.tr("Quit"), self)
	self.connect(quitAction, SIGNAL("triggered()"), qApp.quit)

	# 添加菜单项
	menu.addAction(minAction)
	menu.addAction(maxAction)
	menu.addAction(restoreAction)
	menu.addSeparator()
	menu.addAction(quitAction)

	return menu
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