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  • 2022-05-20 06:31
infi.systray 该模块通过右键单击上下文菜单实现Windows系统任务栏图标。 安装 要安装infi.systray,请运行: pip install infi.systray 或者,您可以使用easy_install。 用法 在上下文菜单中创建带有一个选项的图标: from infi . systray import SysTrayIcon def say_hello ( systray ): print "Hello, World!" menu_options = (( "Say Hello" , None , say_hello ),) systray = SysTrayIcon ( "icon.ico" , "Example tray icon" , menu_options ) systray . start () SysTrayIcon的第一个参数是在
# `infi.systray` [![](]( This module implements a Windows system tray icon with a right-click context menu. ## Installation To install infi.systray, run: ``` pip install infi.systray ``` Alternatively, you can use easy_install. ## Usage Creating an icon with one option in the context menu: ```python from infi.systray import SysTrayIcon def say_hello(systray): print "Hello, World!" menu_options = (("Say Hello", None, say_hello),) systray = SysTrayIcon("icon.ico", "Example tray icon", menu_options) systray.start() ``` The first parameter to SysTrayIcon is a path to the icon to show in the systray. If the icon is not found, or if None is specified, a default system icon will be displayed. The second parameter is the hover text to show when the mouse is hovered over the systray icon. The traybar will run in its own thread, so the using script can continue to run. The icon and/or hover text can be updated using the update() method with the appropriate `hover_text` or `icon` keyword argument: ```python for item in ['item1', 'item2', 'item3']: systray.update(hover_text=item) do_something(item) ``` To destroy the icon when the program ends, call ```python systray.shutdown() ``` SysTrayIcon can be used as a context manager to start and shutdown the tray, which also prevents hung tray threads should the parent thread fail or otherwise not close the tray process: ```python with SysTrayIcon(icon, hover_text) as systray: for item in ['item1', 'item2', 'item3']: systray.update(hover_text=item) do_something(item) ``` A "Quit" command is always appended to the end of the icon context menu, after the menu options specified by the user. To perform operations when Quit is selected, pass "on_quit=callback" as a parameter, e.g.: ```python def on_quit_callback(systray): program.shutdown() systray = SysTrayIcon("icon.ico", "Example tray icon", menu_options, on_quit=on_quit_callback) ``` When the user double-clicks the systray icon, the first option specified in menu_options will be executed. The default command may be changed to a different option by setting the parameter "default_menu_index", e.g.: ```python systray = SysTrayIcon("icon.ico", "Example tray icon", menu_options, default_menu_index=2) ``` menu_options must be a list of 3-tuples. Each 3-tuple specifies a context menu options. The first value in each tuple is the context menu string. Some versions of Windows can show icons next to each option in the context menu. This icon can be specified in the second value of the tuples. If None is passed, no icon is displayed for the option. The third value is the command to execute when the context menu is selected by the user. It is possible to create sub-menus in the context menu by recursively passing a list of 3-tuple options as the third value of an option, instead of passing a callback function. e.g. ```python from infi.systray import SysTrayIcon hover_text = "SysTrayIcon Demo" def hello(sysTrayIcon): print "Hello World." def simon(sysTrayIcon): print "Hello Simon." def bye(sysTrayIcon): print 'Bye, then.' def do_nothing(sysTrayIcon): pass menu_options = (('Say Hello', "hello.ico", hello), ('Do nothing', None, do_nothing), ('A sub-menu', "submenu.ico", (('Say Hello to Simon', "simon.ico", simon), ('Do nothing', None, do_nothing), )) ) sysTrayIcon = SysTrayIcon("main.ico", hover_text, menu_options, on_quit=bye, default_menu_index=1) sysTrayIcon.start() ``` Note that in the previous examples, if no code is executed after calling systray.start(), the main thread will exit and the icon thread will continue to exist until the Quit option is selected. In order to catch keyboard interrupts, some code must be written that will call systray.shutdown when the program should quit. Using SysTrayIcon as a context manager automates the start and shutdown of the tray. This module can only be used in Windows systems, otherwise the import statement will fail. ## Credit This module is adapted from an implementation by Simon Brunning, which in turn was adapted from Mark Hammond's and demos from PyWin32. # Checking out the code To run this code from the repository for development purposes, run the following: ``` easy_install -U infi.projector projector devenv build ```
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