开源免费无视觉桌面访问 NVDA 中文版由大眼仔（www.dayanzai.me）发布。NVDA (NonVisual Desktop Access) 是适用于 Microsoft Windows 的免费开源屏幕阅读器。 它由 NV Access 与全球贡献者社区合作开发。 借助 NVDA 等工具，视力有问题的人使用计算机不再是问题。 该程序是一个免费的解决方案，旨在充当视障人士使用计算机的通用网关，而无需太多麻烦。要了解有关 NVDA 的更多信息，请访问主要的 NV Access 网站。

NVDA 中文多语免费版

NVDA 功能特色

• NVDA 允许盲人和视力受损的人访问 Windows 操作系统和许多第三方应用程序并与之交互
• 支持流行的应用程序，包括网络浏览器、电子邮件客户端、互联网聊天程序和办公套件
• 内置语音合成器，支持 80 多种语言
• 报告可用的文本格式，例如字体名称和大小、样式和拼写错误
• 鼠标下的文本自动播报和鼠标位置的可选声音指示
• 支持许多可刷新的盲文显示器，包括自动检测其中许多盲文显示器的能力，以及带有盲文键盘的盲文显示器上的盲文输入
• 无需安装即可完全从 USB 闪存驱动器或其他便携式媒体运行
• 易于使用的通话安装程序
• 翻译成 54 种语言
• 支持现代 Windows 操作系统，包括 32 位和 64 位版本
• 能够在 Windows 登录期间和安全屏幕上运行
• 在使用触摸手势时宣布控件和文本
• 支持常见的可访问性界面，例如 Microsoft Active Accessibility、Java Access Bridge、IAccessible2 和 UI 自动化
• 支持 Windows 命令提示符和控制台应用程序
• 突出系统焦点的能力

支持语音合成器

除了提供多种语言的消息和界面外，NVDA 还可以让用户阅读任何语言的内容，只要他们有一个可以说该语言的语音合成器。

NVDA 与 eSpeak NG 捆绑在一起，这是一款免费的开源多语言语音合成器。有关 NVDA 支持的其他语音合成器的信息可以在支持的语音合成器部分找到。

盲文支持

对于拥有可刷新盲文显示器的用户，NVDA 可以将其信息输出为盲文。 还支持通过盲文键盘进行非缩略和缩略盲文输入。 此外，NVDA 默认会自动检测许多盲文显示器。 有关支持的盲文显示器的信息，请参阅支持的盲文显示器部分。

NVDA 支持多种语言的盲文代码，包括简写、非简写和计算机盲文代码。

NVDA 系统要求

• 操作系统：Windows 7、Windows 8、Windows 8.1、Windows 10、Windows 11 的所有 32 位和 64 位版本，以及从 Windows Server 2008 R2 开始的所有服务器操作系统。
• 对于 Windows 7，NVDA 需要 Service Pack 1 或更高版本。
• 对于 Windows Server 2008 R2，NVDA 需要 Service Pack 1 或更高版本。
• 至少 150 MB 的存储空间。

NVDA 许可和版权

NVDA 是版权所有 2006-2021 NVDA 贡献者。

NVDA 在 GNU 通用公共许可证版本 2 下可用，但有两个特殊例外。 例外情况在“插件和驱动程序中的非 GPL 组件”和“Microsoft 可分发代码”部分的许可文档中进行了概述。 NVDA 还包括并使用在不同的免费和开源许可下提供的组件。 您可以以任何您喜欢的方式自由共享或更改此软件，只要它附有许可证并且您将所有源代码提供给任何需要它的人。 这适用于本软件的原始副本和修改副本，以及任何衍生作品。

有关更多详细信息，您可以查看完整许可证。 有关例外的详细信息，请从“帮助”部分下的 NVDA 菜单访问许可文档。

官方主页

What’s new in NVDA 2023.1
March 27, 2023
A new option has been added, “Paragraph Style” in “Document Navigation”This can be used with text editors that do not support paragraph navigation natively, such as Notepad and Notepad++.
There is a new global command to report the destination of a link, mapped to NVDA+k.
Support for annotated web content (such as comments and footnotes) has improvedPress NVDA+d to cycle through summaries when annotations are reported (e.g”has comment, has footnote”).
Tivomatic Caiku Albatross 46/80 braille displays are now supported.
Support for ARM64 and AMD64 versions of Windows has improved.
There are many bug fixes, notably Windows 11 fixes.
eSpeak, LibLouis, Sonic rate boost and Unicode CLDR have been updatedThere are new Georgian, Swahili (Kenya) and Chichewa (Malawi) braille tables.
Note:
This release breaks compatibility with existing add-ons
New Features:
Microsoft Excel via UI Automation: Automatic reporting of column and row headers in tables(#14228)
Note: This is referring to tables formatted via the “Table” button on the Insert pane of the Ribbon”First Column” and “Header Row” in “Table Style Options” correspond to column and row headers respectively.
This is not referring to screen reader specific headers via named ranges, which is currently not supported via UI Automation
An unassigned script has been added to toggle delayed character descriptions(#14267)
Added an experimental option to leverage the UIA notification support in Windows Terminal to report new or changed text in the terminal, resulting in improved stability and responsivity(#13781)
Consult the user guide for limitations of this experimental option
On Windows 11 ARM64, browse mode is now available in AMD64 apps such as Firefox, Google Chrome and 1Password(#14397)
A new option has been added, “Paragraph Style” in “Document Navigation”This adds support for single line break (normal) and multi line break (block) paragraph navigationThis can be used with text editors that do not support paragraph navigation natively, such as Notepad and Notepad++(#13797)
The presence of multiple annotations are now reportedNVDA+d now cycles through reporting the summary of each annotation target for origins with multiple annotation targetsFor example, when text has a comment and a footnote associated with it(#14507, #14480)
Added support for Tivomatic Caiku Albatross 46/80 braille displays(#13045)
New global command: Report link destination (NVDA+k)Pressed once will speak/braille the destination of the link that is in the navigator objectPressing twice will show it in a window, for more detailed review(#14583)
New unmapped global command (Tools category): Report link destination in a windowSame as pressing NVDA+k twice, but may be more useful for braille users(#14583)
Changes:
Updated LibLouis braille translator to 3.24.0(#14436)
Major updates to Hungarian, UEB, and Chinese bopomofo braille.
Support for the Danish braille standard 2022.
New braille tables for Georgian literary braille, Swahili (Kenya) and Chichewa (Malawi)
Updated Sonic rate boost library to commit 1d70513(#14180)
CLDR has been updated to version 42.0(#14273)
eSpeak NG has been updated to 1.52-dev commit f520fecb(#14281, #14675)
Fixed reporting of large numbers(#14241)
Java applications with controls using the selectable state will now announce when an item is not selected rather than when the item is selected(#14336)
Bug Fixes:
Windows 11 fixes:
NVDA will announce search highlights when opening Start menu(#13841)
On ARM, x64 apps are no longer identified as ARM64 applications(#14403)
Clipboard history menu items such as “pin item” can be accessed(#14508)
In Windows 11 22H2 and newer, it is again possible to use mouse and touch interaction to interact with areas such as the system tray overflow window and “Open With” dialog(#14538, #14539)
Suggestions are reported when typing an @mention in in Microsoft Excel comments(#13764)
In the Google Chrome location bar, suggestion controls (switch to tab, remove suggestion etc) are now reported when selected(#13522)
When requesting formatting information, colors are now explicitly reported in Wordpad or log viewer, rather than only “Default color”(#13959)
In Firefox, activating the “Show options” button on GitHub issue pages now works reliably(#14269)
The date picker controls in Outlook 2016 / 365 Advanced search dialog now report their label and value(#12726)
ARIA switch controls are now actually reported as switches in Firefox, Chrome and Edge, rather than checkboxes(#11310)
NVDA will automatically announce the sort state on an HTML table column header when changed by pressing an inner button(#10890)
A landmark or region’s name is always automatically spoken when jumping inside from outside using quick navigation or focus in browse mode(#13307)
When beep or announce ‘cap’ for capitals is enabled with delayed character descriptions, NVDA no longer beeps or announces ‘cap’ twice(#14239)
Controls in tables in Java applications will now be announced more accurately by NVDA(#14347)
Some settings will no longer be unexpectedly different when used with multiple profiles(#14170)
The following settings have been addressed:
Line indentation in Document formatting settings.
Cell borders in doc formatting settings
Show messages in braille settings
Tether Braille in braille settings
In some rare cases, these settings used in profiles may be unexpectedly modified when installing this version of NVDA.
Please check these options in your profiles after upgrading NVDA to this version
Emojis should now be reported in more languages(#14433)
The presence of an annotation is no longer missing in braille for some elements(#13815)
Fixed an issue where config changes not save correctly when changing between a “Default” option and the value of the “Default” option(#14133)
When configuring NVDA there will always be at least one key defined as an NVDA key(#14527)
When accessing the NVDA menu via the notification area, NVDA will not suggest a pending update anymore when no update is available(#14523)
Remaining, elapsed and total time is now reported correctly for audio files over a day long in foobar2000(#14127)
In web browsers such as Chrome and Firefox, alerts such as file downloads are shown in braille in addition to being spoken(#14562)
Bug fixed when navigating to the first and last column in a table in Firefox (#14554)
When NVDA is launched with –lang=Windows parameter, it is again possible to open NVDA’s General settings dialog(#14407)
NVDA no longer fails to continue reading in Kindle for PC after turning the page(#14390)
Changes for Developers:
Note: this is an Add-on API compatibility breaking releaseAdd-ons will need to be re-tested and have their manifest updatedPlease refer to the developer guide for information on NVDA’s API deprecation and removal process.
System tests should now pass when run locally on non-English systems(#13362)
In Windows 11 on ARM, x64 apps are no longer identified as ARM64 applications(#14403)
It is no longer necessary to use SearchField and SuggestionListItem UIA NVDAObjects in new UI Automation scenarios, where automatic reporting of search suggestions, and where typing has been exposed via UI Automation with the controllerFor patternThis functionality is now available generically via behaviours.EditableText and the base NVDAObject respectively(#14222)
The UIA debug logging category when enabled now produces significantly more logging for UIA event handlers and utilities(#14256)
NVDAHelper build standards updated(#13072)
Now uses the C++20 standard, was C++17.
Now uses the /permissive- compiler flag which disables permissive behaviors, and sets the /Zc compiler options for strict conformance
Some plugin objects (e.gdrivers and add-ons) now have a more informative description in the NVDA python console(#14463)
NVDA can now be fully compiled with Visual Studio 2022, no longer requiring the Visual Studio 2019 build tools(#14326)
More detailed logging for NVDA freezes to aid debugging(#14309)
The singleton braille._BgThread class has been replaced with hwIo.ioThread.IoThread(#14130)
A single instance hwIo.bgThread (in NVDA core) of this class provides background i/o for thread safe braille display drivers.
This new class is not a singleton by design, add-on authors are encouraged to use their own instance when doing hardware i/o
The processor architecture for the computer can be queried from winVersion.WinVersion.processorArchitecture attribute(#14439)
New extension points have been added(#14503)
inputCore.decide_executeGesture
tones.decide_beep
nvwave.decide_playWaveFile
braille.pre_writeCells
braille.filter_displaySize
braille.decide_enabled
braille.displayChanged
braille.displaySizeChanged
It is possible to set useConfig to False on supported settings for a synthesizer driver(#14601)
API Breaking Changes:
These are breaking API changesPlease open a GitHub issue if your Add-on has an issue with updating to the new API.
The configuration specification has been altered, keys have been removed or modified:
In [documentFormatting] section (#14233):
reportLineIndentation stores an int value (0 to 3) instead of a boolean
reportLineIndentationWithTones has been removed.
reportBorderStyle and reportBorderColor have been removed and are replaced by reportCellBorders
In [braille] section (#14233):
noMessageTimeout has been removed, replaced by a value for showMessages.
messageTimeout cannot take the value 0 anymore, replaced by a value for showMessages.
autoTether has been removed; tetherTo can now take the value “auto” instead
In [keyboard] section (#14528):
useCapsLockAsNVDAModifierKey, useNumpadInsertAsNVDAModifierKey, useExtendedInsertAsNVDAModifierKey have been removedThey are replaced by NVDAModifierKeys
The NVDAHelper.RemoteLoader64 class has been removed with no replacement(#14449)
The following functions in winAPI.sessionTracking are removed with no replacement(#14416, #14490)
isWindowsLocked
handleSessionChange
unregister
register
isLockStateSuccessfullyTracked
It is no longer possible to enable/disable the braille handler by setting braille.handler.enabledTo disable the braille handler programatically, register a handler to braille.handler.decide_enabled(#14503)
It is no longer possible to update the display size of the handler by setting braille.handler.displaySizeTo update the displaySize programatically, register a handler to braille.handler.filter_displaySizeRefer to brailleViewer for an example on how to do this(#14503)
There have been changes to the usage of addonHandler.Addon.loadModule(#14481)
loadModule now expects dot as a separator, rather than backslashFor example “lib.example” instead of “libexample”.
loadModule now raises an exception when a module can’t be loaded or has errors, instead of silently returning None without giving information about the cause
The following symbols have been removed from appModules.foobar2000 with no direct replacement(#14570)
statusBarTimes
parseIntervalToTimestamp
getOutputFormat
getParsingFormat
The following are no longer singletons – their get method has been removedUsage of Example.get() is now Example()(#14248)
UIAHandler.customAnnotations.CustomAnnotationTypesCommon
UIAHandler.customProps.CustomPropertiesCommon
NVDAObjects.UIA.excel.ExcelCustomProperties
NVDAObjects.UIA.excel.ExcelCustomAnnotationTypes
Deprecations:
NVDAObjects.UIA.winConsoleUIA.WinTerminalUIA is deprecated and usage is discouraged(#14047)
config.addConfigDirsToPythonPackagePath has been movedUse addonHandler.packaging.addDirsToPythonPackagePath instead(#14350)
braille.BrailleHandler.TETHER_* are deprecatedUse configFlags.TetherTo.*.value instead(#14233)
utils.security.postSessionLockStateChanged is deprecatedUse utils.security.post_sessionLockStateChanged instead(#14486)
NVDAObject.hasDetails, NVDAObject.detailsSummary, NVDAObject.detailsRole has been deprecatedUse NVDAObject.annotations instead(#14507)
keyboardHandler.SUPPORTED_NVDA_MODIFIER_KEYS is deprecated with no direct replacementConsider using the class config.configFlags.NVDAKey instead(#14528)
gui.MainFrame.evaluateUpdatePendingUpdateMenuItemCommand has been deprecatedUse gui.MainFrame.SysTrayIcon.evaluateUpdatePendingUpdateMenuItemCommand instead(#14523)

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