aaron.txt

Ajax 框架,可以用来做数型菜单或者联动下拉列表

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Date: Tue, 21 Feb 2006 08:27:43 -0500
From: Aaron Smith <[e-mail]>
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Organization: GW Micro, Inc.
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To: Joe Walker <[e-mail]>, Mike Lawler <[e-mail]>, 
 Bill Herzler <[e-mail]>,
 Doug Geoffray <[e-mail]>
Subject: Re: Window-Eyes and Ajax
References: <[e-mail]> <[e-mail]> <[e-mail]> <[e-mail]> <[e-mail]>
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Joe,

Take a look at http://gwmicro.com/Developers/Software/. The section 
titled, "Working with Window-Eyes" should provide you with all you need. 
If not, please let me know, and I'll try to get you some more information.

Unfortunately, with Internet Explorer (even using our API), there's no 
way to tell Window-Eyes to reload the browse mode buffer. That feature 
only exists in Firefox. I will, however, get the information on how to 
do that and get it to you ASAP.

The safe for scripting stuff will ship in the next version of 
Window-Eyes, and will be installed automagically. In the meantime, I've 
attached our signed DLL, and a registry file that will mark the DLL safe 
for scripting when run. If you already have Window-Eyes installed, just 
replace the gwspeak.dll with the signed one, and Window-Eyes will 
re-register it when launched. If you do not have Window-Eyes installed, 
you can do the following in either a command prompt, or the run dialog 
in the start menu:

regsvr32 c:\some_folder\gwspeak.dll

Ideally, you'll have Window-Eyes installed (demo, retail, or 60-day 
eval), as that will make the whole registering process easier, and will 
allow you to test the projects you're working on. Once the DLL is 
registered, run the safe_gwspeak.reg, and say "Yes" to the prompt. This 
will add the appropriate safe-for-scripting registry keys, and will get 
rid of that annoying ActiveX warning when using GWSpeak.

Please let me know if there's anything else I can do to help.

Aaron

Joe Walker wrote:
> 
> That's fantastic - I was expecting that the default answer would be 
> along the lines of CTRL+SHIFT+A, but really hoping that there was 
> something more we could do.
> I'd like to add the code to DWR to support both FF and IE to make them 
> indicate to that an area has changed. Do you have any documentation for 
> your ActiveX control? and how far off is the safe-for-scripting version?
> 
> Thanks,
> 
> Joe.
> 
> Aaron Smith wrote:
>> Joe,
>>
>> Dynamic content is a ugly fish in the world of screen readers.
>>
>> Internet Explorer, for example, doesn't give us any indication that 
>> anything has changed on the page when something dynamic happens. The 
>> user could reload the browse mode buffer with CTRL-SHIFT-A, and the 
>> new information would be available, but they're going to be placed 
>> back at the top of the page, and not where the dynamic stuff happened. 
>> The only other solution would be to use the Window-Eyes API to 
>> communicate directly with Window-Eyes, and make it speak what you 
>> want. The only drawback to that feature (currently) is that you'll get 
>> an ActiveX warning when you try. This will be resolved in the next 
>> version of Window-Eyes when our DLL will be both signed, and marked 
>> "safe for scripting."
>>
>> Firefox, on the other hand, does offer accessible support for DHTML 
>> (http://www.mozilla.org/access/dhtml/), and Window-Eyes is currently 
>> the only screen reader to support Accessible DHTML through the Mozilla 
>> Firefox model. Firefox also offers (I believe) the ability to indicate 
>> to Window-Eyes that the page has changed. I can get more information 
>> on that for you if you need it.
>>
>> Let me know if you have any more questions.
>>
>> Aaron
>>
>> Joe Walker wrote:
>>>
>>> A fairly simple example is:
>>>  http://getahead.ltd.uk/dwr/examples/table
>>>
>>> We've just announced a beta release of DWR so the web-server is 
>>> taking a real hammering at the moment, so could be a bit slow.
>>>
>>> Thanks,
>>>
>>> Joe.
>>>
>>> Aaron Smith wrote:
>>>> Joe,
>>>>
>>>> Do you have some specific examples that we can play with to give you 
>>>> feedback?
>>>>
>>>> Thanks,
>>>>
>>>> Aaron
>>>>
>>>> Joe Walker wrote:
>>>>> Hi,
>>>>>
>>>>> I'm a running a team that is creating tools to help developers 
>>>>> write Ajax websites. The nature of Ajax websites can create 
>>>>> problems for screen readers so I would like to understand what we 
>>>>> can do to help your software read sites created by our tools so 
>>>>> that we can recommend Window-Eyes to our users.
>>>>>
>>>>> Specifically I'm interested in how pages that change over time 
>>>>> through the use of Javascript can indicate that new content is 
>>>>> available.
>>>>>
>>>>> Thanks for your time.
>>>>>
>>>>> Joe.
>>>>>
>>>>
>>>
>>
> 

-- 
To insure that you receive proper support, please include all past
correspondence (where applicable), and any relevant information
pertinent to your situation when submitting a problem report to the GW
Micro Technical Support Team.

Aaron Smith
GW Micro
Phone: [phone]
Fax: [phone]
WWW: http://www.gwmicro.com
FTP: ftp://ftp.gwmicro.com
Technical Support & Web Development

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