Re: Import Snapshot in iOS
Is there a bug report for this? On 15.05.2013, at 06:47, Mark Wilcox wrote: Yes, the code I looked at definitely took a rect and not an object. I suspect the new method is not taking a snapshot of the screen at all but rendering the object into an image. Wouldn't using the new method and asking for the current card work for most scenarios? Presumably if you want a subset of the screen after that you can crop part of the image? Richard Gaskin ambassa...@fourthworld.com wrote: I recently stumbled across this post by Ender Nafi which confirm my hunch that it's only the older import from rect option that fails, and the newer import from object seems to work well: http://forums.runrev.com/viewtopic.php?f=49t=15093#p75531 -- Richard Gaskin Fourth World Systems Software Design and Development for Desktop, Mobile, and Web ambassa...@fourthworld.comhttp://www.FourthWorld.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode -- Use an alternative Dictionary viewer: http://bjoernke.com/bvgdocu/ Chat with other RunRev developers: http://bjoernke.com/chatrev/ ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
RE: Import Snapshot in iOS
Ender...
There is not a problem with importing a snapshot from a rectangle !.. and it
doesn't matter is acceleratedRendering is true or false.. or has even left the
room ..:-)
Date: Wed, 15 May 2013 03:13:59 +0300
From: endern...@gmail.com
To: use-livecode@lists.runrev.com
Subject: Re: Import Snapshot in iOS
Yepp :)
*import from object* works fine.
The problem is *import from rect* notation.
@Roger,
for now the only solution seems this piece of code:
_set the acceleratedRendering of this stack to false
_import snapshot from rect tRect
_set the acceleratedRendering of this stack to true
My sample stack in the forum post works without a glitch with this update.
So, the code in that stack does 3 things:
* Prohibits the black snapshot {turning off the a-R temporarily}
* Prohibits the transparent blank snapshot {excluding the iPhone status bar}
* Places the final snapshot into the visible portion of the screen
Best,
~ Ender Nafi
~… together, we're smarter …~
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RE: Import Snapshot in iOS
Is everyone using the same versions of LiveCode and iOS? The code in GitHub
looks like it won't successfully capture a rectangle from an accelerated
screen on any recent iOS version.
John Dixon dixo...@hotmail.co.uk wrote:
Ender...
There is not a problem with importing a snapshot from a rectangle !.. and it
doesn't matter is acceleratedRendering is true or false.. or has even left the
room ..:-)
Date: Wed, 15 May 2013 03:13:59 +0300
From: endern...@gmail.com
To: use-livecode@lists.runrev.com
Subject: Re: Import Snapshot in iOS
Yepp :)
*import from object* works fine.
The problem is *import from rect* notation.
@Roger,
for now the only solution seems this piece of code:
_set the acceleratedRendering of this stack to false
_import snapshot from rect tRect
_set the acceleratedRendering of this stack to true
My sample stack in the forum post works without a glitch with this update.
So, the code in that stack does 3 things:
* Prohibits the black snapshot {turning off the a-R temporarily}
* Prohibits the transparent blank snapshot {excluding the iPhone status bar}
* Places the final snapshot into the visible portion of the screen
Best,
~ Ender Nafi
~… together, we're smarter …~
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Re: Import Snapshot in iOS
Mark Wilcox wrote: Yes, the code I looked at definitely took a rect and not an object. I suspect the new method is not taking a snapshot of the screen at all but rendering the object into an image. Wouldn't using the new method and asking for the current card work for most scenarios? I would imagine so. In my understanding, the newer from object option does indeed work as you described, which is why I guessed it might be helpful in cases where the from rect option doesn't work. I think Björnke's suggestion that this be reported as a bug is valid, since it's probably possible to change the buffer from which the from rect image data is obtained, from what I presume is the rendered card buffer to the final OS-rendered screen buffer instead. This may be slightly more difficult on non-mobile systems, since the card buffer will be using different coordinates from the screen buffer, but even then those coords should be translatable. In fact, this may help us understand why John's results are so different: There is not a problem with importing a snapshot from a rectangle !.. and it doesn't matter is acceleratedRendering is true or false.. or has even left the room ..:-) I wonder if successful uses of from rect are using global coordinates, while unsuccessful ones are using local coordinates. If this is true, I'd still consider it a bug but at least it becomes somewhat understandable, in that perhaps local coords pull from the card buffer (which is in tiles with acceleratedRendering turned on) while global coords perhaps pull from the final composited screen buffer. That's just a wild guess, though. But since John's seeing good results while others are seeing blank images, there must be some difference somewhere. Perhaps we should note engine version numbers with results as this discussion continues? It may be that ongoing enhancements to the rendering subsystem introduced a change in a relatively recent version which is the cause of this. -- Richard Gaskin Fourth World LiveCode training and consulting: http://www.fourthworld.com Webzine for LiveCode developers: http://www.LiveCodeJournal.com Follow me on Twitter: http://twitter.com/FourthWorldSys ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
RE: Import Snapshot in iOS
Yes, I asked about this and according to RR import from rect hasn't been
implemented in iOS for some technical reasons. But you can import snapshot
from rect of this card and it should work.
Mark Wilcox m_p_wil...@yahoo.co.uk wrote:
Is everyone using the same versions of LiveCode and iOS? The code in
GitHub looks like it won't successfully capture a rectangle from an
accelerated screen on any recent iOS version.
John Dixon dixo...@hotmail.co.uk wrote:
Ender...
There is not a problem with importing a snapshot from a rectangle !..
and it doesn't matter is acceleratedRendering is true or false.. or has
even left the room ..:-)
Date: Wed, 15 May 2013 03:13:59 +0300
From: endern...@gmail.com
To: use-livecode@lists.runrev.com
Subject: Re: Import Snapshot in iOS
Yepp :)
*import from object* works fine.
The problem is *import from rect* notation.
@Roger,
for now the only solution seems this piece of code:
_set the acceleratedRendering of this stack to false
_import snapshot from rect tRect
_set the acceleratedRendering of this stack to true
My sample stack in the forum post works without a glitch with this
update.
So, the code in that stack does 3 things:
* Prohibits the black snapshot {turning off the a-R temporarily}
* Prohibits the transparent blank snapshot {excluding the iPhone
status bar}
* Places the final snapshot into the visible portion of the screen
Best,
~ Ender Nafi
~… together, we're smarter …~
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HyperActive Software | http://www.hyperactivesw.com
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RE: Import Snapshot in iOS
Roger... I use 'import snapshot' on an app in the iTunes store... acceleratedRendering is true. I am not have had any problems.. Dixie Subject: Import Snapshot in iOS From: i...@mac.com Date: Tue, 14 May 2013 05:25:34 -0700 To: use-livecode@lists.runrev.com Hi, I've discovered that Import Snapshot does not work in iOS if acceleratedRendering is set to true. Works fine in OS X but not iOS. Any thoughts? Thanks, Roger ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
Hadn't tried it with acceleratedRendering true. a-r can be turned off at will so it shouldn't be too much of a problem but if it's a bug and not a 'feature' should let RR know about it. -- Tom McGrath III http://lazyriver.on-rev.com mcgra...@mac.com On May 14, 2013, at 8:25 AM, Roger Guay i...@mac.com wrote: Hi, I've discovered that Import Snapshot does not work in iOS if acceleratedRendering is set to true. Works fine in OS X but not iOS. Any thoughts? Thanks, Roger ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
RE: Import Snapshot in iOS
Import snapshot works regardless of the setting of acceleratedRendering ... so, it's not a 'bug' or a 'feature'... it just does what is says on the tin... Subject: Re: Import Snapshot in iOS From: mcgra...@mac.com Date: Tue, 14 May 2013 08:57:11 -0400 To: use-livecode@lists.runrev.com Hadn't tried it with acceleratedRendering true. a-r can be turned off at will so it shouldn't be too much of a problem but if it's a bug and not a 'feature' should let RR know about it. -- Tom McGrath III http://lazyriver.on-rev.com mcgra...@mac.com On May 14, 2013, at 8:25 AM, Roger Guay i...@mac.com wrote: Hi, I've discovered that Import Snapshot does not work in iOS if acceleratedRendering is set to true. Works fine in OS X but not iOS. Any thoughts? Thanks, Roger ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
No doubt, you're correct John. But, in my case, acceleratedRendering is the one line of code that results in snapshot not working in iOS. I've tried moving it from openStack to preopenStack to no avail. Can you think of any reason why this might be? Thanks, Roger On May 14, 2013, at 7:41 AM, John Dixon dixo...@hotmail.co.uk wrote: Import snapshot works regardless of the setting of acceleratedRendering ... so, it's not a 'bug' or a 'feature'... it just does what is says on the tin... Subject: Re: Import Snapshot in iOS From: mcgra...@mac.com Date: Tue, 14 May 2013 08:57:11 -0400 To: use-livecode@lists.runrev.com Hadn't tried it with acceleratedRendering true. a-r can be turned off at will so it shouldn't be too much of a problem but if it's a bug and not a 'feature' should let RR know about it. -- Tom McGrath III http://lazyriver.on-rev.com mcgra...@mac.com On May 14, 2013, at 8:25 AM, Roger Guay i...@mac.com wrote: Hi, I've discovered that Import Snapshot does not work in iOS if acceleratedRendering is set to true. Works fine in OS X but not iOS. Any thoughts? Thanks, Roger ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
I just tried it on a stack that Ender provided and again, found that snapshot does not work in iOS if acceleratedRendering is set true on openStack. BTW, I'm using LC 5.5.4. Roger On May 14, 2013, at 9:16 AM, Roger Guay i...@mac.com wrote: No doubt, you're correct John. But, in my case, acceleratedRendering is the one line of code that results in snapshot not working in iOS. I've tried moving it from openStack to preopenStack to no avail. Can you think of any reason why this might be? Thanks, Roger On May 14, 2013, at 7:41 AM, John Dixon dixo...@hotmail.co.uk wrote: Import snapshot works regardless of the setting of acceleratedRendering ... so, it's not a 'bug' or a 'feature'... it just does what is says on the tin... Subject: Re: Import Snapshot in iOS From: mcgra...@mac.com Date: Tue, 14 May 2013 08:57:11 -0400 To: use-livecode@lists.runrev.com Hadn't tried it with acceleratedRendering true. a-r can be turned off at will so it shouldn't be too much of a problem but if it's a bug and not a 'feature' should let RR know about it. -- Tom McGrath III http://lazyriver.on-rev.com mcgra...@mac.com On May 14, 2013, at 8:25 AM, Roger Guay i...@mac.com wrote: Hi, I've discovered that Import Snapshot does not work in iOS if acceleratedRendering is set to true. Works fine in OS X but not iOS. Any thoughts? Thanks, Roger ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
Roger's right. It's an odd thing but setting the a-R to true prohibits importing snapshots. Commenting it out fixes the issue. Not tested in LiveCode 6.0.1, though… ~ Ender Nafi ~… together, we're smarter …~ ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
Ender Nafi wrote: Roger's right. It's an odd thing but setting the a-R to true prohibits importing snapshots. Commenting it out fixes the issue. Not tested in LiveCode 6.0.1, though… That's not mentioned in the Dictionary. Is that a documentation bug, or does it only affect the older method of importing snapshots by rect while still allowing the new method of making snapshots from object references? -- Richard Gaskin Fourth World LiveCode training and consulting: http://www.fourthworld.com Webzine for LiveCode developers: http://www.LiveCodeJournal.com Follow me on Twitter: http://twitter.com/FourthWorldSys ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
Richard, I presume you were asking anyone on the list. I, for one, do not know! Roger On May 14, 2013, at 9:37 AM, Richard Gaskin ambassa...@fourthworld.com wrote: Ender Nafi wrote: Roger's right. It's an odd thing but setting the a-R to true prohibits importing snapshots. Commenting it out fixes the issue. Not tested in LiveCode 6.0.1, though… That's not mentioned in the Dictionary. Is that a documentation bug, or does it only affect the older method of importing snapshots by rect while still allowing the new method of making snapshots from object references? -- Richard Gaskin Fourth World LiveCode training and consulting: http://www.fourthworld.com Webzine for LiveCode developers: http://www.LiveCodeJournal.com Follow me on Twitter: http://twitter.com/FourthWorldSys ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
I looked up the iOS snapshot code. It looks to me as if it renders the contents of the window into a bitmap context. I've written my own screen snapshot and video recording code on iOS and this doesn't capture the contents of a view/window drawn directly with OpenGL - for that you need to read back the pixels from the hardware graphics accelerator directly. So if my understanding of accelerated rendering is correct, then this shouldn't work - if LiveCode didn't block you making the call in that mode, you should get back a black image. I'm hoping to find out how to trace my way down from a command to the code that implements it in a workshop on Thursday. Curious to look at this one some more when I understand the code better. Mark From: Roger Guay i...@mac.com To: How to use LiveCode use-livecode@lists.runrev.com Sent: Tuesday, 14 May 2013, 19:59 Subject: Re: Import Snapshot in iOS Richard, I presume you were asking anyone on the list. I, for one, do not know! Roger On May 14, 2013, at 9:37 AM, Richard Gaskin ambassa...@fourthworld.com wrote: Ender Nafi wrote: Roger's right. It's an odd thing but setting the a-R to true prohibits importing snapshots. Commenting it out fixes the issue. Not tested in LiveCode 6.0.1, though… That's not mentioned in the Dictionary. Is that a documentation bug, or does it only affect the older method of importing snapshots by rect while still allowing the new method of making snapshots from object references? -- Richard Gaskin Fourth World LiveCode training and consulting: http://www.fourthworld.com Webzine for LiveCode developers: http://www.LiveCodeJournal.com Follow me on Twitter: http://twitter.com/FourthWorldSys ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
I am always amazed at the talent on this list! Indeed, I am getting a black image if I set a-R true. OTH, John Dixon's stack works! What's up with that? Roger On May 14, 2013, at 1:13 PM, Mark Wilcox m_p_wil...@yahoo.co.uk wrote: I looked up the iOS snapshot code. It looks to me as if it renders the contents of the window into a bitmap context. I've written my own screen snapshot and video recording code on iOS and this doesn't capture the contents of a view/window drawn directly with OpenGL - for that you need to read back the pixels from the hardware graphics accelerator directly. So if my understanding of accelerated rendering is correct, then this shouldn't work - if LiveCode didn't block you making the call in that mode, you should get back a black image. I'm hoping to find out how to trace my way down from a command to the code that implements it in a workshop on Thursday. Curious to look at this one some more when I understand the code better. Mark From: Roger Guay i...@mac.com To: How to use LiveCode use-livecode@lists.runrev.com Sent: Tuesday, 14 May 2013, 19:59 Subject: Re: Import Snapshot in iOS Richard, I presume you were asking anyone on the list. I, for one, do not know! Roger On May 14, 2013, at 9:37 AM, Richard Gaskin ambassa...@fourthworld.com wrote: Ender Nafi wrote: Roger's right. It's an odd thing but setting the a-R to true prohibits importing snapshots. Commenting it out fixes the issue. Not tested in LiveCode 6.0.1, though… That's not mentioned in the Dictionary. Is that a documentation bug, or does it only affect the older method of importing snapshots by rect while still allowing the new method of making snapshots from object references? -- Richard Gaskin Fourth World LiveCode training and consulting: http://www.fourthworld.com Webzine for LiveCode developers: http://www.LiveCodeJournal.com Follow me on Twitter: http://twitter.com/FourthWorldSys ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
I recently stumbled across this post by Ender Nafi which confirm my hunch that it's only the older import from rect option that fails, and the newer import from object seems to work well: http://forums.runrev.com/viewtopic.php?f=49t=15093#p75531 -- Richard Gaskin Fourth World Systems Software Design and Development for Desktop, Mobile, and Web ambassa...@fourthworld.comhttp://www.FourthWorld.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Import Snapshot in iOS
Yepp :)
*import from object* works fine.
The problem is *import from rect* notation.
@Roger,
for now the only solution seems this piece of code:
_set the acceleratedRendering of this stack to false
_import snapshot from rect tRect
_set the acceleratedRendering of this stack to true
My sample stack in the forum post works without a glitch with this update.
So, the code in that stack does 3 things:
* Prohibits the black snapshot {turning off the a-R temporarily}
* Prohibits the transparent blank snapshot {excluding the iPhone status bar}
* Places the final snapshot into the visible portion of the screen
Best,
~ Ender Nafi
~… together, we're smarter …~
___
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Re: Import Snapshot in iOS
Very clever, Ender. Thanks!
On May 14, 2013, at 5:13 PM, Ender Nafi Elekçioğlu endern...@gmail.com wrote:
Yepp :)
*import from object* works fine.
The problem is *import from rect* notation.
@Roger,
for now the only solution seems this piece of code:
_set the acceleratedRendering of this stack to false
_import snapshot from rect tRect
_set the acceleratedRendering of this stack to true
My sample stack in the forum post works without a glitch with this update.
So, the code in that stack does 3 things:
* Prohibits the black snapshot {turning off the a-R temporarily}
* Prohibits the transparent blank snapshot {excluding the iPhone status bar}
* Places the final snapshot into the visible portion of the screen
Best,
~ Ender Nafi
~… together, we're smarter …~
___
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Re: Import Snapshot in iOS
Yes, the code I looked at definitely took a rect and not an object. I suspect the new method is not taking a snapshot of the screen at all but rendering the object into an image. Wouldn't using the new method and asking for the current card work for most scenarios? Presumably if you want a subset of the screen after that you can crop part of the image? Richard Gaskin ambassa...@fourthworld.com wrote: I recently stumbled across this post by Ender Nafi which confirm my hunch that it's only the older import from rect option that fails, and the newer import from object seems to work well: http://forums.runrev.com/viewtopic.php?f=49t=15093#p75531 -- Richard Gaskin Fourth World Systems Software Design and Development for Desktop, Mobile, and Web ambassa...@fourthworld.comhttp://www.FourthWorld.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
