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Re: display alert parameters
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Re: display alert parameters

  • Subject: Re: display alert parameters
  • From: Christopher Nebel <email@hidden>
  • Date: Mon, 9 Jan 2006 12:40:42 -0800

On Jan 9, 2006, at 12:34 PM, Christopher Nebel wrote:

On Jan 8, 2006, at 1:17 AM, John Mitchell wrote:

I've used all three options of the display alert ...message ...  as critical/informational/warning but I cannot see any difference between critical and informational. warning displays a yellow triangle overlaid by the application icon, but I presumed that critical would show something special

any clues? Is it documented somewhere?

Believe it or not, this is by design.  The old "stop" icon is not supposed to be used in Mac OS X -- see <http://developer.apple.com/documentation/UserExperience/Conceptual/OSXHIGuidelines/XHIGWindows/chapter_17_section_6.html>.  The "critical" setting persists for historical reasons -- namely, it was supported in Mac OS 9, and old source has to continue to compile.

Sorry, I spoke a little hastily.  Saying that this is for the benefit of Mac OS 9 source is silly, since "display alert" didn't exist then.  The real reason is that "display alert" is basically a wrapper for CreateStandardAlert (see <http://developer.apple.com/documentation/Carbon/Conceptual/HandlingWindowsControls/hitb-wind_cont_tasks/chapter_3_section_4.html>), which does indeed have all three options.  However, after the API was created, HI mandated that the "stop" icon not be used, so "critical" and "informational" wind up looking the same.  You can file a bug if you like, but it's not AppleScript's.


--Chris Nebel
AppleScript and Automator Engineering
 

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References: 
 >display alert parameters (From: John Mitchell <email@hidden>)
 >Re: display alert parameters (From: Christopher Nebel <email@hidden>)

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