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LazyMan
PostPosted: August 18th, 2011, 7:06 pm 
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With the following code, if "Window1" and "Window2" both exist, pressing F11 will not activate Window2, but pressing F12 will activate Window2:

Code:
ActivateAndReportLastWindowFound()
{
   WinActivate
   WinGetActiveTitle Title
   MsgBox The active window title is: %Title%
}

WinActivate Window1

#If WinExist("Window2")
   F11:: ActivateAndReportLastWindowFound()
#If
#IfWinExist Window2
   F12:: ActivateAndReportLastWindowFound()
#IfWinExist

Please help me understand why #If WinExist() does not set Last Window Found.


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Barney9
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PostPosted: August 18th, 2011, 9:19 pm 
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Posts: 57
Location: Germany
the documentation says:
Quote:
Most behavioural properties of the #IfWin directives also apply to #If.

That means, not all apply. Setting Last Window Found seems to be one of those who don't apply.


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LazyMan
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PostPosted: August 18th, 2011, 9:58 pm 
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Thanks Barney9. It seems that the documentation left you guessing, too. :|


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Lexikos
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PostPosted: August 18th, 2011, 10:47 pm 
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This wasn't intentional, but a side-effect of the way quasi-threads work in AutoHotkey (and the fact that the #if expression is evaluated in its own quasi-thread). I've moved this topic to Bug Reports.


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LazyMan
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PostPosted: August 19th, 2011, 4:02 am 
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Thanks for your attention and explanation, Lexikos.

And thanks for AHK_L. :)


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Lexikos
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PostPosted: August 19th, 2011, 10:58 am 
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As a workaround, you can use #If lfw := WinExist(WinTitle). However, this won't be necessary after the next release.


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LazyMan
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PostPosted: August 19th, 2011, 3:22 pm 
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For my trivial example, your work-around works efficiently. But for a slightly more complex example, it does not (i.e. in the code below, Window1 will be reported when F12 is pressed):

Code:
ActivateAndReportLastWindowFound()
{
   WinActivate
   WinGetActiveTitle Title
   MsgBox The active window title is: %Title%
}

WinActivate Window1

AppWinExists()
{
   If ( WinExist("Window2")
     || WinExist("Window3")
     || WinExist("Window4") )
      Return True
   Else
      Return False
}

#If Ifw := AppWinExists()
   F12:: ActivateAndReportLastWindowFound()
#If

A simple but relatively inefficient work-around for this is:

Code:
#If AppWinExists()
   F12::
      AppWinExists()
      ActivateAndReportLastWindowFound()
   Return
#If

After the next release, will

Code:
#If AppWinExists()

set the last window found?

Thanks again. :D


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Lexikos
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PostPosted: August 20th, 2011, 2:53 am 
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Posts: 7503
Location: Australia
LazyMan wrote:
But for a slightly more complex example, it does not (i.e. in the code below, Window1 will be reported when F12 is pressed):
Of course it won't work if you don't actually use the variable. What were you thinking?
Code:
#if lfw := WinExist("Window1")
F12::WinActivate ahk_id %lfw%
Quote:
#If Ifw := AppWinExists()
lfw = Last Found Window, not "I" Found Window. Well, I guess that works too...
Quote:
After the next release, will #If AppWinExists() set the last window found?
Yes.


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Lexikos
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PostPosted: August 20th, 2011, 1:59 pm 
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Posts: 7503
Location: Australia
Fixed in v1.1.02.02.


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LazyMan
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PostPosted: August 22nd, 2011, 5:36 am 
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Lexikos wrote:
What were you thinking?

As I cannot reproduce the behavior which misled me to my previous post, it seems I was careless and/or particularly unlucky (probably the former). :oops: I apologize for not being more careful before posting.

In version v1.1.02.02, #If AppWinExists() behaves as I expected. Thank you! :D


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