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WinGet, Transparent problem

 
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antonyb



Joined: 26 May 2004
Posts: 61
PostPosted: Tue Oct 11, 2005 11:51 am    Post subject: WinGet, Transparent problem Reply with quote
Hello,

Can anyone else confirm that the following script doesn't behave as you'd expect?

Code:
Run, notepad.exe
sleep 2000
WinGet, id, ID, Untitled - Notepad
FileAppend, hwnd: %id%`n, *
WinGet, t1, Transparent, ahk_id %id%
FileAppend, Initial transparency: %t1%`n, *
FileAppend, Setting transparency to 100...`n, *
WinSet, Transparent, 100, ahk_id %id%
WinGet, t2, Transparent, ahk_id %id%
FileAppend, Current Transparency: %t2%`n, *
FileAppend, Minimizing...`n, *
WinMinimize, ahk_id %id%
sleep 2000
WinGet, t3, Transparent, ahk_id %id%
FileAppend, Transparency while minimized: %t3%`n, *
FileAppend, Restoring...`n, *
WinRestore, ahk_id %id%
WinGet, t4, Transparent, ahk_id %id%
FileAppend, Current Transparency: %t4%`n, *


n.b. it writes out to the console, so run it from a dos box.

Ant.
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Chris
Site Admin


Joined: 02 Mar 2004
Posts: 10467
PostPosted: Tue Oct 11, 2005 10:41 pm    Post subject: Reply with quote
Thanks for the report. It appears that "WinGet Transparent" fails due to the call to OS function GetLayeredWindowAttributes() indicating a failure.

GetLayeredWindowAttributes() indicates that one of its incoming parameters is incorrect. But since I've verified that all the parameters passed to it are valid, this is either an OS bug or a failure condition that is undocumented at MSDN.

I will document it in the help file as a known limitation.

Thanks for reporting it.
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antonyb



Joined: 26 May 2004
Posts: 61
PostPosted: Wed Oct 12, 2005 9:36 am    Post subject: Reply with quote
Ok, thanks Chris.

Looks like the problem arises whenever a window is resized - I can reproduce it with WinMove too.

Ant.

Edit:

Incidently, googling found me this. However I've tried toggling WS_EX_LAYERED on and off:

Code:
WinGet, xs, ExStyle, ahk_id %id%

if (xs & 0x00080000) ; 0x00080000 is WS_EX_LAYERED
{
  WinSet, ExStyle, -0x00080000, ahk_id %id%
  WinSet, ExStyle, +0x00080000, ahk_id %id%
}


but this just seems to make the window disappear completely!
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