BUG？msgbox(func()) is ok, msgbox(res := func()) changed

[hyaray]

RemoteTreeView_v2.ahk

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msgbox(MyTV.GetText(hItem)) ;✓
msgbox(txt := MyTV.GetText(hItem)) ;╳

I use class RemoteTreeView to get items in SysTreeView321,
set value to var, the value changed, this puzzled me a lot
I use v2 a102,
attachments is gif and ahk scripts(hotkey is F9), uses code of 280 line value changed.
Thanks very much for help!!

[_3D_]

Try this:

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mytv() => 'value'
MsgBox(mytv())
MsgBox(x:= mytv())

If problem still persist so it is BUG. Else ...
It is 1000 lines code try to isolate just this part that you use and make tests.

EDIT:
I looked text and "houses" in video - probably somewhere in code is missing buffer clear or low buffer size - so new text placed incorrect.

[hyaray]

Thanks very much!
maybe the buffer error? But I still don't know how to deal this.
My own code only 30 lines(start with F9::)
v2 has few users, will this problem be solved

[just me]

v2 is alpha, so you should try the latest version before 'reporting' bugs (though you'll find that your script will not run any more).

[aseiot]

Try to change the code in RemoteTreeView.GetText() method at line 625 from

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return txt

to

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return StrGet(&txt)