Background not erased for label with $GUI_BKCOLOR_TRANSPARENT set

[KaFu]

Does not happen with autoit-v3.3.15.0-beta-setup.exe, first occurred with autoit-v3.3.15.1-beta-setup.exe
​https://www.autoitscript.com/forum/topic/202668-autoit-v33151-beta

Checked release notes and guess it might be related to this fix:

• Fixed: Workarounds added to alleviate slow downs on Windows 10 1809 and later (OS bug/design change).

To test comment / un-comment the GUI_BKCOLOR_TRANSPARENT line and run with prod version and current Beta. With current Beta the updated data overwrites the label with erasing to old data first.

#include <GUIConstantsEx.au3>
Opt("GUIOnEventMode", 1)

GUICreate("Test", 550, 40)
GUISetOnEvent($GUI_EVENT_CLOSE, "_Exit")

$c_Label = GUICtrlCreateLabel(TimerInit, 10, 10, 430, 20)
GUICtrlSetBkColor(-1, $GUI_BKCOLOR_TRANSPARENT) ; comment / un-comment this line

; does not happen with autoit-v3.3.15.0-beta-setup.exe, first occurred with autoit-v3.3.15.1-beta-setup.exe
; https://www.autoitscript.com/forum/topic/202668-autoit-v33151-beta
; checked release notes and guess it might be related to this fix:
; - Fixed: Workarounds added to alleviate slow downs on Windows 10 1809 and later (OS bug/design change). 

GUICtrlCreateButton('Exit', 495, 10, 50)
GUICtrlSetOnEvent(-1, "_Exit")

GUISetState()

While 1
        GUICtrlSetData($c_Label, TimerInit())
WEnd

Func _Exit()
        Exit
EndFunc   ;==>_Exit

[KaFu]

With current Beta the updated data overwrites the label without erasing to old data first.

[Jpm]

just add a Sleep(10) after the GUICtrlSetData()
I will send a fix to Jon so the sleep() will not be needed.

In fact it is not a good habit to update continously a GUI without sleeping a while to allows others processes to get some CPU time

[KaFu]

Tested with 3.3.15.5.alpha37, does not seem to be fixed there.
Regards, Karsten

[Jpm]

I agree so the only solution is to fix the doc in case od Onevent witout sleep in the loop
I will add to the doc
Thanks

[Jpm]

Added by revision [12592] in version: 3.3.15.5