Blocking functions in callbacks

[MWIProd]

Hi,

If I use _ArrayDisplay() in WM_NOTIFY function, windows will be blank and freeze.

I use _AdlibRegister() as an alternativ.

What is your advice ?

Best regards.

Quote

Warning: blocking of running user functions which executes window messages with commands such as "MsgBox()" can lead to unexpected behavior, the return to the system should be as fast as possible !!!

[Danyfirex]

Show us a running example.

 

 

Saludos

[Guest]

24 minutes ago, MWIProd said:

What is your advice ?

As long as the output of the array is sufficient within SciTE, you can take a look at the following UDF from @AspirinJunkie

https://github.com/Sylvan86/autoit-arrayplus-udf

There is a function that outputs formatted 1D and 2D arrays in the console.

_Array2String

print a 1D/2D-array to console or variable clearly arranged

Edited March 19, 2024 by Musashi

[Andreik]

Or you can use a dummy control. Here is an example:

expandcollapse popup

#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>

AutoItSetOption('GUIOnEventMode', 1)

$hGUI = GUICreate('Example', 400, 400, Default, Default, BitOR($WS_SYSMENU, $WS_MINIMIZEBOX))
$cLabel = GUICtrlCreateLabel('Minimize or restore the window', 10, 10, 380, 380, 0x201)
$cDummy = GUICtrlCreateDummy()
GUISetState(@SW_SHOW, $hGUI)

GUISetOnEvent($GUI_EVENT_CLOSE, 'Quit')
GUICtrlSetOnEvent($cDummy, 'ReadMsg')
GUIRegisterMsg($WM_SIZE, 'WM_SIZE')

While True
    Sleep(10)
WEnd

Func ReadMsg()
    Local $iData = GUICtrlRead($cDummy)
    Switch $iData
        Case 1
            MsgBox(0, '', 'Window has been minimized')
        Case 0
            MsgBox(0, '', 'Window has been restored')
    EndSwitch
EndFunc

Func WM_SIZE($hWnd, $iMsg, $wParam, $lParam)
    #forceref $iMsg, $lParam
    If $hWnd = $hGUI Then
        GUICtrlSendToDummy($cDummy, $wParam)
        Return True
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc

Func Quit()
    Exit
EndFunc

 

Edited March 19, 2024 by Andreik

[Melba23]

MWIProd,

Quote

What is your advice ?

Do as the Help file tells you and do not use blocking functions in a Windows message handler. We did not write that warning for fun.

M23

[argumentum]

2 hours ago, MWIProd said:

I use _AdlibRegister() as an alternativ.

Make a Global $g_iWM_NOTIFY = 0
then inside WM_NOTIFY switch to = 1
In your While loop, if $g_iWM_NOTIFY = 1 then clear the 1 and do your _ArrayDisplay()