How in GUI to show the text from the file which changes?

[Fertum]

In the file 1.txt in the first line there is an inscription, and it changes over time. In the GUI, it should also be changed.How to make it not flicker?

Local $Form1 = GUICreate('Form1', 261, 200, 192, 124)
$10 = FileReadLine ( "1.txt",  1);
GUISetState()
Local $spic = $10, $Pic1
While 1
    $Pic1 = GUICtrlCreateLabel($10, 10, 70, 235, 50)
    Switch FileExists($spic)
        Case 0
            If $Pic1 Then
                GUICtrlDelete($Pic1)
                $Pic1 = 0
            EndIf
        Case 1
            If Not $Pic1 Then $Pic1 = GUICtrlCreateLabel($spic, 16, 24, 212, 124)
    EndSwitch
    Sleep(1)
WEnd

 

Edited January 23, 2019 by Fertum

[Subz]

Why not use GuiCtrlSetData and/or GuiCtrlSetState?  The flicker is because you keep creating the label over and over again in the loop.

Also if you want the label to resize according to length etc.. see Melba23 excellent StringSize udf.

 

Edited January 23, 2019 by Subz

[BrewManNH]

To prevent flickering, you should also only update the label if the contents change/need to change. This will keep flickering to a minimum by only changing it when needed, not every time through the loop.