Problem whit PixelSearch and Array

[xscc]

Hello, I have a problem with this code:

#include <WindowsConstants.au3>
#include <StaticConstants.au3>
$coord = PixelSearch( 0, 0, 20, 300, 0xFF0000)
While 1
If Not @error Then
    MsgBox(0, "X and Y are:", $coord[0] & "," & $coord[1])
Else
    MsgBox (0, "Error", "errore")
EndIf
WEnd

When I execute this code the console display:

C:\Users\user\Desktop\autoit\Pixelsearch.au3 (6) : ==> Subscript used with non-Array variable.:
MsgBox(0, "X and Y are:", $coord[0] & "," & $coord[1])
MsgBox(0, "X and Y are:", $coord^ ERROR
>Exit code: 1    Time: 2.016

[Melba23]

xscc,

Put the $coord = PixelSearch( 0, 0, 20, 300, 0xFF0000) line inside the loop

At the moment you are only testing the error from PixelSearch on the first pass - after that you are testing the error from MsgBox, which is usually 0, while $coord is probably not an array as the PixelSearch failed.

#include <WindowsConstants.au3>
#include <StaticConstants.au3>

While 1
    $coord = PixelSearch(0, 0, 20, 300, 0xFF0000)
    If Not @error Then
        MsgBox(0, "X and Y are:", $coord[0] & "," & $coord[1])
    Else
        MsgBox(0, "Error", "errore")
    EndIf
WEnd

Now you will get successive error MsgBoxes until the pixel appears in the area.

M23