Array going out of bounds while checking for new processes

[maestro1024]

Hello,

I am trying to see if a new process started which works most of the time. But sometimes there is an error "Array variable has incorrect number of subscripts or subscript dimension range exceeded."

I suspect a new process started and caused an issue here but I am not sure (am I using autoit arrays incorrectly?). Anyone see an issue with this?

CODE

; check to see if list of running processes are different

Func TestForChangedProcesses()

$currentProcesses=ProcessList()

For $i=1 To $currentProcesses[0][0]-1

If Not($currentProcesses[$i][0] == $list[$i][0]) Then ; check to see if saved processes are different

LogToFile("Application changed " & $currentProcesses[$i][0])

$list=$currentProcesses ; because processes changed set new list to be the one to test against

EndIf

next

EndFunc

Edited April 7, 2008 by maestro1024

[DarkMatter]

Hello,

I am trying to see if a new process started which works most of the time. But sometimes there is an error "Array variable has incorrect number of subscripts or subscript dimension range exceeded."

I suspect a new process started and caused an issue here but I am not sure (am I using autoit arrays incorrectly?). Anyone see an issue with this?

CODE

; check to see if list of running processes are different

Func TestForChangedProcesses()

$currentProcesses=ProcessList()

For $i=1 To $currentProcesses[0][0]-1

If Not($currentProcesses[$i][0] == $list[$i][0]) Then ; check to see if saved processes are different

LogToFile("Application changed " & $currentProcesses[$i][0])

$list=$currentProcesses ; because processes changed set new list to be the one to test against

EndIf

next

EndFunc

Which line is the error happening on?

[weaponx]

The answer is obvious. If the first snapshot of the processlist contains 20 processes and the second ($currentProcesses) contains 21 you will get an error trying to access the 21st element in the first array.

See here for a bettter solution:

http://www.autoitscript.com/forum/index.ph...&hl=ListTwo

Edited April 7, 2008 by weaponx

[maestro1024]

Thanks

But I am not sure I see the difference. Where in this code are you checking or how do you know you are not out of bounds?

CODE

;Store current processlist "state"

$ListOne = ProcessList ()

While 1

$ListTwo = ProcessList ()

;Verify each process exists in original state, if not, KILL IT!!!!!!!!!!!!!!!!

For $X = 1 to $ListTwo[0][0]

$found = false

;Comparing by PID, because danwilli would prefer it

For $Y = 1 to $ListOne[0][0]

If $ListOne[$Y][1] = $ListTwo[$X][1] Then

$found = true

ExitLoop

EndIf

Next

If $found = false Then

MsgBox(0,"","New process found: " & $ListTwo[$X][0])

someFunction()

EndIf

Next

;Check every 3 seconds

Sleep (3000)

WEnd

Func someFunction()

MsgBox(0,"","A new process was opened")

EndFunc

[weaponx]

In your code you are comparing every element like this:

For $i=1 To $currentProcesses[0][0]-1

If Not($currentProcesses[$i][0] == $list[$i][0])

This assumes both arrays have the same number of elements.

My script loops through all elements in the second snapshot one at a time.

For $X = 1 to $ListTwo[0][0]

Then for each of those elements I search every element in the first array:

For $Y = 1 to $ListOne[0][0]

This means the sizes are independent of each other.