Script executing too slow

[incubusor]

#include <Misc.au3>
#include <MsgBoxConstants.au3>

$DLL = DllOpen("user32.dll")

$keyPressTimer = 0

; Application Loop
While 1
   ; Exit Application
   If _IsPressed("7A", $DLL) And _IsPressed("11", $DLL) Then
     ExitLoop
   EndIf

   If _IsPressed("57", $DLL) Then
      $keyPressTimer += 1
      If $keyPressTimer > 500 Then
         MsgBox("TestApp", "Debug", "W was held for more than half a second")
      EndIf
   ElseIf _IsPressed("57", $DLL) = 0 And $keyPressTimer > 0 Then
      $keyPressTimer = 0
   EndIf

Sleep(1); 1 milisecond
WEnd
DllClose($DLL)

Shouldn't Sleep(1) result in a 1 millisecond delay for the main loop? So the counter that increments as W is being held down should be increasing by 1 every millisecond right?

Edited February 16, 2014 by incubusor

[Melba23]

incubusor,

The minimum pause used by Sleep is about 10ms - this is a Windows limitation - so using a value of less than 10 will still pause for that minimum time. The exception is Sleep[0] which gives up the next timeslice for the thread. This has been explained many times on the forum and a quick search would have saved both our fingers some wear and tear - it is also quite clearly mentioned in the Help file.

If you really want shorter pauses then monoceres produced this UDF which can pause for mere nanoseconds.

M23

Edited February 16, 2014 by Melba23
Typo