;Script Start
$App   = 'TestApp'
$Title = 'AppTitle'

$MyDLL   = 'C:\projects\MyApp\MyApp.dll'
FileChangeDir("C:\projects\MyApp\MyApp.dll")	;; Required to find other dependent DLL's

Local $dllHnd      = DllOpen($MyDLL)

Run($App)
WinWaitActive($Title)
$MsgStr = ""

;; these are the correct values
Local $SimpleTest     = 0x10D2  ; ?TestChars@OAutoITTestClass@@QAEPADH@Z
Local $ComplexTest    = 0x10D8  ; ?TestButtons@OAutoITTestClass@@QAEPADXZ'

;; --------------------------
;; This works fine
;; --------------------------
$res = DllCall($dllHnd, "str", $SimpleTest)
if @error Then
	$MsgStr = StringFormat("String test error %d", @error)
	MsgBox(0,"Get Button Char Error", $MsgStr)
Else
    $rv = $res[0]
	$st = StringFormat("String test was %s", $rv)
	MsgBox(0,"First test Results", $st)
EndIf

;; --------------------------
;; This doesn't work
;; --------------------------
$res = DllCall($dllHnd, "str", $ComplexTest)
if @error Then
	$MsgStr = StringFormat("Get Button Strings test error %d", @error)
	MsgBox(0,"Get Button Char Error", $MsgStr)
Else
    $rv = $res[0]
	$st = StringFormat("String test was %s", $rv)
	MsgBox(0,"Second test Results", $st)
EndIf


DllClose($dllHnd)

;; end of script