_WinAPI_GetLastErrorMessage - accept specified error code parameter

[anonymous]

; #FUNCTION# ====================================================================================================================
; Name...........: _WinAPI_GetLastErrorMessage
; Description ...: Returns the calling threads last error message
; Syntax.........: _WinAPI_GetLastErrorMessage([$iError])
; Parameters ....: $iError 
; Return values .: Success      - Last error message
; Author ........: Paul Campbell (PaulIA)
; Modified.......: jpm, danielkza, Valik
; Remarks .......:
; Related .......: _WinAPI_GetLastError
; Link ..........:
; Example .......:
; ===============================================================================================================================
Func _WinAPI_GetLastErrorMessage($nError = False)
    Local $tBufferPtr = DllStructCreate("ptr")
	Local $pBufferPtr = DllStructGetPtr($tBufferPtr)
	
	If Not $nError Then $iError = _WinAPI_GetLastError()

	Local $nCount = _WinAPI_FormatMessage(BitOR($__WINAPICONSTANT_FORMAT_MESSAGE_ALLOCATE_BUFFER, $__WINAPICONSTANT_FORMAT_MESSAGE_FROM_SYSTEM), _
		0, $nError, 0, $pBufferPtr, 0, 0)
    If @error Then Return SetError(@error, 0, "")

     Local $sText = ""
    Local $pBuffer = DllStructGetData($tBufferPtr, 1)
    If $pBuffer Then
        If $nCount > 0 Then
            Local $tBuffer = DllStructCreate("wchar[" & ($nCount+1) & "]", $pBuffer)
            $sText = DllStructGetData($tBuffer, 1)
        EndIf
        _WinAPI_LocalFree($pBuffer)
    EndIf

    Return $sText
EndFunc   ;==>_WinAPI_GetLastErrorMessage

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