Code
Extern "Windows-MS"
Function _Add(iX As Integer, iY As Integer)As Integer Export
Return iX + iY
End Function
End Extern
$hDll = DllOpen("Add.dll")
$aResult = DllCall($hDll, "int", "_Add", "int", 1234, "int", 1234)
ConsoleWrite("Ergebnis = " & $aResult[0] & @CRLF)
Ohne Extern "Windows-MS" müsste man den DllCall so machen: _ADD@8
Oder in deinem Fall ADDIEREN@8
E