, you would use a null pointer
_IEC_RESULT Input pApp POINTER [...] GetBooleanProperty POINTER TO POINTER [...] GetTextProperty POINTER TO POINTER
Configuration POINTER TO POINTER [...] Configuration2 POINTER TO POINTER [...] BufferTimestamps POINTER TO POINTER
Instance POINTER TO BYTE Pointer [...] Get POINTER TO POINTER TO BYTE Pointer to Get
Interface : POINTER TO POINTER TO BYTE In [...] Interface POINTER TO POINTER
Interface : POINTER TO POINTER TO BYTE In [...] Interface POINTER TO POINTER
Interface : POINTER TO POINTER TO BYTE In [...] Interface POINTER TO POINTER
Interface : POINTER TO POINTER TO BYTE In [...] Interface POINTER TO POINTER
Interface : POINTER TO POINTER TO BYTE In [...] Interface POINTER TO POINTER