Compiler Error C0241

Message: Second Operand of __QueryPointer must be pointer

Possible error cause: Incorrect operands are passed to the operator __QueryPointer.

Error correction: Pass a pointer.

Example 459. Example of the error:

PROGRAM PLC_PRG
VAR
    b : INT;
    ITFref : ITF;
    pt : POINTER TO FB;
END_VAR

__QueryPointer(ITFref,b);

INTERFACE ITF EXTENDS __System.IQueryInterface

Message:

C0241: Second Operand of __QueryPointer must be pointer

Error correction:

__QueryPointer (ITFref, pt);