0123: A 'thiscall' function requires a pointer

Compiler found a foreign function declaration with thiscall calling convention, but didn't find a required argument for the function.

thiscall functions are methods of a class, and by definition work with many instances of that class. They must have at least one argument that will identify the instance on which this method is called. Imagine a method Destroy of class Car:

function Car_Destroy<thiscall,0x0C0DE000>()

Without an instance argument it is unclear what particular car needs to be destroyed.

Possible solutions:

• define a parameter of type int in the function declaration:

function Car_Destroy<thiscall,0x0C0DE000>(struct: int)

When calling this method, you must also provide a valid argument:

int car_address = GET_VEHICLE_POINTER myCar
Car_Destroy(car_address)