As all your functions are `APIENTRY`, write `extern(Windows):`
before them. And use `c_ulong` as analogue of `unsigned long`.
So full correct `IBank` interface declaration here:
---
import core.stdc.config: c_ulong;
extern(C++) interface IBank
{
extern(Windows):
const char* getLastError();
const char* getDetail(char* detail);
bool deposit(c_ulong number, double amount);
bool withdraw(c_ulong number, double amount);
double getBalance(c_ulong number);
bool transfer(c_ulong numberFrom, IBank* bankTo, c_ulong
numberTo, double amount);
bool transferAccept(IBank* bankFrom, c_ulong numberTo,
double amount);
};
---
Thank you very much, Denis. It was quite confusing to mix
extern(C++) and extern(Windows). And I also thank Jakob for
syntax specification.
BTW, it's said in the ABI reference that `unsigned long` must be
substituted with `uint`. And it seems to work fine for the data I
used in the example.
