I'm a complete novice in everything except maybe breathing, so sorry if I'm not being clear, but here goes:

I have a function in C which writes bytes to a circuit via an I2C bus, and in the header file it looks like this:

```
BOOL WINAPI JidaI2CWrite(HJIDA hJida, DWORD dwType, BYTE bAddr, LPBYTE pBytes, DWORD dwLen);

```

* hJida: Board handle.
* dwType: Zero-based number of the I2C
bus.
* bAddr: Address of the device on the
I2C bus, the full 8 bits as it is
written to the bus.
* pBytes: Pointer to location that
contains the bytes.
* dwLen: Number of bytes to write.

If I wanted to write just one byte to a circuit with the address 0x98, I would do something like this:

```
unsigned char writing[1];
writing[0]=0x10;

unsigned char *pointer;
pointer = &writing[0];

JidaI2CWrite(hJida,0,0x98,pointer,1);

```

which seems to work, but if I wanted to write two bytes, say 0x10FF, it doesn't. So how do I make a pointer that points to two bytes instead of just one? 

Thanks