IStiUSD::RawWriteCommand method (stiusd.h)
A still image minidriver's IStiDevice::RawWriteCommand method sends command information to a still image device.
Syntax
HRESULT RawWriteCommand(
LPVOID lpBuffer,
DWORD nNumberOfBytes,
LPOVERLAPPED lpOverlapped
);
Parameters
lpBuffer
Caller-supplied pointer to a buffer containing data to be sent to the device.
nNumberOfBytes
Caller-supplied number of bytes to be written. This is the number of bytes in the buffer pointed to by lpBuffer.
lpOverlapped
Optional, caller-supplied pointer to an OVERLAPPED structure (described in the Microsoft Windows SDK documentation).
Return value
If the operation succeeds, the method should return S_OK. Otherwise, it should return one of the STIERR-prefixed error codes defined in stierr.h.
Remarks
It is only necessary to call IStiUSD::RawWriteCommand if commands and data are written to a device by different methods. For other devices, IStiUSD::RawWriteData can be used for both commands and data. If the call is not implemented, it must return STIERR_UNSUPPORTED.
Implementation of this method, along with the meaning of buffer contents, are vendor-defined.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | stiusd.h (include Stiusd.h) |