IOCTL_BLUETOOTH_GET_RFCOMM_CHANNEL (Compact 2013)
3/26/2014
This I/O control message determines the RFCOMM (Serial Cable Emulation Protocol) channel assigned when the server channel is auto-bound. Send this message with DeviceIoControl.
Syntax
BOOL DeviceIoControl(
HANDLE hDevice, // handle to the device
DWORD dwIoControlCode, // use IOCTL_BLUETOOTH_GET_RFCOMM_DEVICE
LPVOID lpInBuffer, // pointer to input buffer
DWORD nInBufferSize, // input buffer size
LPVOID lpOutBuffer, // pointer to output buffer
DWORD nOutBufferSize, // output buffer size
LPDWORD lpBytesReturned, // number of bytes returned
OVERLAPPED lpOverlapped // pointer to OVERLAPPED structure
);
Parameters
- hDevice
[in] Handle to the device.
- dwIoControlCode
[in] Control code for the operation. Use IOCTL_BLUETOOTH_GET_RFCOMM_DEVICE for this operation.
- lpInBuffer
[in] Set to NULL.
- nInBufferSize
[in] Set to zero
- lpOutBuffer
[out] Pointer to a DWORD that receives the channel number.
- nOutBufferSize
[out] Set to sizeof(DWORD).
- lpBytesReturned
[in][out] set to NULL.
- lpOverlapped
[in] Ignored, set to NULL.
Remarks
The server channel is auto-bound when the virtual COM port is registered with PORTEMUPortParams.channel = RFCOMM_CHANNEL_MULTIPLE.
Requirements
Header |
bt_api.h |