public static SENSE4_CONTEXT[] EnumAllS4()
{
SENSE4_CONTEXT[] pstS4CtxList = null;
uint dwCtxListSize = 0;
uint dwResult = 0;
uint dwDeviceNum = 0;
dwResult = S4_API.S4Enum(null, ref dwCtxListSize);
if (dwResult != S4_API.S4_SUCCESS && dwResult != S4_API.S4_INSUFFICIENT_BUFFER)
{
#if DEBUG
string msg = string.Format("Enumerate EliteIV failed! <error code: 0x%08x>\n", dwResult);
MessageBox.Show(msg);
#endif
return(null);
}
if (0 == dwCtxListSize)
{
//#if DEBUG
// MessageBox.Show("EliteIV not found!\n");
//#endif
return(null);
}
// allocate memory for EliteIV context list/array
pstS4CtxList = new SENSE4_CONTEXT[dwCtxListSize / Marshal.SizeOf(typeof(SENSE4_CONTEXT))];
dwDeviceNum = (uint)(dwCtxListSize / Marshal.SizeOf(typeof(SENSE4_CONTEXT)));
/*
* This time, call S4Enum(...) to do the real Enumeration.
* All the fields of the EliteIV context(s) pointed by pstS4CtxList will be filled
* with the corresponding device information upon a successful function return.
*/
dwResult = S4_API.S4Enum(pstS4CtxList, ref dwCtxListSize);
if (dwResult != S4_API.S4_SUCCESS)
{
#if DEBUG
string msg = string.Format("Open EliteIV failed! <error code: {0}x%08x>\n", dwResult);
MessageBox.Show(msg);
#endif
//free(pstS4CtxList);
pstS4CtxList = null;
}
return(pstS4CtxList);
}
public const int DBT_DEVICETYPESPECIFIC = 0x8005; // type specific event
/*
* Print an array in Hex.
* Parameters:
* fp[in] : file pointer
* data[in]: data to be printed
* len[in] : data length
*
* Return:
* none.
*
* Remarks:
* none.
*/
//void hexprint(FILE *fp, void *data, int len)
//{
// unsigned char *pdata = (unsigned char *)data;
// int i = 0;
// for (; i<len ;i++)
// {
// if (!(i%16))
// fprintf(fp,"\n");
// fprintf(fp, "%02x:",*(pdata+i));
// }
// fprintf(fp, "\n");
//}
/*
* Select and open specified EliteIV device
* Parameters:
* index[in] : device index
* pstS4Ctx[out]: pointer to EliteIV context
*
* Return:
* If the function succeeds, it will return 1(TRUE), otherwise
* it returns 0(FALSE).
*
* Remarks:
* none.
*/
public static BYHX_SL_RetValue OpenS4ByIndex(int index, ref SENSE4_CONTEXT pstS4Ctx)
{
if (index < 0)
{
return(BYHX_SL_RetValue.NOFOUNDDOG);
}
SENSE4_CONTEXT[] pstS4CtxList = null;
uint dwCtxListSize = 0;
uint dwResult = 0;
uint dwDeviceNum = 0;
//if (null == pstS4Ctx)
//{
// MessageBox.Show("Invalid pointer!\n");
// return 0;
//}
/*
* Use S4Enum(...) to Enumerate all the devices connected to the host.
* Using null as the 1st parameter will instruct S4Enum to return the buffer size needed to hold
* the corresponding EliteIV context in the 2nd parameter:dwCtxListSize.
* Generally only two results possible on return: (dwCtxListSize == 0) which means no EliteIV device
* present or (dwCtxListSize != 0) and that's saying there are dwCtxListSize/sizeof(SENSE4_CONTEXT) sets
* of EliteIV devices connected currently.
*/
dwResult = S4_API.S4Enum(null, ref dwCtxListSize);
if (dwResult != S4_API.S4_SUCCESS && dwResult != S4_API.S4_INSUFFICIENT_BUFFER)
{
#if DEBUG
string msg = string.Format("Enumerate EliteIV failed! <error code: 0x%08x>\n", dwResult);
MessageBox.Show(msg);
#endif
return(BYHX_SL_RetValue.NOFOUNDDOG);
}
if (0 == dwCtxListSize)
{
#if DEBUG
MessageBox.Show("EliteIV not found!\n");
#endif
return(BYHX_SL_RetValue.NOFOUNDDOG);
}
// allocate memory for EliteIV context list/array
pstS4CtxList = new SENSE4_CONTEXT[dwCtxListSize / Marshal.SizeOf(typeof(SENSE4_CONTEXT))];;
if (null == pstS4CtxList)
{
#if DEBUG
MessageBox.Show("Not enough memory! \n");
#endif
return(BYHX_SL_RetValue.NOFOUNDDOG);
}
dwDeviceNum = (uint)(dwCtxListSize / Marshal.SizeOf(typeof(SENSE4_CONTEXT)));
if (index + 1 > dwDeviceNum)
{
#if DEBUG
string msg = string.Format("Invalid index!<index should be within [0..%d]> \n", dwDeviceNum - 1);
MessageBox.Show(msg);
#endif
//free(pstS4CtxList);
pstS4CtxList = null;
return(BYHX_SL_RetValue.NOFOUNDDOG);
}
/*
* This time, call S4Enum(...) to do the real Enumeration.
* All the fields of the EliteIV context(s) pointed by pstS4CtxList will be filled
* with the corresponding device information upon a successful function return.
*/
dwResult = S4_API.S4Enum(pstS4CtxList, ref dwCtxListSize);
if (dwResult != S4_API.S4_SUCCESS)
{
#if DEBUG
string msg = string.Format("Open EliteIV failed! <error code: {0}x%08x>\n", dwResult);
MessageBox.Show(msg);
#endif
//free(pstS4CtxList);
pstS4CtxList = null;
return(BYHX_SL_RetValue.ILLEGALDOG);
}
// use device with specified index
pstS4Ctx = pstS4CtxList[index];
//free(pstS4CtxList);
pstS4CtxList = null;
// Call S4Open(...) to open the specified EliteIV device in "share mode".
//S4OPENINFO s4openinfo =new S4OPENINFO();
//s4openinfo.dwS4OpenInfoSize = (short)Marshal.SizeOf(typeof(S4OPENINFO));
//s4openinfo.dwShareMode = (short)S4_API.S4_EXCLUSIZE_MODE;
//dwResult = S4_API.S4OpenEx(ref pstS4Ctx, s4openinfo);
dwResult = S4_API.S4Open(ref pstS4Ctx);
if (dwResult != S4_API.S4_SUCCESS)
{
#if DEBUG
string msg = string.Format("Open EliteIV failed! <error code: {0}x%08x>\n", dwResult);
MessageBox.Show(msg);
#endif
return(BYHX_SL_RetValue.ILLEGALDOG);
}
return(BYHX_SL_RetValue.SUCSESS);
}