During boot time, the Bluetooth Protocol Stack takes time to fully load and initialize. You can check the initialization status of the Bluetooth stack by using the symbolic define BTH_NAMEDEVENT_STACK_INITED, defined in %_WINCEROOT%\Public\Common\Sdk\Inc\Bt_api.h. To open this named event, use the OpenEvent function. and is used to open a named event.
The following example code how to open the named event, BTH_NAMEDEVENT_STACK_INITED, to check the status of the Bluetooth stack.
// Make sure BT stack is up
BOOL fStackUp = FALSE;
for (int i = 0 ; i < 100 ; ++i)
{
HANDLE hBthStackInited = OpenEvent (EVENT_ALL_ACCESS, FALSE, BTH_NAMEDEVENT_STACK_INITED);
if (hBthStackInited)
{
DWORD dwRes = WaitForSingleObject (hBthStackInited, INFINITE);
CloseHandle (hBthStackInited);
if (WAIT_OBJECT_0 == dwRes)
{
fStackUp = TRUE;
break;
}
}
Sleep (1000);
}
if (! fStackUp)
{
// Perform error handling.
}
See Also
Bluetooth Application Development
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