< Bluetooth | Winsock2 Supported Protocols Main | Bluetooth Query Device & Service >
Winsock 2: Other Supported Protocols 4 Part 12
What do we have in this chapter 4 part 12?
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Bluetooth Device Query Using Win32 PSDK
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Another Bluetooth Program Example Using Win32 PSDK
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Bluetooth Device Query Using Win32 PSDK
Create a new empty Win32 console mode application and add the project/solution name.
Add the following source code. |
// If you have 1 or more bluetooth dongles attached to the system.
// this will select the first one, then it will perform a scan for
// all devices within range of that dongle and print out all the
// information available about each device. then move on to the next
// dongle and repeat the process, etc. doesn't actually DO much apart
// from find devices and display their information.
#include <stdlib.h>
#include <stdio.h>
// Link to ws2_32.lib
#include <Winsock2.h>
#include <Ws2bth.h>
// Link to Bthprops.lib
#include <BluetoothAPIs.h>
BLUETOOTH_FIND_RADIO_PARAMS m_bt_find_radio = {sizeof(BLUETOOTH_FIND_RADIO_PARAMS)};
BLUETOOTH_RADIO_INFO m_bt_info = {sizeof(BLUETOOTH_RADIO_INFO),0,};
BLUETOOTH_DEVICE_SEARCH_PARAMS m_search_params = {
sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS),
1,
0,
1,
1,
1,
15,
NULL
};
BLUETOOTH_DEVICE_INFO m_device_info = {sizeof(BLUETOOTH_DEVICE_INFO),0,};
// Note:
// Radio - is the thing plugged in/attached to the local machine.
// Device - is the thing that is connected to via the Bluetooth connection.
int main(int argc, char **args)
{
HANDLE m_radio = NULL;
HBLUETOOTH_RADIO_FIND m_bt = NULL;
HBLUETOOTH_DEVICE_FIND m_bt_dev = NULL;
int m_radio_id;
int m_device_id;
DWORD mbtinfo_ret;
// Iterate for available bluetooth radio devices in range
// Starting from the local
while(TRUE)
{
m_bt = BluetoothFindFirstRadio(&m_bt_find_radio, &m_radio);
if(m_bt != NULL)
printf("BluetoothFindFirstRadio() is OK!\n");
else
printf("BluetoothFindFirstRadio() failed with error code %d\n", GetLastError());
m_radio_id = 0;
do {
// Then get the radio device info....
mbtinfo_ret = BluetoothGetRadioInfo(m_radio, &m_bt_info);
if(mbtinfo_ret == ERROR_SUCCESS)
printf("BluetoothGetRadioInfo() looks fine!\n");
else
printf("BluetoothGetRadioInfo() failed wit herror code %d\n", mbtinfo_ret);
wprintf(L"Radio %d:\r\n", m_radio_id);
wprintf(L"\tInstance Name: %s\r\n", m_bt_info.szName);
wprintf(L"\tAddress: %02X:%02X:%02X:%02X:%02X:%02X\r\n", m_bt_info.address.rgBytes[5],
m_bt_info.address.rgBytes[4], m_bt_info.address.rgBytes[3], m_bt_info.address.rgBytes[2],
m_bt_info.address.rgBytes[1], m_bt_info.address.rgBytes[0]);
wprintf(L"\tClass: 0x%08x\r\n", m_bt_info.ulClassofDevice);
wprintf(L"\tManufacturer: 0x%04x\r\n", m_bt_info.manufacturer);
m_search_params.hRadio = m_radio;
ZeroMemory(&m_device_info, sizeof(BLUETOOTH_DEVICE_INFO));
m_device_info.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
// Next for every radio, get the device
m_bt_dev = BluetoothFindFirstDevice(&m_search_params, &m_device_info);
if(m_bt_dev != NULL)
printf("\nBluetoothFindFirstDevice() is working!\n");
else
printf("\nBluetoothFindFirstDevice() failed with error code %d\n", GetLastError());
m_radio_id++;
m_device_id = 0;
// Get the device info
do
{
wprintf(L"\n\tDevice %d:\r\n", m_device_id);
wprintf(L" \tInstance Name: %s\r\n", m_device_info.szName);
wprintf(L" \tAddress: %02X:%02X:%02X:%02X:%02X:%02X\r\n", m_device_info.Address.rgBytes[5],
m_device_info.Address.rgBytes[4], m_device_info.Address.rgBytes[3], m_device_info.Address.rgBytes[2],
m_device_info.Address.rgBytes[1], m_device_info.Address.rgBytes[0]);
wprintf(L" \tClass: 0x%08x\r\n", m_device_info.ulClassofDevice);
wprintf(L" \tConnected: %s\r\n", m_device_info.fConnected ? L"true" : L"false");
wprintf(L" \tAuthenticated: %s\r\n", m_device_info.fAuthenticated ? L"true" : L"false");
wprintf(L" \tRemembered: %s\r\n", m_device_info.fRemembered ? L"true" : L"false");
m_device_id++;
// Well, the found device information can be used for further socket
// operation such as creating a socket, bind, listen, connect, send, receive etc..
// If no more device, exit the loop
if(!BluetoothFindNextDevice(m_bt_dev, &m_device_info))
break;
} while(BluetoothFindNextDevice(m_bt_dev, &m_device_info));
// NO more device, close the device handle
if(BluetoothFindDeviceClose(m_bt_dev) == TRUE)
printf("\nBluetoothFindDeviceClose(m_bt_dev) is OK!\n");
else
printf("\nBluetoothFindDeviceClose(m_bt_dev) failed with error code %d\n", GetLastError());
} while(BluetoothFindNextRadio(&m_bt_find_radio, &m_radio));
// No more radio, close the radio handle
if(BluetoothFindRadioClose(m_bt) == TRUE)
printf("BluetoothFindRadioClose(m_bt) is OK!\n");
else
printf("BluetoothFindRadioClose(m_bt) failed with error code %d\n", GetLastError());
// Exit the outermost WHILE and BluetoothFindXXXXRadio loops if there is no more radio
if(!BluetoothFindNextRadio(&m_bt_find_radio, &m_radio))
break;
// Give some time for the 'signal' which is a typical for crap wireless devices
Sleep(1000);
}
return 0;
}
Build and run the project. The following screenshot shows a sample output.
--------------------------------------------------------------------
Another Bluetooth Program Example Using Win32 PSDK
Create a new empty Win32 console mode application and add the project/solution name.
Add the following source code.
#include <stdlib.h>
#include <stdio.h>
// Link to ws2_32.lib
#include <Winsock2.h>
#include <Ws2bth.h>
// Link to Bthprops.lib
#include <BluetoothAPIs.h>
int main(int argc, char **argv)
{
HANDLE hRadio, hDeviceFind;
BLUETOOTH_DEVICE_INFO_STRUCT deviceInfo;
BLUETOOTH_DEVICE_SEARCH_PARAMS deviceSearchParams;
BLUETOOTH_RADIO_INFO radioInfo;
GUID guidServices[10];
DWORD numServices, result;
int i = 1;
BLUETOOTH_FIND_RADIO_PARAMS btfrp = { sizeof(BLUETOOTH_FIND_RADIO_PARAMS) };
HBLUETOOTH_RADIO_FIND hFind = BluetoothFindFirstRadio(&btfrp, &hRadio);
if (hFind != NULL)
{
printf("BluetoothFindFirstRadio() is working!\n");
do
{
// Do something with the radio handle...
radioInfo.dwSize = sizeof(radioInfo);
if (BluetoothGetRadioInfo(hRadio, &radioInfo) == ERROR_SUCCESS)
{
printf("BluetoothGetRadioInfo() is OK!\n");
printf(" Radio found: %S\n", radioInfo.szName);
}
else
printf("BluetoothGetRadioInfo() failed with error code %d\n", GetLastError());
deviceInfo.dwSize = sizeof(deviceInfo);
memset(&deviceSearchParams, 0, sizeof(deviceSearchParams));
deviceSearchParams.dwSize = sizeof(deviceSearchParams);
// deviceSearchParams.fReturnAuthenticated = TRUE;
deviceSearchParams.fReturnRemembered = TRUE;
//deviceSearchParams.fReturnUnknown = TRUE;
//deviceSearchParams.fReturnConnected = TRUE;
deviceSearchParams.hRadio = hRadio;
hDeviceFind = BluetoothFindFirstDevice(&deviceSearchParams, &deviceInfo);
if (hDeviceFind != NULL)
{
printf("BluetoothFindFirstDevice() is OK!\n");
do
{
printf(" Device found - Name: %S\n", deviceInfo.szName);
printf(" Device found - Address: %X\n", deviceInfo.Address);
printf(" Device found - Device Class: %ul\n", deviceInfo.ulClassofDevice);
numServices = sizeof(guidServices);
// guidServices should contains a complete list of enabled service GUIDs.
result = BluetoothEnumerateInstalledServices(hRadio, &deviceInfo, &numServices, guidServices);
if (result == ERROR_SUCCESS)
{
printf("BluetoothEnumerateInstalledServices() should be fine!\n");
printf(" ...GUID services\n");
}
else
printf("BluetoothEnumerateInstalledServices() failed with error code %d\n", result);
}
while(BluetoothFindNextDevice(hDeviceFind, &deviceInfo));
BluetoothFindDeviceClose(hDeviceFind);
}
// Need to re-allocate, else BluetoothGetDeviceInfo() will fail
memset(&deviceInfo, 0, sizeof(deviceInfo));
deviceInfo.dwSize = sizeof(deviceInfo);
if (BluetoothGetDeviceInfo(hRadio, &deviceInfo))
{
printf("BluetoothGetDeviceInfo() is OK!\n");
printf(" ...More operations...\n");
// BluetoothUpdateDeviceRecord() - change name, BluetoothRemoveDevice() etc.
}
else
printf("BluetoothGetDeviceInfo() failed with error code %d\n", GetLastError());
CloseHandle(hRadio);
} while( BluetoothFindNextRadio(hFind, &hRadio));
BluetoothFindRadioClose(hFind);
}
return 0;
}
Build and run the project.
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