Question

我有问题我暂时无法解决。对于我的一个C ++项目，我必须编写功能来更改蓝牙无线电本地名称。它使用Microsoft蓝牙堆栈。如果打开任何蓝牙适配器设备属性并导航到“高级属性”，则可以找到此名称。我需要这个没有任何第三方库，只有WinApi函数。需要以Windows设备管理器的方式执行此操作。问题是我没弄清楚它是如何做到的。 BluetoothAPI和Setupapi似乎在这里毫无用处。带有SPDRP_FRIENDLYNAME参数的SetupDiSetDeviceRegistryProperty不是我需要的。在注册表中更改本地名称也不做任何事情也许我应该以某种方式重新启动蓝牙堆栈。我不知道。那么，我如何以编程方式更改设备高级属性？提前谢谢。

Answer 1

我自己找到了解决方案：

#include <windows.h>
#include <Setupapi.h>
#include <stdio.h>
#include <tchar.h>
#include <cfgmgr32.h>
#include <devguid.h>
#include <string>
#pragma comment(lib,"setupapi.lib")
using namespace std;

#define WIN32_LEAN_AND_MEAN

typedef basic_string<TCHAR> tstring;
DEFINE_GUID(GUID_DEVCLASS_BLUETOOTH, {0xe0cbf06cL, 0xcd8b, 0x4647, {0xbb, 0x8a, 0x26, 0x3b, 0x43, 0xf0, 0xf9, 0x74}});


LPTSTR GetGenericBluetoothAdapterInstanceID(void)
{
        unsigned i;    
        CONFIGRET r;
        HDEVINFO hDevInfo;
        SP_DEVINFO_DATA DeviceInfoData;
        PTSTR deviceInstanceID = new TCHAR[MAX_DEVICE_ID_LEN];

        // Find all bluetooth radio modules
        hDevInfo = SetupDiGetClassDevs(&GUID_DEVCLASS_BLUETOOTH, NULL, NULL, DIGCF_PRESENT);

        if (hDevInfo == INVALID_HANDLE_VALUE)
                return NULL;   

        // Get first Generic Bluetooth Adapter InstanceID
        for (i = 0; ; i++)  
        {              
                DeviceInfoData.cbSize = sizeof (DeviceInfoData);

                if (!SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData))
                        break;

                r = CM_Get_Device_ID(DeviceInfoData.DevInst, deviceInstanceID , MAX_PATH, 0);

                if (r != CR_SUCCESS)
                        continue;

                if (_tcsncmp(_TEXT("USB"), deviceInstanceID, 3) == 0)
                {                      
                        return deviceInstanceID;
                }
        }

        return NULL;
}

void find_and_replace(LPTSTR source, LPCTSTR strFind, LPCTSTR strReplace)
{
        tstring s = tstring(source);
        tstring f = tstring(strFind);
        tstring r = tstring(strReplace);       
        size_t j;

        for ( ; (j = s.find( f )) != string::npos ; )
        {
                s.replace( j, f.length(), r );
        }

        _tcscpy(source, s.c_str());
}

int _tmain(int argc, TCHAR *argv[])
{
        if ( argc != 2 )
        {
                _tprintf( TEXT("Invalid parameters number. "
                        TEXT("Usage: Bthrmmodifier.exe <radio module local name>\n")));
                return 1;
        }

        LPTSTR instanceID = GetGenericBluetoothAdapterInstanceID();

        if (instanceID == NULL)
        {
                _tprintf(_TEXT("Failed to get Generic Bluetooth Adapter InstanceID\n"));
                return 1;
        }

        LPTSTR instanceIDModified = new TCHAR[_tcslen(instanceID)];
        _tcscpy(instanceIDModified, instanceID);
        find_and_replace(instanceIDModified, _TEXT("\\"), _TEXT("#"));

        HANDLE hDevice;
        TCHAR fileName[1024] = { 0 };  
        _tcscpy(fileName, _TEXT("\\\\.\\"));   
        _tcscat(fileName, instanceIDModified);
        _tcscat(fileName, _TEXT("#{a5dcbf10-6530-11d2-901f-00c04fb951ed}"));

        hDevice = CreateFile(fileName, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);

        if (hDevice == INVALID_HANDLE_VALUE)
        {
                _tprintf(_TEXT("Failed to open device. Error code: %d\n"), GetLastError());            
                return EXIT_FAILURE;
        }

        //Change radio module local name in registry
        LPTSTR RMLocalName = argv[1];
        CHAR bufRMLocalName[256];

        int nLength = WideCharToMultiByte(CP_UTF8, 0, RMLocalName,
                -1, NULL, 0, NULL, NULL);
        WideCharToMultiByte(CP_UTF8, 0, RMLocalName,
                -1, bufRMLocalName, nLength, NULL, NULL);

        HKEY hKey;
        TCHAR rmLocalNameKey[1024] = { 0 };
        LSTATUS ret;
        _tcscpy(rmLocalNameKey, _TEXT("SYSTEM\\ControlSet001\\Enum\\"));       
        _tcscat(rmLocalNameKey, instanceID);
        _tcscat(rmLocalNameKey, _TEXT("\\Device Parameters"));

        ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, rmLocalNameKey,
                0L, KEY_SET_VALUE , &hKey);

        if(ret != ERROR_SUCCESS)
        {
                _tprintf(TEXT("Failed to open registry key. Error code: %d\n"), ret);
                return EXIT_FAILURE;
        }

        ret = RegSetValueEx(hKey, _TEXT("Local Name"), 0, REG_BINARY,
                (LPBYTE)bufRMLocalName, nLength);

        if (ret != ERROR_SUCCESS)
        {
                _tprintf(TEXT("Failed to set registry key. Error code: %d\n"), ret);
                return EXIT_FAILURE;
        }

        RegCloseKey(hKey);

        // This check decides what IO control code to use based on if we're in XP or Vista (and later).
        OSVERSIONINFO osver;
        osver.dwOSVersionInfoSize = sizeof(osver);
        GetVersionEx(&osver);

        UINT ctlCode = (UINT)(6 > osver.dwMajorVersion ? 0x220fd4 : 0x411008);
        long reload = 4;  // tells the control function to reset or reload or similar...
        DWORD bytes = 0; // merely a placeholder

        // Send radio module driver command to update device information
        if (!DeviceIoControl(hDevice, ctlCode, &reload, 4, NULL, 0, &bytes, NULL))
        {
                _tprintf(TEXT("Failed to update radio module local name. Error code: %d\n"), GetLastError());
                return EXIT_FAILURE;
        }

        _tprintf(TEXT("Done\n"));

        return EXIT_SUCCESS;
}

蓝牙设备本地名称

1 个答案: