参考：DeviceIoControl 函数详细解析
BOOL WINAPI DeviceIoControl(_In_ HANDLE hDevice,_In_ DWORD dwIoControlCode,_In_opt_ LPVOID lpInBuffer,_In_ DWORD nInBufferSize,_Out_opt_ LPVOID lpOutBuffer,_In_ DWORD nOutBufferSize,_Out_opt_ LPDWORD lpBytesReturned,_Inout_opt_ LPOVERLAPPED lpOverlapped
);
- @param
hDevice：设备句柄，通过CreateFile获得 - @param
dwIoControlCode：控制码，每个控制码都提供了lpInBuffer，nInBufferSize，lpOutBuffer和nOutBufferSize参数的使用细节 - @param
lpInBuffer，nInBufferSize，lpOutBuffer，nOutBufferSize根据控制码不同 - lpBytesReturned 返回实际数据空间的大小，如果
lpOutBuffer缓冲区大于实际缓冲区则lpBytesReturned 为实际缓冲区大小，如果lpOutBuffer缓冲区小于实际缓冲区则lpBytesReturned为lpOutBuffer缓冲区大小 - @param
lpOverlapped基本不使用，直接NULL
通过CreateFile打开设备驱动程序的句柄时，应指定FILE_SHARE_READ和FILE_SHARE_WRITE访问标志。但是，当您打开通信资源（如串行端口）时，必须指定独占访问权限。FileName通常以如下形式：
| 文件名称 | 含义 |
|---|---|
| \\.\PhysicalDriveX | 获取物理驱动器X的信息，X以下标0开始计算 |
| \\.\X: | 获取逻辑分区X的信息，例如C盘：\\.\C: |
bool getDiskDesc(int index)
{TCHAR szDrvName[MAX_PATH] = _T("");_stprintf_s<MAX_PATH>(szDrvName, _T("\\\\.\\PhysicalDrive%d"), index);HANDLE hDevice = NULL;try{hDevice = CreateFile(szDrvName, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, NULL, NULL);if (hDevice == INVALID_HANDLE_VALUE){return false;}DWORD dwOutBytes = 0;STORAGE_PROPERTY_QUERY Query;Query.PropertyId = StorageDeviceProperty;Query.QueryType = PropertyStandardQuery;std::string buf(1024, 0);BOOL bResult = ::DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, &Query, sizeof(Query), (char *)buf.data(), buf.capacity() - 1, &dwOutBytes, NULL);if (bResult){PSTORAGE_DEVICE_DESCRIPTOR pDevDesc = (PSTORAGE_DEVICE_DESCRIPTOR)buf.data();if (pDevDesc->Size >= buf.capacity()){buf.resize(pDevDesc->Size + 1);bResult = ::DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, &Query, sizeof(Query), (char *)buf.data(), buf.capacity() - 1, &dwOutBytes, NULL);if (!bResult){CloseHandle(hDevice);return false;}pDevDesc = (PSTORAGE_DEVICE_DESCRIPTOR)buf.data();}STORAGE_BUS_TYPE bsutype = pDevDesc->BusType;//char *SerialNumber = &buf[pDevDesc->SerialNumberOffset];//char *Vendor = &buf[pDevDesc->VendorIdOffset];if (pDevDesc->ProductIdOffset > 0){char *ProductId = &buf[pDevDesc->ProductIdOffset];printf("DISK pId:%s,type:%d\r\n", ProductId, bsutype);}CloseHandle(hDevice);return true;}}catch (...){}CloseHandle(hDevice);return false;
}
枚举所有物理驱动器信息：
int nindex = 0;while (getDiskDesc(nindex++)){};
type 7:表示usb设备
