win10 通过PID和VID，枚举USB设备，然后打开，读写，最后关闭设备。

可以使用Windows API函数来实现。以下是一个简单的示例代码：

#include <Windows.h>
#include <cstdio>

int main()
{
    // 枚举USB设备
    GUID guid;
    HDEVINFO hDevInfo;
    SP_DEVICE_INTERFACE_DATA devInterfaceData;
    SP_DEVINFO_DATA devInfoData;
    DWORD dwSize, dwType, dwMemberIndex = 0;
    char szDeviceInstanceID[MAX_DEVICE_ID_LEN];
    ZeroMemory(&guid, sizeof(GUID));
    guid = GUID_DEVINTERFACE_USB_DEVICE;
    hDevInfo = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);
    if (hDevInfo == INVALID_HANDLE_VALUE) {
        printf("SetupDiGetClassDevs failed (%d)\n", GetLastError());
        return 1;
    }
    devInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
    while (SetupDiEnumDeviceInterfaces(hDevInfo, NULL, &guid, dwMemberIndex, &devInterfaceData)) {
        devInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
        if (SetupDiGetDeviceInterfaceDetail(hDevInfo, &devInterfaceData, NULL, 0, &dwSize, NULL)) {
            PSP_DEVICE_INTERFACE_DETAIL_DATA pInterfaceDetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)LocalAlloc(LPTR, dwSize);
            if (pInterfaceDetailData) {
                pInterfaceDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
                if (SetupDiGetDeviceInterfaceDetail(hDevInfo, &devInterfaceData, pInterfaceDetailData, dwSize, NULL, &devInfoData)) {
                    if (SetupDiGetDeviceInstanceId(hDevInfo, &devInfoData, szDeviceInstanceID, MAX_DEVICE_ID_LEN, NULL)) {
                        // 打开设备
                        HANDLE hDevice = CreateFile(szDeviceInstanceID, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
                        if (hDevice != INVALID_HANDLE_VALUE) {
                            // 读写操作
                            DWORD dwBytesWritten;
                            BYTE buffer[256];
                            if (WriteFile(hDevice, buffer, sizeof(buffer), &dwBytesWritten, NULL)) {
                                // 写操作成功
                            }
                            DWORD dwBytesRead;
                            if (ReadFile(hDevice, buffer, sizeof(buffer), &dwBytesRead, NULL)) {
                                // 读操作成功
                            }
                            // 关闭设备
                            CloseHandle(hDevice);
                        }
                    }
                }
                LocalFree(pInterfaceDetailData);
            }
        }
        dwMemberIndex++;
    }
    SetupDiDestroyDeviceInfoList(hDevInfo);

    return 0;
}

需要注意的是，使用该代码需要管理员权限。另外，代码仅用于演示如何枚举、打开、读写、关闭USB设备，实际应用时需要根据具体情况进行改写和完善。