Windows下隐藏盘符

在windows下，有时我们需要隐藏某个分区
当有隐藏磁盘分区的需求时可以通过修改注册表来实现在不删除盘符的情况下使分区不在资源管理器中显示,但不会修改盘符以及影响分区中的数据，仅仅只是在资源管理器中不再显示,可以理解为视觉上的隐藏
适合在保证磁盘分区能正常使用的情况下让电脑使用者看不见某一些分区

win+r运行regedit打开注册表管理器
找到：计算机

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

选中Explorer右键选新建选DWORD(32)，新建一个注册表NoDrives,当然如果你分区超过32个的话,选64位(其实我还在想盘符A~Z可分配,超过这个数了咋整)

当然我们也可以通过代码来实现：
假如我们要隐藏A盘

#include "stdafx.h"
#include <windows.h>
#include <IPHlpApi.h>
#pragma comment(lib,"IPHlpApi.lib")
#include <WinNetWk.h>

#include <Shlobj.h>
#include <dbt.h>
#pragma comment(lib,"Mpr.lib")
#pragma comment(lib, "shlwapi.lib")


BOOL ReadRegistryDword(LPCTSTR lpSubKey, LPCTSTR lpName, DWORD *dwValue)
{
    HKEY hKey = 0;
    DWORD dwSize = sizeof(*dwValue);
    DWORD dwType;
    LONG lStatus;
    SECURITY_ATTRIBUTES sa;
    sa.nLength = sizeof(SECURITY_ATTRIBUTES);
    sa.bInheritHandle = TRUE;
    sa.lpSecurityDescriptor = NULL;

    lStatus = RegOpenKeyEx(HKEY_CURRENT_USER, lpSubKey, 0, KEY_READ, &hKey);
    if (lStatus != ERROR_SUCCESS)
    {
        SetLastError(lStatus);
        return FALSE;
    }

    lStatus = RegQueryValueEx(hKey, lpName, NULL, &dwType, (BYTE *)dwValue, &dwSize);
    if (lStatus != ERROR_SUCCESS)
    {
        RegCloseKey(hKey);
        SetLastError(lStatus);
        return FALSE;
    }

    RegCloseKey(hKey);
    return dwType == REG_DWORD;
}

BOOL WriteRegistryDword(LPCTSTR lpSubKey, LPCTSTR lpName, DWORD dwValue)
{
    HKEY hKey = 0;
    DWORD dwDisp;
    LONG lStatus;
    SECURITY_ATTRIBUTES sa;
    sa.nLength = sizeof(SECURITY_ATTRIBUTES);
    sa.bInheritHandle = TRUE;
    sa.lpSecurityDescriptor = NULL;

    lStatus = RegCreateKeyEx(HKEY_CURRENT_USER, lpSubKey, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, &sa, &hKey, &dwDisp);
    if (lStatus != ERROR_SUCCESS)
    {
        SetLastError(lStatus);
        return FALSE;
    }

    lStatus = RegSetValueEx(hKey, lpName, 0, REG_DWORD, (BYTE *)&dwValue, sizeof dwValue);
    if (lStatus != ERROR_SUCCESS)
    {
        RegCloseKey(hKey);
        SetLastError(lStatus);
        return FALSE;
    }

    RegCloseKey(hKey);
    return TRUE;
}


void HideVolume(int nDriveNo)
{
    DWORD dwResult;
    DEV_BROADCAST_VOLUME* p01 = new DEV_BROADCAST_VOLUME;
    p01->dbcv_devicetype = 2;
    p01->dbcv_flags = 0;
    p01->dbcv_size = 20;
    p01->dbcv_unitmask = (1 << nDriveNo);
    char szRoot[] = { (char)(nDriveNo + 'A'), ':', '', 0 };
    SHChangeNotify(SHCNE_DRIVEREMOVED, SHCNF_PATH, szRoot, NULL);
    DWORD dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,
        WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, NULL);
    dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,
        WM_DEVICECHANGE, DBT_DEVICEREMOVECOMPLETE, (LPARAM)p01);
    DWORD value = 0;
    LPCTSTR skey = _T("SoftwareMicrosoftWindowsCurrentVersionPoliciesExplorer");
    if (!ReadRegistryDword(skey, _T("NoDrives"), &value))
    {
        value = 0;
    }
    value |= (1 << nDriveNo);
    WriteRegistryDword(skey, _T("NoDrives"), value);
    SHChangeNotify(SHCNE_DRIVEREMOVED, SHCNF_PATH, szRoot, NULL);
    //DWORD dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, NULL);
    dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVICEREMOVECOMPLETE, (LPARAM)p01);
    delete[] p01;

    SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, LPARAM("Policy"), SMTO_ABORTIFHUNG, 500, &dwResult);
}
void ShowVolume(int nDriveNo)
{
    DWORD dwResult;
    DEV_BROADCAST_VOLUME* p01 = new DEV_BROADCAST_VOLUME;
    p01->dbcv_devicetype = 2;
    p01->dbcv_flags = 0;
    p01->dbcv_size = 20;
    p01->dbcv_unitmask = (1 << nDriveNo);//H
    char szRoot[] = { (char)(nDriveNo + 'A'), ':', '', 0 };
    SHChangeNotify(SHCNE_DRIVEADD, SHCNF_PATH, szRoot, NULL);
    SHChangeNotify(SHCNE_UPDATEDIR, SHCNF_PATH, szRoot, NULL);
    DWORD dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, NULL);
    dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVICEARRIVAL, (LPARAM)p01);
    dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, NULL);

    DWORD value = 0;
    LPCTSTR skey = _T("SoftwareMicrosoftWindowsCurrentVersionPoliciesExplorer");
    if (!ReadRegistryDword(skey, _T("NoDrives"), &value))
    {
        value = 0;
    }
    value &= ~(1 << nDriveNo);
    WriteRegistryDword(skey, _T("NoDrives"), value);
    SHChangeNotify(SHCNE_DRIVEADD, SHCNF_PATH, szRoot, NULL);
    SHChangeNotify(SHCNE_UPDATEDIR, SHCNF_PATH, szRoot, NULL);
    // DWORD dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, NULL);
    dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVICEARRIVAL, (LPARAM)p01);
    dwRecipients = BSM_APPLICATIONS;
    BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_POSTMESSAGE | BSF_FORCEIFHUNG, &dwRecipients,WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, NULL);
    delete[] p01;
    SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, LPARAM("Policy"), SMTO_ABORTIFHUNG, 500, &dwResult);
}


int _tmain(int argc, _TCHAR* argv[])
{
        HideVolume(0);
        return 0;
}

完成以上操作后，需要重启explorer.exe进程或者重启电脑。