Basically this whole program depends on the registry. The registry in Windows holds the key to each and every aspects of the Windows Operating System, but only if you find them in registry and use them. 

   Now , let us see how to manually Disable and Enable the drives using the keys in the Registry.

1.Disable/Enable Drives:

   The key for the Number of drives in the registry is available at,

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

    The  value 'NoDrives' :The value of this data will depend on the no of drives in your system.

 Let us take an example. If you system contain A: C: D: drives, and you want to disable C drive the entry in registry would be 2 ^int(65-'C')  , and if you want to disable A: and D: the registry value is 2^{((65-int('A'))+(65-int('d')))}.This is a little complicated. The DLL, I use contains the wrapper for this , so just use them.

2.Disable Control panel:

           The Key Holding data to Show or Hide Control Panel is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

and Value Name is "NoControlPanel"  if it value is 0 you can see Control Panel and if 1 you can't see control panel. 

3. Disable Change  Password:

          This option you are going to see when u press (CTRL+ALT+DEL) in WIN2000 and above

  and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System

and Value Name is "DisableChangePassword"  if its value is 0 you can see Change Password Option Enabled and if 1 ChangePassword Option is disabled.

4.Disable Search:

          This option you are going to see in Start menu  and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoFind"  if its value is 0 you can see this Option Enabled and if 1 you can't see that option.

5.Disable RUN:

   This option is available in Start menu  and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoRun"  if its value is 0 you can see this Option Enabled and if 1 you will not be able to see this Windows' Run program option.

6.Disable ShutDown:

   This option is available in Start menu  and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoClose"  if its value is 0 you can see this Option Enabled and if 1 you can't see that option.

7.Disable NetworkAccess:

   This option is available on the Desktop and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoNetHood"  if its value is 0 you can see this Network Neighborhood icon and if 1 it will be invisible.

8.Disable TaskBar Setting:

   This option you are going to see at Desktop and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoSetTaskBar"  if its value is 0 you can see this Option Enabled and if 1 you can't see that option.

9.Disable RegEdit:

   This is Registry Editor tool HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and Value Name is "DisableRegistryTools"  if it value is 0 you can see this Option Enabled and if 1 you can't see that option.

10.Disable TaskManager:

   This option you are going to see usually in windows 2000 and above when you press (CTRL+ALT_DEL), its Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and Value Name is "DisableTaskMgr"  if its value is 0 you can see this Option Enabled and if 1 you can't see that option.

11.Disable Context Menu:

   This option you are going to see is accessible by a Right click on DESKTOP. This is what is known as Context menu and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoViewContextMenu"  if its value is 0 you can see?this context menu and if 1 you can't see that option.

12. Disable Desktop icon:

   This option applies all the icon present on desktop ,it key is HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer and Value Name is "NoDesktop"  if its value is 0 you can see?this icons and if 1 all icons will be invisible.

13.Disable Display Properties:

   This option you are going to see is accessible by a Right click on DESKTOP and click on Properties menu item and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System. The Value Name is "NoDispCPL"  if its value is 0 you can see?this Option Enabled and if 1 you can't see that option.

14.Disable Background Tab:

    This option you are going to see in Display Control Panel and it Key is HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and Value Name is "NoDispBackgroundPage"  if its value is 0 you can see?this Option Enabled and if 1 you can't see that option.

15.Disable ScreenSaver Tab:

     This option you are going to see In Display Control Panel and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and Value Name is "NoDispScrSavPage"  if its value is 0 you can see?this Option Enabled and if 1 you can't see that option.

16.Disable Setting And Plus Tab:

     This option you are going to see In Display Control Panel and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and Value Name is "NoDispSettingsPage"  if its value is 0 you can see?this Option Enabled and if 1 you can't see that option.

17.Disable Appearance Tab:

     This option you are going to see In Display Contral Panel and it Key is

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System and Value Name is "NoDispAppearancePage"  if its value is 0 you can see?this Option Enabled and if 1 you can't see that option.

I think I have explained all the functionalities of the program. Remember one thing. Some of these options show effect only when the computer is restarted.

Using this Program:

• Just Check on the Restriction you want to apply and click apply, the restriction are applied.
• Remember most of restriction after applying and disapplying need Restarting of your computer ok.

Registry Class - CNMPDrivesClass

The Declaration of the Class is this ->

class AFX_EXT_CLASS CNMPDrivesClass  

{  

 

   CString NMPChangeToBinary(DWORD dwVar);



public:



  void SendTypeOFDrives(CUIntArray &Stat);

  void SendStatusOFDrives(CUIntArray &stat);

  BOOL GetDrivesVolume(CStringArray &VolumeName,CDWordArray SerialNumber,CStringArray &FileSystem);

 void NMPReturnNoOfDrives(CUIntArray &NoOfDrives);



  void NMPDisableLocalDrives(CUIntArray &a);

  

 CRegKey m_LocalKey;

 CNMPDrivesClass();

 CNMPDrivesClass(CString SID);

 CNMPDrivesClass(BOOL bUser);

 virtual ~CNMPDrivesClass();

 

private:

 CRegKey f;



};

Now let me explain working of each function

 1.  void SendTypeOFDrives(CUIntArray &Stat);

2.void SendStatusOFDrives(CUIntArray &stat);

   This function will tell status of drives either it Enabled or disabled. This argument contains the Drives Int, which are disabled eg int(65) stand for A, int (66) for B and so on.

3.  BOOL GetDrivesVolume(CStringArray &VolumeName,CDWordArray SerialNumber,CStringArray &FileSystem);

 4.void NMPReturnNoOfDrives(CUIntArray &NoOfDrives);

5.  void NMPDisableLocalDrives(CUIntArray &a);
      

 Now if you want to disable A: and C:,  just ADD to a.Add(A),a.Add(C) (Because a is Array Class) and call the function.