🚀 go-pugleaf

"Fernando Alvarez" <ferjat@lycos.es> wrote in message
news:3eb2faf3$1@newsgroups.borland.com...

>
registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\KA
ZAA");

What is the return value of DeleteKey()?  If false, what is the return value
of the Win32 API function GetLastError()?


Gambit

How can I use GetLastError?
The return value of DeleteKey is 0. result=0;
The code now is:

  include <registry.hpp>
  int result;
    TRegistry *registry = new TRegistry();
    registry->RootKey = HKEY_LOCAL_MACHINE;

result=registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\
Run\\KAZAA");
    delete registry;

Thank you Gambit.

"Remy Lebeau (TeamB)" <gambit47@yahoo.com> escribi� en el mensaje
news:3eb2fbdb$1@newsgroups.borland.com...
>
> "Fernando Alvarez" <ferjat@lycos.es> wrote in message
> news:3eb2faf3$1@newsgroups.borland.com...
>
> >
>
registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\KA
> ZAA");
>
> What is the return value of DeleteKey()?  If false, what is the return
value
> of the Win32 API function GetLastError()?
>
>
> Gambit
>
>
>

"Fernando Alvarez" <ferjat@lycos.es> wrote in message
news:3eb30123@newsgroups.borland.com...
> How can I use GetLastError?

Just call it.  It is a global function:

    if(
!registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\K
AZAA") )
        result = GetLastError();


Gambit

Now result=5.

"Remy Lebeau (TeamB)" <gambit47@yahoo.com> escribi� en el mensaje
news:3eb302cb$1@newsgroups.borland.com...
>
> "Fernando Alvarez" <ferjat@lycos.es> wrote in message
> news:3eb30123@newsgroups.borland.com...
> > How can I use GetLastError?
>
> Just call it.  It is a global function:
>
>     if(
>
!registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\K
> AZAA") )
>         result = GetLastError();
>
>
> Gambit
>
>

"Fernando Alvarez" <ferjat@lycos.es> wrote in message
news:3eb30488$1@newsgroups.borland.com...
> Now result=5.

As I thought, DeketeKey() is failing.  Error 5 is ERROR_ACCESS_DENIED.  In
other words, you tried to delete a key you don't have access to.

What OS are you trying this under?  If NT/Win2K/XP, are you trying to do
this under a user account with admin rights?  If not, then that is probably
why it is failing.


Gambit

I am the administrator user in windows XP SP1. I have opened regedt32.exe
and I have all the permissions. I can delete, write, change, etc manually in
the registry. Then, I have done a test. I have wrotten a new key in
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run with name
Hello and value nothing.
So, I have changed my code and it doesn�t work again. I am using BCB 5. This
is my code:

int result;
        TRegistry *registry = new TRegistry();
        registry->RootKey = HKEY_LOCAL_MACHINE;

if(!registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run
\\Hello"))
                result = GetLastError();
        delete registry;

I think the problem is in DeleteKey. I might have to open the key and then
just delete it, or I dont�t know, to do something different. Any idea? Ah,
a last thing, the type of the key is REG_SZ. Is this important?

Thank you for your help.

"Remy Lebeau (TeamB)" <gambit47@yahoo.com> escribi� en el mensaje
news:3eb30813$1@newsgroups.borland.com...
>
> "Fernando Alvarez" <ferjat@lycos.es> wrote in message
> news:3eb30488$1@newsgroups.borland.com...
> > Now result=5.
>
> As I thought, DeketeKey() is failing.  Error 5 is ERROR_ACCESS_DENIED.  In
> other words, you tried to delete a key you don't have access to.
>
> What OS are you trying this under?  If NT/Win2K/XP, are you trying to do
> this under a user account with admin rights?  If not, then that is
probably
> why it is failing.
>
>
> Gambit
>
>

"Fernando Alvarez" <ferjat@lycos.es> wrote in message
news:3eb39873@newsgroups.borland.com...
>if(!registry->DeleteKey("\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Ru
n
\\Hello"))

Hi, I use the following as a function ;


bool DelRegKey(String KeyToOpen, String  KeyToDelete,void * RootKeyToOpen =
HKEY_CLASSES_ROOT);


bool DelRegKey(String  KeyToOpen, String KeyToDelete,void* RootKeyToOpen)
{
bool RetVal = false;
TRegistry *thisreg = new TRegistry;
try{
thisreg->RootKey = RootKeyToOpen;  //default if not supplied is
HKEY_CLASSES_ROOT

if (thisreg->OpenKey(KeyToOpen,false))
    {thisreg->DeleteKey(KeyToDelete);
     RetVal = true;}
else
    RetVal = false;
}
__finally
{
delete thisreg;
return RetVal;}
}


and then call it like this:
DelRegKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run","Hello");

--- I have not tested this but it really ought to work

Chris

DelRegKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run","Hello",HKEY_L
OCAL_MACHINE);


Oops, slight correction, added HKEY_LOCAL_MACHINE to override default.

Fernando Alvarez wrote:
> Then, I have done a test. I have wrotten a new key in
> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
> with name Hello and value nothing.
> So, I have changed my code and it doesn�t work again.

a) 'Hello' is an value - not a key.

   So DeleteKey() is the wrong method.
   Open the key and delete the value.

b) You don't have KEY_ALL_ACCESS on the key.

   Specify only the required rights
   on creating the Registry object.

- nico

Thank You Gambit, Thank You Chris and Thank You Nico Bendlin.

My error was that Kazaa and Hello isn?t a key , is a value, so I must use
DeleteValue. Now it works perfectly. I have seen your code Chris and it is
very interesting. I will use it.

Thank you very much.

"Nico Bendlin" <nicode@net.gmx> escribi� en el mensaje
news:3eb3b192@newsgroups.borland.com...
> Fernando Alvarez wrote:
> > Then, I have done a test. I have wrotten a new key in
> > HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
> > with name Hello and value nothing.
> > So, I have changed my code and it doesn�t work again.
>
> a) 'Hello' is an value - not a key.
>
>    So DeleteKey() is the wrong method.
>    Open the key and delete the value.
>
> b) You don't have KEY_ALL_ACCESS on the key.
>
>    Specify only the required rights
>    on creating the Registry object.
>
> - nico
>