Reading the Registry

[cpaige]

I'm trying to read the registry using the API RegEnumValue<br>It seems to do really strange things. It only returns half the values or just one.&nbsp;&nbsp;All the other values it returns a ERROR_MORE_DATE.&nbsp;&nbsp;&nbsp;I have tried enlarging the buffer to 2k and I have also retreived the biggest value and dynamically sized the buffer based on that.<br><br>Has anyone ever run into this problem? Does any one have a sample code performing the same operation?&nbsp;&nbsp;I'm trying to read the keys&nbsp;&nbsp;&quot;HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run&quot;<br>and <br>HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices<br>&nbsp; <p>Clayton T. Paige<br><a href=mailto:cpaige@home.com>cpaige@home.com</a><br><a href=

http://members.home.com/cpaige>Purple

Snail</a><br>Clayton T. Paige<br>
Programmer Extraordinaire <br>
========================================================<br>
"Who General Failure? and Why is he reading my disk drive?"

 

[palbano]

Dear Clayton,<br><br>All that stuff is neatly wrapped up for you in the ATL CRegKey class. It is extremely lite and fast. Please look into using it for registry operations.<br><br>Good luck<br>-pete

 

[cpaige]

Thanks for the info, but it doesn't help <br><br>I looked at the methods of CRegKey and found that it doesn't have one to retrieve a listing of values for a key. The RegEnumValue provides a list(with multiple calls) of all the values for a key.&nbsp;&nbsp;CRegKey doesn't provide this service.<br><br>I'm trying to get a listing of all the Run and Runservice Programs.<br><br>Do you have any other ideas? <p>Clayton T. Paige<br><a href=mailto:cpaige@home.com>cpaige@home.com</a><br><a href=

http://members.home.com/cpaige>Purple

Snail</a><br>Clayton T. Paige<br>
Programmer Extraordinaire <br>
========================================================<br>
"Who General Failure? and Why is he reading my disk drive?

 

[palbano]

Dear Clayton,<br><br>I apologize for the incomplete post earlier. Here is some sample code that uses RegEnumValue.<br><br>NOTE: sysformatMsg() is my helper function that wraps the FormatMessage() API for system error message. I left it in here to make the code more readable.<br><br>CListBox& _oList = (CListBox&)*((CListBox*)GetDlgItem(MYLIST));<br> CString buf;<br> const int BUF_SIZE = 255;<br> DWORD dwNameLen, dwReserved, dwType, dwDataLen;<br> dwNameLen = dwDataLen = BUF_SIZE;<br> int nIndex = 0;<br> CRegKey okey;<br> LONG lRet = okey.Open( HKEY_LOCAL_MACHINE, &quot;Software\\Microsoft\\WBEM&quot;<br><br> if ( ERROR_SUCCESS != lRet){<br> sysformatMsg( buf, lRet);<br> AfxMessageBox( buf);<br> } <br><br> TCHAR pName[BUF_SIZE];<br> BYTE pData[BUF_SIZE];<br> ZeroMemory( pData, BUF_SIZE);<br><br> while ( ERROR_SUCCESS == (lRet =<br> RegEnumValue( okey, nIndex++, pName, &dwNameLen,<br> &dwReserved, &dwType, pData, &dwDataLen)) ){<br><br> switch( dwType){<br> case REG_EXPAND_SZ:<br> buf.Format(&quot;%s, %s&quot;, pName, (LPSTR)pData);<br> break;<br> default:<br> buf.Format(&quot;%s, DATA&quot;, pName);<br> break;<br> }<br> _oList.AddString(buf);<br> ZeroMemory( pData, BUF_SIZE);<br> dwNameLen = dwDataLen = BUF_SIZE;<br> }<br><br> if (ERROR_SUCCESS != lRet){<br> sysformatMsg( buf, lRet);<br> AfxMessageBox( buf);<br> }<br><br>Let me know if you have any questions.<br><br>Good luck<br>-pete<br><br>

 

[cpaige]

Thanks for the code sample<br><br>It has some ideas that I might use.&nbsp;&nbsp;I did find the soultion on my own.&nbsp;&nbsp;I wasn't setting the size of the buffer valriable back to the max after I excuted the RegEnumValue.&nbsp;&nbsp;That gave the API an incorrect size and it didn't think there was enough space. <br><br>Thanks you for your help <p>Clayton T. Paige<br><a href=mailto:cpaige@home.com>cpaige@home.com</a><br><a href=

http://members.home.com/cpaige>Purple

Snail</a><br>Clayton T. Paige<br>
Programmer Extraordinaire <br>
========================================================<br>
"Who General Failure? and Why is he reading my disk drive?

 

[andyUK]

I have been trying to access the registry in visual c++. Would you be able to send me the code you used to a do it?

Hope you can help


Andrew Gibson
Andy@relay.ie

 

[cpaige]

Hey!

It has been almost a year since I was working with the registry ,so I don't remember everything I have done. I'll go look through my code and send it your way if I find it.

Clay :^) Clayton T. Paige
cpaige@home.com

http://members.home.com/cpaige

Clayton T. Paige

Programmer Extraordinaire

========================================================

&quot;Who is General Failure? and Why is he reading my disk drive?&quot;