Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Writing binary values to the Registry

Posted on 2000-04-26
2
Medium Priority
?
316 Views
Last Modified: 2013-11-20
I have to write binary values to the registry, where i store information about my program. Can anyone describe the general procedure of doing this? For example, open the key, write, close it, then read from it, change it.

A link to a good tutorial is cool too.
0
Comment
Question by:Mindo
2 Comments
 
LVL 86

Accepted Solution

by:
jkr earned 200 total points
ID: 2751015
In general, it works like this:

    HANDLE  g_hRegKey;


    // reading...

    DWORD   dwType;
    DWORD   dwSize  =   MAX_PATH;
    BOOL    bRC     =   TRUE;

    g_hRegKey   =   NULL;

    if  (   ERROR_SUCCESS   !=  RegOpenKeyEx    (    HKEY_LOCAL_MACHINE,
                                                     APPLICATION_REGPATH,
                                                     0,
                                                     KEY_ALL_ACCESS,
                                                    &g_hRegKey
                                                )
        )
        {
            DbgReport   (   L"RegOpenKeyEx() failed!!");

            return  (   FALSE);
        }

    dwType  =   REG_BINARY;
    dwSize  =   sizeof  (   g_awcRegUsr);

    if  (   ERROR_SUCCESS   !=  RegQueryValueEx (   g_hRegKey,
                                                    APPLICATION_USRNAME,
                                                    NULL,
                                                    &dwType,
                                                    ( LPBYTE) g_awcRegUsr,
                                                    &dwSize
                                                )
        )  
        {
            DbgReport   (   L"RegQueryValueEx() failed!!");

            bRC =   FALSE;
        }
   
    dwType  =   REG_BINARY;
    dwSize  =   sizeof  (   g_awcRegPwd);

    if  (   ERROR_SUCCESS   !=  RegQueryValueEx (   g_hRegKey,
                                                    APPLICATION_PASSWD,
                                                    NULL,
                                                    &dwType,
                                                    ( LPBYTE) g_awcRegPwd,
                                                    &dwSize
                                                )
        )  
        {
            DbgReport   (   L"RegQueryValueEx() failed!!");

            bRC =   FALSE;
        }


    // writing...

    if  (   ERROR_SUCCESS   !=  RegSetValueEx   (   g_hRegKey,
                                                    APPLICATION_USRNAME,
                                                    NULL,
                                                    REG_BINARY,
                                                    ( LPBYTE) g_awcRegUsr,
                                                    sizeof  (   g_awcRegUsr)
                                                )
        )   bRC =   FALSE;

    if  (   ERROR_SUCCESS   !=  RegSetValueEx   (   g_hRegKey,
                                                    APPLICATION_PASSWD,
                                                    NULL,
                                                    REG_BINARY,
                                                    ( LPBYTE) g_awcRegPwd,
                                                    sizeof  (   g_awcRegPwd)
                                                )
        )   bRC =   FALSE;


Feel free to ask if you need more information!
0
 
LVL 2

Author Comment

by:Mindo
ID: 2781950
Thank you very much!
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction: Load and Save to file, Document-View interaction inside the SDI. Continuing from the second article about sudoku.   Open the project in visual studio. From the class view select CSudokuDoc and double click to open the header …
If you use Adobe Reader X it is possible you can't open OLE PDF documents in the standard. The reason is the 'save box mode' in adobe reader X. Many people think the protected Mode of adobe reader x is only to stop the write access. But this fe…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
As many of you are aware about Scanpst.exe utility which is owned by Microsoft itself to repair inaccessible or damaged PST files, but the question is do you really think Scanpst.exe is capable to repair all sorts of PST related corruption issues?
Suggested Courses
Course of the Month12 days, 13 hours left to enroll

578 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question