Solved

RegSetValueEx

Posted on 1998-09-20
7
460 Views
Last Modified: 2013-12-03
I have created a key "Fire" using RegCreateKeyEx.
This "Fire" key is supposed to have several data fields.

How do i create DWORD data fields for this "Fire" and write integers to them?
Below is my code trying to write an integer 5 to a "Datafield1" with no success.
Thanx.

HKEY KeyOpened;
DWORD Disp ;

if (RegCreateKeyEx( HKEY_CURRENT_USER,
   "Software\\MYCompany\\MYModule\\Fire",
   0,
   NULL,
   REG_OPTION_NON_VOLATILE,
   KEY_ALL_ACCESS,
   NULL,
   &KeyOpened,
   &Disp)  == ERROR_SUCCESS)
{
   RegSetValueEx( KeyOpened,
       "DataField1",
       0,
       REG_DWORD,
       (BYTE*)5,
       sizeof(DWORD) ;

   RegCloseKey(KeyOpened);
}
0
Comment
Question by:nancytan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
7 Comments
 

Author Comment

by:nancytan
ID: 1414601
Edited text of question
0
 

Author Comment

by:nancytan
ID: 1414602
Edited text of question
0
 

Author Comment

by:nancytan
ID: 1414603
Edited text of question
0
Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

 

Author Comment

by:nancytan
ID: 1414604
Edited text of question
0
 
LVL 8

Expert Comment

by:MikeP090797
ID: 1414605
Try without casting the 5, just pass it as it is, or store it in a DWORD first, and pass a reference to it
DWORD dw=5
RegSetValueEx(..., &dw)
0
 
LVL 22

Accepted Solution

by:
nietod earned 50 total points
ID: 1414606
DWORD NewValue = 5

RegSetValueEx( KeyOpened,
          "DataField1",
          0,
          REG_DWORD,
          (BYTE*) &NewValue,
          sizeof(DWORD) ;
0
 
LVL 22

Expert Comment

by:nietod
ID: 1414607
If this is C++ (not c), you should also be able to do

RegSetValueEx( KeyOpened,
          "DataField1",
          0,
          REG_DWORD,
          (BYTE*) &DWORD(5),
          sizeof(DWORD) ;

the other way is a little cleaner and easier to understand, however, this way doesn't require you to define an extra DWORD variable.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

If you have ever found yourself doing a repetitive action with the mouse and keyboard, and if you have even a little programming experience, there is a good chance that you can use a text editor to whip together a sort of macro to automate the proce…
A theme is a collection of property settings that allow you to define the look of pages and controls, and then apply the look consistently across pages in an application. Themes can be made up of a set of elements: skins, style sheets, images, and o…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…

735 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