[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

Looking Within the Windows Registry

Posted on 2002-03-10
2
Medium Priority
?
257 Views
Last Modified: 2010-05-18
I am needing to determine (boolean) if a certain program (such as Internet Explorer 5.0) is listed in the Windows registry.  How is this done?  I found a function RegQueryValue() within help but am not sure if this is the correct function or not.

Please list #include files and short code example.  Also, how do I differentiate between  different versions of the same software and look for the latest version?  Is there a difference between the registries for NT and 98/XP that I need to consider in the code?
0
Comment
Question by:Bilbrey
[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
2 Comments
 
LVL 6

Accepted Solution

by:
Triskelion earned 800 total points
ID: 6855074
Using Win2K, MSVC 5.0
The registry key will be the same in 85/98/NT/2000.


#include <afx.h>

BOOL     IsIeInstalled(void)
{
     HKEY hRegKey = NULL;
     //_tcscpy(szKey, _T("SOFTWARE\\Your Company\\Your Program\\"));
     static     char * szKey = "SOFTWARE\\MICROSOFT\\INTERNET EXPLORER";
     static     char     strVersion[16];
     memset(&strVersion, 0, sizeof(strVersion));
     if (ERROR_SUCCESS != RegOpenKeyEx(HKEY_LOCAL_MACHINE,
          szKey, 0, KEY_QUERY_VALUE, &hRegKey))
          {
          return FALSE;
          }
     DWORD dwType = REG_SZ;
     DWORD     dwLength=(sizeof(strVersion)-1);
     if (ERROR_SUCCESS != RegQueryValueEx(hRegKey, _T("Version"),
          NULL, &dwType, (BYTE*)strVersion, &dwLength))
          {
          return FALSE;
          }
     return TRUE;
}

void main(void)
{
     printf ("Internet Explorer %s installed.", (IsIeInstalled() ? "is" : "is not"));
}
0
 

Author Comment

by:Bilbrey
ID: 6855342
Thanks very much.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

Errors will happen. It is a fact of life for the programmer. How and when errors are detected have a great impact on quality and cost of a product. It is better to detect errors at compile time, when possible and practical. Errors that make their wa…
This article will show you some of the more useful Standard Template Library (STL) algorithms through the use of working examples.  You will learn about how these algorithms fit into the STL architecture, how they work with STL containers, and why t…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

649 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