Borland C++ .... SetupGetStringField (returning a value from a INF File)

Posted on 2003-11-17
Medium Priority
Last Modified: 2012-06-27

I've used an INF file on our current application to store some parameters.
However, we appear to be experiencing problems with the SetupGetStringField function.
i.e. it doesn't appear to be returning anything.

I've used SetupOpenInfFile to open the INF file and SetupFindFirstLine to find the first line which contains the relevant section and key.
However SetupGetStringField  doesn't appear to be working.

Can you have a look at the code to see what the problem is and/or suggest a different approach which be easier?

hope you can help.

Cheers, weslondon


        DWORD dwResult;
        HINF hInf;                     //variable to hold the INF handle
        UINT ErrorLine;                //variable to hold errors returned

        INFCONTEXT aContext = {0};
        char *  aReturnBuffer;
        DWORD aReturnBufferSize;
        PDWORD aRequiredSize;

        BOOL aLineFound = 0;
        BOOL aStrEntryFound = 0;

        strcpy (aInfName, "C:/Inf.inf");

        hInf = SetupOpenInfFile (
               &ErrorLine);           //line number of the syntax error

        if (hInf == INVALID_HANDLE_VALUE)
            return NULL;
            // Find correct line - using aSection and aKey

            aLineFound = SetupFindFirstLine(
                hInf,              // handle to an INF file
                aSection,      // section in which to find a line
                aKey,              // optional, key to search for
                &aContext      // context of the found line

            if (aLineFound)
                // Extract value using &aContext

                aStrEntryFound = SetupGetStringField(
                &aContext,                    // context of the INF file
                1,                            // index of the field to get
                aReturnBuffer,            // optional, receives the field
                aReturnBufferSize,            // size of the provided buffer
                NULL                      // optional, buffer size needed
            if (aStrEntryFound)
                return aReturnBuffer;


N.B aStrEntryFound is false
(i.e. nothing returned in aReturnBuffer)

Question by:weslondon
  • 2
LVL 86

Expert Comment

ID: 9765840
You are not specifying a valid return buffer - use

       char *  aReturnBuffer [ 1024]; // or whatever size is appropriate
       DWORD aReturnBufferSize = sizeof ( aReturnBuffer);

The docs state: "ReturnBuffer
This optional parameter points to a caller-supplied buffer "
LVL 86

Accepted Solution

jkr earned 2000 total points
ID: 9765849
Ooops, sorry, that should read

      char  aReturnBuffer [ 1024]; // or whatever size is appropriate
      DWORD aReturnBufferSize = sizeof ( aReturnBuffer);

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

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…
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

622 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