IDebugModule3::GetSymbolInfo 

If the method succeeds, it returns S_OK; otherwise, it returns an error code.

Note
The returned string (in the MODULE_SYMBOL_SEARCH_INFO structure) could be empty even if S_OK is returned. In this case, there was no search information to return.

If the bstrVerboseSearchInfo field of the MODULE_SYMBOL_SEARCH_INFO structure is not empty, then it contains a list of paths searched and the results of that search. The list is formatted with a path, followed by ellipses ("..."), followed by the result. If there is more than one path result pair, then each pair is separated by a "\r\n" (carriage-return/linefeed) pair. The pattern looks like this:

<path>...<result>\r\n<path>...<result>\r\n<path>...<result>

Note that the last entry does not have a \r\n sequence.

In this example, this method returns three paths with three different search results. Each line is terminated with a carriage-return/linefeed pair. The example output just prints the search results as a single string.

Note
A status result is everything immediately following the "..." up to the end of the line.

void ShowSymbolSearchResults(IDebugModule3 *pIDebugModule3)
{
    MODULE_SYMBOL_SEARCH_INFO ssi = { 0 };
    HRESULT hr;
    hr = pIDebugModule3->GetSymbolInfo(SSIF_VERBOSE_SEARCH_INFO,&ssi);
    if (SUCCEEDED(hr)) {
        CComBSTR searchInfo = ssi.bstrVerboseSearchInfo;
        if (searchInfo.Length() != 0) {
            std::wcout << (wchar_t *)(BSTR)searchInfo;
            std::wcout << std::endl;
        }
    }
}

Sample Output

c:\symbols\user32.pdb... File not found.
c:\winnt\symbols\user32.pdb... Version does not match.
\\symbols\symbols\user32.dll\0a8sd0ad8ad\user32.pdb... Symbols loaded.

Reference