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    <p>Here's a C++ version I just had to write. Taken directly from ICR's C# version.</p> <pre><code>void PrintString(CString string) { std::wcout &lt;&lt; static_cast&lt;LPCTSTR&gt;(string) &lt;&lt; endl; } CString GetClassesRootKeyValue(const wchar_t * keyName) { HKEY hkey; TCHAR keyNameCopy[256] = {0}; _tcscpy_s(keyNameCopy, 256, keyName); BOOL bResult = SUCCEEDED(::RegOpenKey(HKEY_CLASSES_ROOT, keyNameCopy, &amp;hkey)); CString hkeyValue = CString(""); if (bResult) { TCHAR temporaryValueBuffer[256]; DWORD bufferSize = sizeof (temporaryValueBuffer); DWORD type; bResult = SUCCEEDED(RegQueryValueEx(hkey, _T(""), NULL, &amp;type, (BYTE*)temporaryValueBuffer, &amp;bufferSize)) &amp;&amp; (bufferSize &gt; 1); if (bResult) { hkeyValue = CString(temporaryValueBuffer); } RegCloseKey(hkey); return hkeyValue; } return hkeyValue; } int _tmain(int argc, TCHAR* argv[], TCHAR* envp[]) { int nRetCode = 0; // initialize MFC and print and error on failure if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)) { // TODO: change error code to suit your needs _tprintf(_T("Fatal Error: MFC initialization failed\n")); nRetCode = 1; } else { CString dwgAppName = GetClassesRootKeyValue(_T(".dwg")); PrintString(dwgAppName); dwgAppName.Append(_T("\\shell\\open\\command")); PrintString(dwgAppName); CString trueViewOpenCommand = GetClassesRootKeyValue(static_cast&lt;LPCTSTR&gt;(dwgAppName)); PrintString(trueViewOpenCommand); // Shell open command usually ends with a "%1" for commandline params. We don't want that, // so strip it off. int firstParameterIndex = trueViewOpenCommand.Find(_T("%")); PrintString(trueViewOpenCommand.Left(firstParameterIndex).TrimRight('"').TrimRight(' ')); cout &lt;&lt; "\n\nPress &lt;enter&gt; to exit..."; getchar(); } } </code></pre>
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    1. POHow to find the installation directory of a third-party application, such as Google Earth, using C#?
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    1. USHawkeye Parker
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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