In MFC programs, a [CMemoryException Class](../../mfc/reference/cmemoryexception-class.md) is thrown if insufficient memory exists. In ATL programs, a [CAtlException](../../atl/reference/catlexception-class.md) is thrown. This function is normally used to return strings for Automation.

Commonly, if this string is passed to a COM function as an [in] parameter, then this requires the caller to free the string. This can be done by using [SysFreeString](https://msdn.microsoft.com/library/windows/desktop/ms221481.aspx), as described in the Windows SDK. For more information, see [Allocating and Releasing Memory for a BSTR](../../atl-mfc-shared/allocating-and-releasing-memory-for-a-bstr.md).

For more information about OLE allocation functions in Windows, see [SysAllocString](https://msdn.microsoft.com/library/windows/desktop/ms221458.aspx) in the Windows SDK.

The following example demonstrates the use of `CStringT::AllocSysString`.

To use MSBuild most effectively on the command line, it helps to know which properties and targets are useful and relevant. Most properties and targets help implement the Visual C++ build system, and consequently are not relevant to the user. This section describes some worthwhile user-oriented properties and targets.

The `PlatformToolset` property determines which Visual C++ toolset is used in the build. By default, the current toolset is used. When this property is set, the value of the property is concatenated with literal strings to form the path of a directory that contains the property and target files that are required to build a project for a particular platform. The platform toolset must be installed to build by using that platform toolset version.

The *command line* command formed from input in the **Property Pages** dialog box returned an error code, but no information appears in the **Output** window.

Possible reasons for this error include:

- Your project depends on ATL Server. Beginning in Visual Studio 2008, ATL Server is no longer included as part of Visual Studio, but has been released as a shared-source project at CodePlex. To download the ATL Server source code and tools, go to [ATL Server Library and Tools](http://go.microsoft.com/fwlink/?LinkID=81979).