I am having problems with my “Toggle Completion Mode” under the Edit->Intellisense tab in Visual Studio 2010 Professional. The picture describes it quite well.

The completion mode works fine in C#.
Please help.
Thank you in advance!
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There is no possibility to turn on suggestion mode on C++ IntelliSense (both in VS 2010 and 2012).
MSDN Library (for VS 2010) says:
It was reported (link) as a bug in VS 2012 RTM and the answer from Microsoft was:
If you’re annoyed by inserting unwanted code after pushing space when you forget to press ESC you can make the member’s list show up only after pressing ctrl+space (or alt+right arrow). In order to do that go to
Tools -> Options -> Text Editor -> C/C++ -> Generaland uncheckAuto list members.