The IntelliSense Quick info is a feature consisting of a pop-up text box that displays a description of an identifier when the user hovers the mouse above the identifier or places the edit caret in the identifier and selects Quick Info from the IntelliSense menu. Set the QuickInfo property to zero to disable quick info as it is enabled by default. Quick info works when you have member completion implemented, but even when the language does not have member selection, you still need to call the startName method at every identifier expression (see How-to: Add Member Completion for a discussion and example of the startName method).
注意
You must provide your own lex/yacc-compatible tools; these tools are not included in the VS SDK and the language service project will not build without them. To build the language service using the sample grammar and parser for the sample My C Package, you must use version 1.24 or later of Bison and version 2.5.4a or later of Flex. Place the Bison and Flex executables in the Babel Tools folder, for example, <InstallPath>\VisualStudioIntegration\Babel\Tools. These version numbers are specific to the My C sample.