LanguageService::CreateDropDownHelper Method (IVsTextView^)

Visual Studio 2015
 

Instantiates a TypeAndMemberDropdownBars class.

Namespace:   Microsoft.VisualStudio.Package
Assembly:  Microsoft.VisualStudio.Package.LanguageService.14.0 (in Microsoft.VisualStudio.Package.LanguageService.14.0.dll)

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public:
virtual TypeAndMemberDropdownBars^ CreateDropDownHelper(
	IVsTextView^ forView
)

Parameters

forView
Type: Microsoft.VisualStudio.TextManager.Interop::IVsTextView^

[in] an IVsTextView representing the text view receiving the Navigation bar.

Return Value

Type: Microsoft.VisualStudio.Package::TypeAndMemberDropdownBars^

If successful, returns a TypeAndMemberDropdownBars object; otherwise, returns a null value.

Every text view can have a pair of combo boxes (implemented in what is called a Navigation bar) that show types and members based on the current location of the caret (the edit cursor). These combo-boxes are also used for quick navigation: selecting an item from the list jumps to that item in the source code. If your language service supports this functionality, you must derive a class from TypeAndMemberDropdownBars and return an instantiation of your class from this method.

The base method always returns a null value, indicating that the Navigation bar should not be used.

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