IVsTextView Interface

Manages the text view of an editor window and contains methods to manage the text view. The view is essentially the editor window shown in the user interface (UI).

Namespace:  Microsoft.VisualStudio.TextManager.Interop
Assembly:  Microsoft.VisualStudio.TextManager.Interop (in Microsoft.VisualStudio.TextManager.Interop.dll)

Syntax

'Dichiarazione
<InterfaceTypeAttribute()> _
<GuidAttribute("BB23A14B-7C61-469A-9890-A95648CED5E6")> _
Public Interface IVsTextView

[InterfaceTypeAttribute()]
[GuidAttribute("BB23A14B-7C61-469A-9890-A95648CED5E6")]
public interface IVsTextView

[InterfaceTypeAttribute()]
[GuidAttribute(L"BB23A14B-7C61-469A-9890-A95648CED5E6")]
public interface class IVsTextView

[<InterfaceTypeAttribute()>]
[<GuidAttribute("BB23A14B-7C61-469A-9890-A95648CED5E6")>]
type IVsTextView =  interface end

public interface IVsTextView

The IVsTextView type exposes the following members.

Methods

	Name	Description
	AddCommandFilter	Adds a command filter to the existing chain of command filters.
	CenterColumns	Places the specified column of text in the center of the view.
	CenterLines	Places the specified lines of text in the center of the view.
	ClearSelection	Clears the current selection.
	CloseView	Closes and unregisters a view with the view manager.
	EnsureSpanVisible	Ensures that text is in view, both vertically and horizontally.
	GetBuffer	Returns the current contents of the text buffer.
	GetCaretPos	Returns the line and column index of the cursor position.
	GetLineAndColumn	Converts a text stream position to a line and column index.
	GetLineHeight	Returns the pixel height of a line.
	GetNearestPosition	Converts a line and column index to a text stream position.
	GetPointOfLineColumn	Returns the coordinates for the upper left corner of a particular line and column.
	GetScrollInfo	Returns the core text editor's scroll bar settings for the specified scroll bar.
	GetSelectedText	Returns a copy of the selected text.
	GetSelection	Returns the text span corresponding to the current selection, if there is one.
	GetSelectionDataObject	Returns a copy of the selected text in IDataObject interface format.
	GetSelectionMode	Returns the current selection mode.
	GetSelectionSpan	Returns the text span associated with a selection.
	GetTextStream	Returns a specified stream of text in a string.
	GetWindowHandle	Returns the window handle for this view.
	GetWordExtent	Returns the current word extent.
	HighlightMatchingBrace	Highlights the matching brace in a language construct.
	Initialize	Creates the view and allows clients to specify one or more TextViewInitFlags options.
	PositionCaretForEditing	Puts the caret in a position suitable for editing a function.
	RemoveCommandFilter	Removes a command filter from the chain of command filters.
	ReplaceTextOnLine	Replaces line text.
	RestrictViewRange	Reduces the view’s range of visible/editable lines to a subset of the buffer’s lines.
	SendExplicitFocus	Sends explicit focus to the window.
	SetBuffer	Associates a text buffer with the view.
	SetCaretPos	Sets the coordinates of the end point of a selection.
	SetScrollPosition	Sets the core text editor's scroll bar settings for the specified scroll bar.
	SetSelection	Selects specified text.
	SetSelectionMode	Sets the selection mode.
	SetTopLine	Sets the top line in the view to the baseline.
	UpdateCompletionStatus	Used for word completion control.
	UpdateTipWindow	Updates the tip window.
	UpdateViewFrameCaption	Forces the view to update its frame window caption, such as "[Read only]".

Top

Remarks

The IVsTextView interface is not the MDI child, but an individual window of text. If a splitter is involved, there can be multiple views in an MDI child. The term, caret, refers to the text insertion point, while the term, cursor, refers to the mouse pointer.

Warning

This interface is not thread-safe. You should not call anything on this interface from anything but the main UI thread.

If you need to perform any operations on the view from a different thread, you may either:

• Use the interface IVsThreadSafeTextView.

• Call the GetWindowHandle method and use the PostMessage method to post messages to the main thread.

Some methods on IVsTextViewuse ViewCol coordinates (for example, GetTextStream and GetCaretPos), while others use CharIndex coordinates (for example, GetWordExtent). ViewCol coordinates may include virtual space while CharIndex coordinates are only an offset into a buffer line and never include virtual space.

If you get a coordinate in ViewCol coordinates, then you should only call methods that take CharIndex coordinates after making sure that the ViewCol coordinate does not lie in the virtual space region. For example, if you call the following:

long iLine;

long cCount;

ViewCol iCol;

IVsTextView::SomeMethod(&iLine, &icol);

Then you must check to be sure that the following is true:

IVsTextBuffer::GetLengthOfLine(iLine, &cCount);

iCol < cCount

Then call the following:

IVsTextView::SomeOtherMethod(ViewCol(iCol ))

// where SomeOtherMethod takes ViewCol coordinates

See illustrations of the implementation and/or calling of this interface in the sample Figures Language Service.

Notes to Callers

Called by clients who want to manage their view.

See Also

Reference

Microsoft.VisualStudio.TextManager.Interop Namespace