Extends the Text Object Model (TOM) to provide extra functionality for windowless operation.

ITextServices Members

OnTxInPlaceActivate	The ITextServices::OnTxInPlaceActivate method notifies the text services object that this control is in-place active.
OnTxInPlaceDeactivate	The ITextServices::OnTxInPlaceDeactivate method notifies the text services object that this control is no longer in-place active.
OnTxPropertyBitsChange	The ITextServices::OnTxPropertyBitsChange method sets properties (represented by bits) for the control.
OnTxSetCursor	The ITextServices::OnTxSetCursor method notifies the text services object to set the cursor.
OnTxUIActivate	The ITextServices::OnTxUIActivate method informs the text services object that the control is now UI active.
OnTxUIDeactivate	The ITextServices::OnTxUIDeactivate method informs the text services object that the control is no longer UI active.
TxDraw	The ITextServices::TxDraw method draws the text services object.
TxGetBaseLinePos	The ITextServices::TxGetBaseLinePos method gets the base line position of the first visible line, in pixels, relative to the text services client rectangle. This permits aligning controls on their base lines.
TxGetCachedSize	The ITextServices::TxGetCachedSize method returns the cached drawing size (if any) that text services is using. Typically, this will be the size of the last client rectangle used in ITextServices::TxDraw, ITextServices::OnTxSetCursor, and so forth, although it is not guaranteed to be.
TxGetCurTargetX	The ITextServices::TxGetCurTargetX method gets the target x position, that is, the current horizontal position of the caret.
TxGetDropTarget	The ITextServices::TxGetDropTarget method gets the drop target for the text control.
TxGetHScroll	The ITextServices::TxGetHScroll method returns horizontal scroll bar information.
TxGetNaturalSize	The ITextServices::TxGetNaturalSize method allows a control to be resized so it fits its content appropriately.
TxGetText	The ITextServices::TxGetText method returns all of the Unicode plain text in the control as a BSTR.
TxGetVScroll	The ITextServices::TxGetVScroll method returns vertical scroll bar state information.
TxQueryHitPoint	The ITextServices::TxQueryHitPoint method tests whether a specified point is within the rectangle of the text services object.
TxSendMessage	The ITextServices::TxSendMessage method is used by the window host to forward messages sent from its window to the text services object.
TxSetText	The ITextServices::TxSetText method sets all of the text in the control.

Remarks

In conjunction with the ITextHost interface, ITextServices provides the means by which a rich edit control can be used without creating a window.

When to Implement

Applications do not implement the ITextServices interface.

When to Use

Applications can call the CreateTextServices function to create a text services object. To retrieve an ITextServices pointer, call QueryInterface on the private IUnknown pointer returned by CreateTextServices. You can then call the ITextServices methods to send messages to the text services object.

Interface Information

Minimum DLL Version	msftedit.dll
Inherits from	IUnknown
Header	textserv.h
Minimum operating systems	Windows 95 with Rich Edit 2.0, Windows 98, Windows NT 4.0

See Also

Windowless Rich Edit Controls Overview