ITextSelection::EndKey method (tom.h)

Mimics the functionality of the End key.

Syntax

HRESULT EndKey(
  long Unit,
  long Extend,
  long *pDelta
);

Parameters

Unit

Type: long

Unit to use. It can be one of the following.

Extend

Type: long

Flag that indicates how to change the selection. If Extend is zero (or tomMove), the method collapses the selection to an insertion point. If Extend is 1 (or tomExtend), the method moves the active end and leaves the other end alone. The default value is zero.

pDelta

Type: long*

Pointer to a variable that receives the count of characters that the insertion point or the active end is moved. This parameter can be null.

Return value

Type: HRESULT

The method returns an HRESULT value. If the method succeeds, it returns S_OK. If the method fails, it returns one of the following error codes. For more information about COM error codes, see Error Handling in COM.

Remarks

Setting Extend to tomExtend (or nonzero) corresponds to the Shift key being pressed. Setting Unit to tomLine corresponds to the Ctrl key not being pressed. Setting Unit to tomStory to Ctrl being pressed. The pDelta parameters receives the number of characters that the insertion point or active end is moved.

The ITextSelection::HomeKey and ITextSelection::EndKey methods are used to mimic the standard Home/End key behavior.

The tomLine value mimics the Home or End key behavior without the Ctrl key pressed, while tomStory mimics the behavior with the Ctrl key pressed. Similarly, tomMove mimics the Home or End key behavior without the Shift key pressed, while tomExtend mimics the behavior with the Shift key pressed. So EndKey(tomStory) converts the selection into an insertion point at the end of the associated story, while EndKey(tomStory, tomExtend) moves the active end of the selection to the end of the story and leaves the other end where it was.

The HomeKey and EndKey methods are logical methods like the Move* methods, rather than directional methods. Thus, they depend on the language that is involved. For example, in Arabic text, HomeKey moves to the right end of a line, whereas in English text, it moves to the left. Thus, HomeKey and EndKey are different than the MoveLeft and MoveRight methods. Also, note that the EndKey method is quite different from the End property, which is the cp at the end of the selection. HomeKey and EndKey also differ from the StartOf and EndOf methods in that they extend from the active end, whereas StartOf extends from Start and EndOf extends from End.

Requirements

See also

Conceptual

EndOf

HomeKey

ITextSelection

Move

MoveLeft

MoveRight

Reference

StartOf

Text Object Model