ITextRange::MoveStartWhile method (tom.h)

Article
10/05/2021

Moves the start position of the range either Count characters, or just past all contiguous characters that are found in the set of characters specified by Cset, whichever is less.

Syntax

HRESULT MoveStartWhile(
  VARIANT *Cset,
  long    Count,
  long    *pDelta
);

Parameters

Cset

Type: VARIANT*

The character set to use in the match. This could be an explicit string of characters or a character-set index. For more information, see Character Match Sets.

Count

Type: long

Maximum number of characters to move past. The default value is tomForward, which searches to the end of the story. If Count is greater than zero, the search is forward—toward the end of the story—and if Count is less than zero, search is backward—toward the beginning. If Count is zero, the start position is unchanged.

pDelta

Type: long*

The actual count of characters that the start position 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.

Return code	Description
E_INVALIDARG	Cset is not valid.
S_FALSE	Failure for some other reason.

Remarks

If the new start follows the old end, the new end is set equal to the new start.

The motion described by ITextRange::MoveStartWhile is logical rather than geometric. That is, motion is toward the end or toward the start of a story. Depending on the language, moving to the end of the story could be moving left or moving right.

For more information, see ITextRange and ITextRange::Move.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	tom.h
DLL	Msftedit.dll