WORDEXTFLAGS Enumeration
Specifies options for determining the extent of a word.
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: Microsoft.VisualStudio.TextManager.Interop
Assembly: Microsoft.VisualStudio.TextManager.Interop (in Microsoft.VisualStudio.TextManager.Interop.dll)
Syntax
声明
<FlagsAttribute> _
Public Enumeration WORDEXTFLAGS
[FlagsAttribute]
public enum WORDEXTFLAGS
[FlagsAttribute]
public enum class WORDEXTFLAGS
[<FlagsAttribute>]
type WORDEXTFLAGS
public enum WORDEXTFLAGS
Members
| Member name | Description | |
|---|---|---|
| WORDEXT_MOVETYPE_MASK | Flag to mask WORDEXT_PREVIOUS and WORDEXT_NEXT. | |
| WORDEXT_CURRENT | Finds a word or token containing a specified position, if any such word or token exists. | |
| WORDEXT_PREVIOUS | Finds the nearest word or token whose last character is less than a specified position. | |
| WORDEXT_NEXT | Finds the nearest word or token whose first character is greater than a specified position. | |
| WORDEXT_NEAREST | Finds the word or token nearest to a specified position. | |
| WORDEXT_FINDWORD | Finds words only. See Remarks. | |
| WORDEXT_FINDTOKEN | Finds words and tokens. See Remarks. | |
| WORDEXT_FINDEXPRESSION | Find simple expressions, like *pFoo. |
Remarks
For the WORDEXT_FINDWORD value, "FINDWORD" refers any of the following:
keyword
identifier
number
For the WORDEXT_FINDTOKEN value, "FINDTOKEN" refers to any of the following:
keyword, identifier, or number
operator (for example, ++ or %)
delimiter (for example, quotation marks (") or comment marks (// or /))
white space
Thus, by specifying a value of WORDEXT_FINDWORD, you return a word extent that corresponds to a keyword, a number, or an identifier. For example, if the text were "a[1]," the "a" or the "1" could be returned, but the whole expression would not be returned. However, if you specify a value of WORDEXT_FINDTOKEN, then you would return any keyword, number, or identifier, or you would return operators, delimiters, or white space. Thus, if the text were "a[1] ", any single character of the string could match, but any larger portion of the string would not.
备注
The term "token" is not related to a language token in compiler terminology.
COM Signature
From textmgr.idl:
typedef enum _wordextflags
{
WORDEXT_MOVETYPE_MASK = 0x0003,
WORDEXT_CURRENT = 0x0000,
WORDEXT_PREVIOUS = 0x0001,
WORDEXT_NEXT = 0x0002,
WORDEXT_NEAREST = 0x0003,
WORDEXT_FINDWORD = 0x0000,
WORDEXT_FINDTOKEN = 0x0004,
WORDEXT_FINDEXPRESSION = 0x0008,
} WORDEXTFLAGS;