An EditWordBreakProc function is an application-defined callback function. A value of type EDITWORDBREAKPROC is a pointer to such a function.
Windows NT: A multiline edit control calls an EditWordBreakProc function whenever the control must break a line of text.
Windows 95: A multiline edit control or a rich edit control calls an EditWordBreakProc function whenever the control must break a line of text.
int CALLBACK EditWordBreakProc(
LPTSTR lpch, |
// pointer to edit text |
int ichCurrent, |
// index of starting point |
int cch, |
// length in characters of edit text |
int code |
// action to take |
); |
Value |
Action |
WB_ISDELIMITER |
Checks whether the character at the current position is a delimiter. |
WB_LEFT |
Looks for the beginning of a word to the left of the current position. |
WB_RIGHT |
Looks for the beginning of a word to the right of the current position. (This is useful in right-aligned edit controls.) |
Windows 95: Additional values for the code parameter are defined for rich edit controls. For a list of these values, see the description of the EM_FINDWORDBREAK message.
If the code parameter specifies WB_ISDELIMITER, the return value is nonzero (TRUE) if the character at the current position is a delimiter, or zero if it is not. Otherwise, the return value is an index to the beginning of a word in the buffer of text.
A carriage return followed by a linefeed must be treated as a single word by the callback function. Two carriage returns followed by a linefeed also must be treated as a single word.
An application must install the callback function by specifying the address of the callback function in an EM_SETWORDBREAKPROC message.
EditWordBreakProc is a placeholder for an application-defined function name.
SendMessage, EM_FINDWORDBREAK, EM_SETWORDBREAKPROC
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