EM_LINELENGTH

An application sends an EM_LINELENGTH message to retrieve the length of a line, in characters, in an edit control.

EM_LINELENGTH 
wParam = (WPARAM) ich;  // character index 
lParam = 0;             // not used; must be zero 
 

Parameters

ich

Value of wParam. Specifies the character index of a character in the line whose length is to be retrieved when EM_LINELENGTH is sent to a multiline edit control. If this parameter is –1, the message returns the number of unselected characters on lines containing selected characters. For example, if the selection extended from the fourth character of one line through the eighth character from the end of the next line, the return value would be 10 (three characters on the first line and seven on the next).

Return Values

The return value is the length, in characters, of the line specified by the ich parameter when an EM_LINELENGTH message is sent to a multiline edit control. The return value is the length, in characters, of the text in the edit control when an EM_LINELENGTH message is sent to a single-line edit control.

Remarks

Use the EM_LINEINDEX message to retrieve a character index for a given line number within a multiline edit control.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

Edit Controls Overview, Edit Control Messages, EM_LINEINDEX