EM_LINEFROMCHAR  BXQAAQ 

An application sends an EM_LINEFROMCHAR message to retrieve the index of the line that contains the specified character index in a multiline edit control. A character index is the number of characters from the beginning of the edit control.

EM_LINEFROMCHAR

wParam = (WPARAM) ich;  // character index

lParam = 0;             // not used; must be zero

Parameters

ich

Value of wParam. Specifies the character index of the character contained in the line whose number is to be retrieved. If the ich parameter is -1, either the line number of the current line (the line containing the caret) is retrieved or, if there is a selection, the line number of the line containing the beginning of the selection is retrieved.

Return Values

The return value is the zero-based line number of the line containing the character index specified by ich.

Remarks

In a rich edit control, if the character index is greater than 64K, use the message EM_EXLINEFROMCHAR.

See Also