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
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.
Use the EM_LINEINDEX message to retrieve a character index for a given line number within a multiline edit control.
file: /Techref/os/win/api/win32/mess/src/msg05_20.htm, 1KB, , updated: 2000/4/7 12:19, local time: 2024/8/31 19:55,
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Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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