This message scrolls the content of the control by the given number of lines.
| Parameter | Description |
| wParam | Is not used. | |
| lParam | Contains the number of lines and character positions to scroll. The low-order word of the lParam parameter contains the number of lines to scroll vertically; the high-order word contains the number of character positions to scroll horizontally. |
This message will not be processed by single-line edit controls.