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Scroll
Purpose Scrolls text on the screen in any of the four directions.
Decln. Scroll(Way:direction;X1,Y1,X2,Y2:byte);
Remarks Way is the direction to scroll the text. The valid directions are
Up, Down, Left and Right.
X1, Y1 are the coordinates of the top left corner of the region
to be scrolled.
X2, Y2 are the coordinates of the lower right corner of the
region to be scrolled.
One line or column of text is removed, and a new blank line is
inserted.
Example
BEGIN
SCROLL(UP,1,1,40,25);
END;
The left side of the display screen is scrolled up one line. The top line
of the text disappears, and a new blank line is added at the bottom of the
screen.
See Also:
MoveScreenBlock
CopyScreenBlock
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Written by Dave Pearson