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LINE Statement Programming Example
 
This example uses LINE statements to display a series of screens
with different line graphics. To run this example, your screen must
be 320 pixels wide by 200 pixels high and support CGA screen mode.
 
SCREEN 1                          'Sets up the screen mode.
 
LINE -(X2, Y2)                    'Draws a line (in the
                                  'foreground color) from
                                  'the most recent point
                                  'to  X2,Y2.
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
LINE(0, 0)-(319, 199)             'Draws a diagonal line across
                                  'the screen (downward).
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
LINE(0, 100)-(319, 100)           'Draws a horizontal line
                                  'across the screen.
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
LINE(10, 10)-(20, 20), 2          'Draws a line in color 2.
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
FOR X = 0 to 319                  'Draws an alternating pattern
    LINE(X, 0)-(X, 199), X AND 1  '(line on/line off) on mono-
NEXT                              'chrome display.
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
LINE (0, 0)-(100, 100),, B        'Draws a box in the fore-
                                  'ground color (note that the
                                  'color is not included).
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
LINE STEP(0,0)-STEP(200,200),2,BF 'Draws a filled box in color
                                  '2 (coordinates are given as
                                  'offsets with the STEP option).
DO
LOOP WHILE INKEY$ = ""            'Press any key to continue
CLS    ' Clear screen
LINE(0,0)-(160,100),3,,&HFF00     'Draws a dashed line from
                                  'the upper lefthand corner to
                                  'the center of the screen in
                                  'color 3.