POLYLINEQQ (W*32, W*64)

Graphics Function: Draws a line between each successive x, y point in a given array.

Module: USE IFQWIN

Syntax

result = POLYLINEQQ (points, cnt)

points
(Input) An array of DF_POINT objects. The derived type DF_POINT is defined in IFQWIN.F90 as:

type DF_POINT
  sequence
  integer(4) x
  integer(4) y
end type DF_POINT

cnt
(Input) INTEGER(4). Number of elements in the points array.

Results

The result type is INTEGER(4). The result is a nonzero value if successful; otherwise, zero.

POLYLINEQQ uses the viewport-coordinate system.

The lines are drawn using the current graphics color, logical write mode, and line style. The graphics color is set with SETCOLORRGB, the write mode with SETWRITEMODE, and the line style with SETLINESTYLE.

The current graphics position is not used or changed as it is in the LINETO function.

Compatibility

STANDARD GRAPHICS QUICKWIN GRAPHICS

See Also

LINETO, LINETOAREX, SETCOLORRGB, SETLINESTYLE, SETWRITEMODE

Example

  ! Build for QuickWin or Standard Graphics
  USE IFQWIN
  TYPE(DF_POINT) points(12)
  integer(4) result
  integer(4) cnt, i
  ! load the points
  do i = 1,12,2
    points(i).x =20*i
    points(i).y =10
    points(i+1).x =20*i
    points(i+1).y =60
  end do
  ! A sawtooth pattern will appear in the upper left corner
  result = POLYLINEQQ(points, 12)
  end