<Image>.DrawPolyline (Function)

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<Image>.DrawPolyline (Function)

In french: <Image>.DessinePolyligne

Draws a line composed of several segments in an Image control.

Versions 25 and later

This function is now available for Android applications.

New in version 25

This function is now available for Android applications.

The first coordinate indicates the starting point of the first segment, then each coordinate indicates the end of the previous segment and the beginning of the next segment.

Example

IMG_Drawing.Pen(LightBlue, 2, 4)
arrCoordinatesXY2 is array of 0 int = [2, 2, 140, 2, 150, 70, 0, 100, 200,100]
IMG_Drawing.DrawPolyline(arrCoordinatesXY2)

Syntax

Building a line point by point Hide the details

<Image control>.DrawPolyline(<NbPoint> , <X1> , <Y1> , <X2> , <Y2> [, <Xn> [, <Yn> [, <Line color>]]])

<Image control>: Control name

Name of Image control to use.

<NbPoint>: Integer

Number of line segments. This parameter defines the number of <X>, <Y> pairs to specify in the function.

<X1>: Integer

X coordinate of the first segment of the line. These coordinates are expressed in pixels.

<Y1>: Integer

Y coordinate of the first segment of the line. These coordinates are expressed in pixels.

<X2>: Integer

X coordinate of the second segment of the line. These coordinates are expressed in pixels.

<Y2>: Integer

Y coordinate of the second segment of the line. These coordinates are expressed in pixels.

<Xn>: Optional integer

X coordinate of the N segment of the line. These coordinates are expressed in pixels.

<Yn>: Optional integer

Y coordinate of the N segment of the line. These coordinates are expressed in pixels.

<Line color>: Integer or constant (optional)

Line color. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a preset color of WLanguage.
If this parameter is not specified, the line color:
corresponds to the color specified in the last call to <Image>.Pen,
is identical to the color used for the background if <Image>.Pen was not used.

Building a line via an array of X and Y coordinates Hide the details

<Image control>.DrawPolyline(<Array of coordinates> [, <Line color>])

<Image control>: Control name

Name of Image control to use.

<Array of coordinates>: Array of integers or array of points

WLanguage array of integers containing the coordinates of segments that make up the line. The even subscript represent the X coordinates while the odd subscripts represent the Y coordinates of points. These coordinates are expressed in pixels.

<Line color>: Integer or constant (optional)

Line color. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a preset color of WLanguage,
a Color variable.
If this parameter is not specified, the line color:
corresponds to the color specified in the last call to <Image>.Pen,
is identical to the color used for the background if <Image>.Pen was not used.

Remarks

Coordinates

Coordinates are given with respect to the top left corner of the image (coordinates: (0.0)).

Related Examples:

Unit examples (WINDEV): The drawing functions

[ + ] Using the main drawing functions of WINDEV to:
- Initialize an Image control for drawing
- Draw simple shapes
- Write a text into a drawing
- Change the color in a drawing

Business / UI classification : Neutral code

Component : wd250pnt.dll