<Image>.DrawPoint (Function)

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Drawing functions on Image controls

DrawPoint

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<Image>.DrawPoint (Function)

In french: <Image>.DessinePoint

Draws a point in an Image control.

Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.

Example

// Draw a light yellow point in an Image control
IMG_Drawing.DrawPoint(10, 50, LightYellow)

Syntax

Drawing a point by specifying its coordinates Hide the details

<Image control>.DrawPoint(<X-coordinate> , <Y-coordinate> [, <Point color> [, <Opacity>]])

<Image control>: Control name

Name of the Image control to be used.

<X-coordinate>: Integer

Horizontal position (in pixels) of the point to draw.

<Y-coordinate>: Integer

Vertical position (in pixels) of the point to draw.

<Point color>: Integer or constant (optional)

Color that must be assigned to the point. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a WLanguage preset color.
If this parameter is not specified, the color of the point:
is Transparent if <Image>.Pen has not been used beforehand,
corresponds to the color specified in the last call to <Image>.Pen.

<Opacity>: Optional integer

Opacity of color, included between 0 (transparent) and 255 (opaque). An opacity sets to 128 indicates that the relevant pixel will have a transparency of 50% when it is drawn on the screen or saved in an image in PNG format.
Remark: This opacity will be taken into account if the drawing found in the image was initialized by the dWithOpacity constant (<Image>.StartDrawing).

Drawing a point via a Point variable Hide the details

<Image control>.DrawPoint(<Point> [, <Point color> [, <Opacity>]])

<Image control>: Control name

Name of the Image control to be used.

<Point>: Point variable

Name of the Point variable containing the coordinates of the point to draw.

<Point color>: Integer or constant (optional)

Color that must be assigned to the point. This color can correspond to:
an RGB color (returned by RGB),
an HSL color (returned by HSL),
a WLanguage preset color.
If this parameter is not specified, the color of the point:
is Transparent if <Image>.Pen has not been used beforehand,
corresponds to the color specified in the last call to <Image>.Pen.

<Opacity>: Optional integer

Opacity of color, included between 0 (transparent) and 255 (opaque). An opacity sets to 128 indicates that the relevant pixel will have a transparency of 50% when it is drawn on the screen or saved in an image in PNG format.
Remark: This opacity will be taken into account if the drawing found in the image was initialized by the dWithOpacity constant (<Image>.StartDrawing).

Remarks

Coordinates

Coordinates are specified with respect to the upper-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: wd280pnt.dll