Image drawing and processing functions (prefix syntax)

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Image drawing and processing functions (prefix syntax)

Caution: To know the necessary requirements to draw according to the different platforms used, see Drawing in WINDEV, WEBDEV and WINDEV Mobile.

The following are drawing functions, using prefix syntax:


<Icon variable>.SaveICO	Saves an image in icon format either in a file, or in memory.
<Image variable>.AlphaBlend	Blends two images together. This allows you to create fade-in effects between 2 images.
<Image variable>.Background	Declares the default background color for the rectangles and circles, ... used in an Image variable.
<Image variable>.Blur	Blurs the entire given area in a variable of type Image.
<Image variable>.ChangeMode	Changes the drawing mode used by the drawing functions (<Image variable>.DrawLine, <Image variable>.DrawRectangle, ....).
<Image variable>.Clear	Clears the content of an Image variable and fills it with the specified color.
<Image variable>.Copy	Copies an image to another image.
<Image variable>.Crop	Returns the cropped part of an image. This image is found in an Image variable.
<Image variable>.DominantImageColor	Returns the dominant color (i.e. most frequent color) of an image found in an Image variable.
<Image variable>.DrawArc	Draws a circle arc or an ellipse arc in an Image variable.
<Image variable>.DrawBorder	Draws the borders in an Image variable.
<Image variable>.DrawChord	Draws the chord of a circle (intersection between an ellipse and a straight line) in an Image variable.
<Image variable>.DrawCircle	Draws a circle or an ellipse in an Image variable.
<Image variable>.DrawHalo	Adds a halo effect on an image found in an Image variable].
<Image variable>.DrawLine	Draws a line in an Image variable.
<Image variable>.DrawPoint	Draws a point in an Image variable.
<Image variable>.DrawPolygon	Draws a polygon in an Image variable.
<Image variable>.DrawPolyline	Draws a line composed of multiple segments in an Image variable.
<Image variable>.DrawRectangle	Draws a rectangle in an Image variable.
<Image variable>.DrawRectangleGradient	Draws a rectangle in an Image variable.
<Image variable>.DrawRoundedRectangle	Draws a rounded rectangle in an Image variable.
<Image variable>.DrawShadow	Adds a shadow effect on an image found in an Image variable].
<Image variable>.DrawSlice	Draws a section of a circle or an ellipse in an Image variable.
<Image variable>.DrawText	Draws a text in an Image variable.
<Image variable>.DrawTextMarkdown	Draws Markdown text in a variable of type Image.
<Image variable>.DrawTextRTF	Draws an RTF text in an Image variable.
<Image variable>.EncrustColor	Encrusts a color in an image found in an Image variable].
<Image variable>.EndDrawing	Deletes all the drawings made since the last call to <picLayer variable>.StartDrawing.
<Image variable>.Fill	Colors an area in an Image variable.
<Image variable>.Font	Declares the font that will be used by <Image>.DrawText in an Image variable.
<Image variable>.HorizontalSymmetry	Flips an image contained in an Image variable with respect to a horizontal axis (symmetry with respect to a horizontal axis).
<Image variable>.InvertColor	Inverts the colors in an Image variable.
<Image variable>.ModifyContrast	Changes the contrast of an image in an Image variable.
<Image variable>.ModifyHSL	Modifies the hue, saturation and lightness of an image in an Image variable.
<Image variable>.ModifyHue	Changes the hue of an image in an Image variable.
<Image variable>.ModifyLightness	Modifies the lightness of an image in an Image variable.
<Image variable>.ModifyOpacity	Modifies the opacity of an image (which means the alpha channel of the image).
<Image variable>.ModifySaturation	Modifies the saturation of an image in an Image variable.
<Image variable>.Pen	Declares the default color and style for the lines, rectangles, circles, ... in an Image variable.
<Image variable>.PixelColor	Identifies the color of a pixel contained in an Image variable.
<Image variable>.PixelOpacity	Identifies the opacity of a pixel in an image (in an Image variable) with an Alpha channel.
<Image variable>.Resize	Resizes an image in an Image variable.
<Image variable>.Rotation	Rotates an image in an Image variable.
<Image variable>.SaveBMP	Saves an image contained in an Image variable: in a file in BMP format. in memory.
<Image variable>.SaveGIF	Saves an image found in an Image variable: in a file in GIF format. in memory.
<Image variable>.SaveJPEG	Saves an image found in an Image variable: in a JPEG file. in memory.
<Image variable>.SavePNG	Saves an image found in an Image variable: in a PNG file. in memory.
<Image variable>.StartDrawing	Indicates that the drawing functions that will be used are intended for an Image variable.
<Image variable>.Straighten	Transforms an image by applying perspective correction.
<Image variable>.VerticalSymmetry	Flips an image contained in an Image variable with respect to a vertical axis (symmetry with respect to a vertical axis).
<Image>.AlphaBlend	Blends two images together. This allows you to create fade-in effects between 2 images.
<Image>.Background	Declares the default background color for the rectangles and circles, ... used in an Image control.
<Image>.Blur	Blurs the entire given area in an Image control.
<Image>.ChangeMode	Changes the drawing mode used by the drawing functions (<Image variable>.DrawLine, <Image variable>.DrawRectangle, ....).
<Image>.Clear	Clears the content of an Image control and fills it with the specified color.
<Image>.Copy	Copies an image to another image.
<Image>.DominantImageColor	Returns the dominant (i.e. most frequent) color of an image found in an Image control.
<Image>.DrawArc	Draws a circle arc or an ellipse arc in an Image control.
<Image>.DrawBorder	Draws the borders in an Image control.
<Image>.DrawChord	Draws the chord of a circle (intersection between an ellipse and a straight line) in an Image control.
<Image>.DrawCircle	Draws a circle or an ellipse in an Image control.
<Image>.DrawLine	Draws a line in an Image control.
<Image>.DrawPoint	Draws a point in an Image control.
<Image>.DrawPolygon	Draws a polygon in an Image control,
<Image>.DrawPolyline	Draws a line composed of multiple segments in an Image control.
<Image>.DrawRectangle	Draws a rectangle in an Image control.
<Image>.DrawRectangleGradient	Draws a rectangle in an Image control.
<Image>.DrawRoundedRectangle	Draws a rounded rectangle in an Image control.
<Image>.DrawSlice	Draws a circle or an ellipse section in an Image control.
<Image>.DrawText	Draws a text in an Image control.
<Image>.DrawTextMarkdown	Draws Markdown text in an Image control.
<Image>.DrawTextRTF	Draws RTF text in an Image control.
<Image>.EndDrawing	Deletes all the drawings made since the last call to <picLayer variable>.StartDrawing.
<Image>.Fill	Colors an area in an Image control.
<Image>.Font	Declares the font that will be used by dTexte in an Image control.
<Image>.HorizontalSymmetry	Flips an image in an Image control with respect to a horizontal axis (symmetry with respect to a horizontal axis).
<Image>.InvertColor	Inverts the colors in an Image control.
<Image>.ModifyContrast	Changes the contrast of an image contained in an Image control.
<Image>.ModifyHSL	Modifies the hue, the saturation and the lightness of an image in an Image control.
<Image>.ModifyHue	Changes the hue of an image in an Image control.
<Image>.ModifyLightness	Modifies the lightness of an image contained in an Image control.
<Image>.ModifySaturation	Changes the saturation of an image in an Image control.
<Image>.Pen	Declares the default color and style for the lines, rectangles, circles, ... in an Image control.
<Image>.PixelColor	Identifies the color of a pixel in an Image control.
<Image>.PixelOpacity	Identifies the opacity of a pixel in an image (in an Image control) with an Alpha channel.
<Image>.Resize	Resizes an image in an Image control.
<Image>.Rotation	Rotates an Image control.
<Image>.SaveBMP	Saves an image: in a file in BMP format. in memory.
<Image>.SaveGIF	Saves an image: in a file in GIF format. in memory.
<Image>.SaveJPEG	Saves an image: in a JPEG file. in memory.
<Image>.SavePNG	Saves an image: in a PNG file. in memory.
<Image>.StartDrawing	Indicates that the drawing functions that will be used are intended for the specified Image control.
<Image>.Straighten	Transforms an image by applying perspective correction.
<Image>.VerticalSymmetry	Flips an image contained in an Image control with respect to a vertical axis (symmetry with respect to a vertical axis).
<picLayer variable>.AlphaBlend	Blends two images together. This allows you to create fade-in effects between 2 images.
<picLayer variable>.Background	Declares the default background color for the rectangles and circles, ... used in a picLayer variable.
<picLayer variable>.Blur	Blurs the entire given area in a variable of type picLayer.
<picLayer variable>.ChangeMode	Changes the drawing mode used by the drawing functions (<Image variable>.DrawLine, <Image variable>.DrawRectangle, ....).
<picLayer variable>.DrawArc	Draws a circle arc or an ellipse arc in a picLayer variable.
<picLayer variable>.DrawChord	Draws the chord of a circle (intersection between an ellipse and a straight line) in a picLayer variable.
<picLayer variable>.DrawCircle	Draws a circle or an ellipse in a picLayer variable.
<picLayer variable>.DrawLine	Draws a line in a picLayer variable.
<picLayer variable>.DrawPoint	Draws a point in a picLayer variable.
<picLayer variable>.DrawPolygon	Draws a polygon in a picLayer variable.
<picLayer variable>.DrawPolyline	Draws a line composed of multiple segments.
<picLayer variable>.DrawRectangle	Draws a rectangle in a picLayer variable.
<picLayer variable>.DrawRectangleGradient	Draws a rectangle in a picLayer variable.
<picLayer variable>.DrawRoundedRectangle	Draws a rounded rectangle in a picLayer variable.
<picLayer variable>.DrawSlice	Draws a section of a circle or an ellipse in a picLayer variable.
<picLayer variable>.DrawText	Draws a text in a picLayer variable.
<picLayer variable>.DrawTextMarkdown	Draws Markdown text in a variable of type picLayer.
<picLayer variable>.DrawTextRTF	Draws an RTF text in a picLayer variable.
<picLayer variable>.EndDrawing	Deletes all the drawings made since the last call to <picLayer variable>.StartDrawing.
<picLayer variable>.Fill	Colors an area in a picLayer variable.
<picLayer variable>.Font	Declares the font that will be used by <Image>.DrawText in a picLayer variable.
<picLayer variable>.HorizontalSymmetry	Flips an image contained in a picLayer variable with respect to a horizontal axis (symmetry with respect to a horizontal axis).
<picLayer variable>.InvertColor	Inverts the colors of a picLayer variable.
<picLayer variable>.Pen	Declares the default color and style for the lines, rectangles, circles, ... in a picLayer variable.
<picLayer variable>.PixelColor	Identifies the color of a pixel contained in a picLayer variable.
<picLayer variable>.PixelOpacity	Identifies the opacity of a pixel in a WDPicLayer image with an Alpha channel.
<picLayer variable>.Resize	Resizes an image in a picLayer variable.
<picLayer variable>.Rotation	Rotates an image in a picLayer variable.
<picLayer variable>.StartDrawing	Indicates that the drawing functions that will be used are intended for the specified picLayer variable.
<picLayer variable>.Straighten	Transforms an image by applying perspective correction.
<picLayer variable>.VerticalSymmetry	Flips an image contained in a picLayer variable with respect to a vertical axis (symmetry with respect to a vertical axis).
<Tiff variable>.SaveTIFF	Saves an image in TIFF format into a file or memory.
<WDPic variable>.AlphaBlend	Blends two images together. This allows you to create fade-in effects between 2 images.
<WDPic variable>.Background	Declares the default background color for the rectangles and circles, ... used in a WDPic variable.
<WDPic variable>.Blur	Blurs the entire given area in a variable of type WDPic (on the background layer).
<WDPic variable>.ChangeMode	Changes the drawing mode used by the drawing functions (<Image variable>.DrawLine, <Image variable>.DrawRectangle, ....).
<WDPic variable>.DrawArc	Draws a circle arc or an ellipse arc in a WDPic variable.
<WDPic variable>.DrawChord	Draws the chord of a circle (intersection between an ellipse and a straight line) in a WDPic variable.
<WDPic variable>.DrawCircle	Draws a circle or an ellipse in a WDPic variable.
<WDPic variable>.DrawLine	Draws a line in a WDPic variable.
<WDPic variable>.DrawPoint	Draws a point in a WDPic variable.
<WDPic variable>.DrawPolygon	Draws a polygon in a WDPic variable.
<WDPic variable>.DrawPolyline	Draws a line composed of multiple segments.
<WDPic variable>.DrawRectangle	Draws a rectangle in a WDPic variable.
<WDPic variable>.DrawRectangleGradient	Draws a rectangle in a WDPic variable.
<WDPic variable>.DrawRoundedRectangle	Draws a rounded rectangle in a WDPic variable.
<WDPic variable>.DrawSlice	Draws a section of a circle or an ellipse in a WDPic variable.
<WDPic variable>.DrawText	Draws a text in a WDPic variable.
<WDPic variable>.DrawTextMarkdown	Draws Markdown text in a variable of type WDPic.
<WDPic variable>.DrawTextRTF	Draws an RTF text in a WDPic variable.
<WDPic variable>.EndDrawing	Deletes all the drawings made since the last call to <picLayer variable>.StartDrawing.
<WDPic variable>.Fill	Colors an area in a WDPic variable.
<WDPic variable>.Font	Declares the font that will be used by <Image>.DrawText in a WDPic variable.
<WDPic variable>.HorizontalSymmetry	Flips an image contained in a WDPic variable with respect to a horizontal axis (symmetry with respect to a horizontal axis).
<WDPic variable>.InvertColor	Inverts the colors of a WDPic variable.
<WDPic variable>.Pen	Declares the default color and style for the lines, rectangles, circles, ... in a WDPic variable.
<WDPic variable>.PixelColor	Identifies the color of a pixel contained in a WDPic variable.
<WDPic variable>.PixelOpacity	Identifies the opacity of a pixel in a WDPic image with an Alpha channel.
<WDPic variable>.StartDrawing	Indicates that the drawing functions that will be used are intended for the specified WDPic variable.
<WDPic variable>.VerticalSymmetry	Flips an image contained in a WDPic variable (in the background layer) with respect to a vertical axis (symmetry with respect to a vertical axis).

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

Unit examples (WINDEV): Modifying the Hue, Saturation and Lightness

[ + ] Process on the images via the WLanguage dModifyHSL function.
This function is used to modify the hue, the saturation and the lightness of an image.

Training (WINDEV): WD Java Chart Designer

[ + ] WINDEV enables you to create some Java applications without even knowing Java.
You program with a 5GL (WLanguage) and WINDEV generates the Java code.
The drawing functions of WINDEV are available in Java generation.
This example explains how to create charts with these drawing functions.
Three types of charts are presented in this example:
- the bar chart,
- the scatter chart,
- and the line chart.

Complete examples (WINDEV): WD Magnifier

[ + ] This example enables you to zoom part of the screen with a magnifier.
The maximum zoom value is set to 8.
Summary of the example supplied with WINDEV:
The WLanguge function named dCopyBlt() and the WLanguage property named ..Opacity allow you to perform a capture of the Windows desktop at the location of a window without this window appearing in the screen shot.
This example uses this tip to zoom the part of the screen found below the magnifier.

Cross-platform examples (WINDEV Mobile): WM Notes

[ + ] This example is using the drawing functions of WLanguage for Android and iOS.
It allows you to draw graphic "notes" and to save them.

Training (WEBDEV): WW_Drawing_HTML5

[ + ] WEBDEV includes some drawing functions in browser code, for the browsers that support the HTML5. standard.
This educational example presents:
- an array of drawings,
- and an implementation: the visual choice by the Web user of the categories of seats when making a reservation for a show.

Unit examples (WEBDEV): The drawing functions

[ + ] This example presents the main drawing functions of WEBDEV and it allows you to:
- Initialize an Image control for drawing
- Draw simple shapes
- Write a text in a drawing
- Change the color in a drawing