Properties specific to Image variables

Property name	Type used	Effect
BitPerPixel	Integer	Number of bits per pixel. This property is read-only.
DrawingScale	Real	Scale that will be used for the drawing functions (dXXX functions): the coordinates used by these functions will be multiplied by this value. This property is not available.
EXIF[Exif tag]	Associative array	Allows you to get and change the content of the specified Exif tag. Modified Exif tags can be saved using dSaveImageJPEG with the imgSaveTag constant. The Empty property is used to determine if the content of the Exif tag is empty. For example: MyImage is Image ... IF NOT MyImage.EXIF[320]..Empty THEN IsTagValue = MyImage.EXIF[320] END The available Exif tags are listed in the Remarks. This property is not available.
FillColor	Color variable	Fill color of the image. This color is used: when the image is resized (Height and Width properties). when turning the image around (dRotation).
Height	Integer	Image height in pixels. If this property is modified, the image is not deformed: additional pixels are added. The color of these pixels is defined with the FillColor property.
Image	All types	Used to load an image from a buffer, a file or a memo. This property is equivalent to dLoadImage. Remarks: In read mode, this property returns a buffer containing the image in PNG format. The images in SVG or PDF format are not supported. To manage these formats, you must use dLoadImage. The animated images are not supported. A single page of multi-page images (TIF, ICO) can be loaded. Only the first page is loaded. You have the ability to draw a chart in an Image variable via grDestinationImage. The ICO format is not supported by iOS.
Pixel[x,y]	Array of Color	Used to handle the pixels of the image.
Valid	Boolean	Returns the validity of the image: True if the image is valid: it was successfully loaded or created. False otherwise. This property is read-only.
Width	Integer	Image width in pixels. If this property is modified, the image is not deformed: additional pixels are added. The color of these pixels is defined with the FillColor property.
WithAlpha	Boolean	Used to find out whether the image contains an alpha channel: True if the image contains an alpha channel, False otherwise. This property is read-only.

Accessing the pixels

Managing the Alpha channel

• if it was created by default with an alpha channel, specified with the FillColor property.
• if it was loaded from an image format containing an alpha channel (PNG format for example).

Image variable and Image control

• assign an Image variable to an Image control.
• assign an Image control to an Image variable.

Image variable and debugger

Creating an image with a specific size

Available EXIF tags

Functions that use Image variables

AlbumSave	Saves an image, a photo or a video in the photo album of the mobile device.
BCToImage	Generates the image of a bar code.
Clipboard	Retrieves the text or image found in the system clipboard.
dAlphaBlend	Blends two images together. This allows you to create fade-in effects between 2 images.
dArc	Draws an arc of circle or an arc of ellipse: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dBackground	Declares the default background color for the rectangles, circles, etc.:: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dBlur	Blurs the entire given area: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dBorder	Draws the borders.
dChangeMode	Changes the drawing mode used by the drawing functions (dLine, dRectangle, ....).
dChord	Draws the chord of a circle (intersection between an ellipse and a straight line): in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dCircle	Draws a circle or an ellipse: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dCopy	Copies an image to another image.
dCopyBlt	Copies an image: from an Image control to another Image control. from an Image variable to another Image variable.
New in version 28 dCopyControlImage	Copy the image of a field from a WINDEV window into an Variable of type Image.
dCopyScreenImage	Copies the screen content to an Image variable or to an Image control.
dCopyWindowImage	Copies the image from a WINDEV window to an Image variable or to an Image control.
dCrop	Returns the cropped part of an image. This image is found in an Image variable.
dDominantImageColor	Returns the dominant (i.e. most frequent) color of an image in an Image variable or in an Image control.
dEncrustColor	Encrusts a color in an image found in an Image variable].
dEndDrawing	Deletes all the drawings made since the last call to dStartDrawing.
dFill	Colors an area: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dFont	Declares the font that will be used by dText: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dHalo	Adds a halo effect on an image found in an Image variable].
dHorizontalSymmetry	Flips an image with respect to a horizontal axis (symmetry with respect to a horizontal axis).
DiagramToImage	Exports a diagram to a variable of type Image.
dInvertColor	Inverts the colors: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dLine	Draws a line: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dLoadImage	Loads an image in an Image variable from a memo, a file or a binary buffer.
dModifyHSL	Modifies the hue, the saturation and the lightness of an image found: in an Image control, in an Image variable.
dModifyHue	Changes the hue of an image: in an Image control, in an Image variable.
dModifyLightness	Changes the lightness of an image found: in an Image control, in an Image variable.
dModifyOpacity	Modifies the opacity of an image (which means the alpha channel of the image).
dModifySaturation	Modifies the saturation of an image found: in an Image control, in an Image variable.
DocAdd	Adds: at the end of a Word Processing document: an element, a document, a paragraph, a text, an image or a fragment. at the end of a fragment: an element, a text or an image.
DocInsert	Inserts an object into a Word Processing document or replaces the content of the current fragment. The objects that can be used are: an element, a document, a paragraph, a text, an image, a fragment.
DocToImage	Exports a page found in a Word Processing document in image format.
dPen	Declares the default color and style for the lines, rectangles, circles, ... found: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dPixelColor	Identifies the color of a pixel: in an Image control. in an Image variable. in a picLayer variable. in a WDPic variable].
dPixelOpacity	Identifies the opacity of a pixel in an image that has an Alpha channel. This image can be: an Image control, an Image variable, a WDPic variable (on the background layer), a picLayer variable.
dPoint	Draws a point: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dPolygon	Draws a polygon: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dPolyline	Draws a line composed of multiple segments.
dRectangle	Draws a rectangle: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dRectangleGradient	Draws a rectangle: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dResize	Resizes an image: in an Image control. in an Image variable. in a picLayer variable].
dRotation	Performs a rotation: of an Image control. of an Image variable. of a picLayer variable.
dRoundedRectangle	Draws a rounded rectangle: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dSaveImageBMP	Saves an image: in a file in BMP format. in memory.
dSaveImageGIF	Saves an image: in a file in GIF format. in memory.
dSaveImageJPEG	Saves an image: in a JPEG file. in memory.
dSaveImagePNG	Saves an image: in a PNG file. in memory.
dShadow	Adds a shadow effect on an image found in an Image variable].
dSlice	Draws a circle section or an ellipse section: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dStartDrawing	Indicates that the drawing functions that will be used are intended for: the specified Image control, the specified Image variable, the specified Image variable, the specified WDPic variable (on the background layer), the specified picLayer variable.
dText	Draws a text: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable.
dTextRTF	Draws RTF text: in an Image control, in an Image variable.
dTransferToImage	Creates an image from a buffer of pixels encoded in a specific format. This function is an advanced function. This function is mainly used to handle the images returned by external APIs via Image variables.
dVerticalSymmetry	Flips an image with respect to a vertical axis (symmetry with respect to a vertical axis).
grDestinationImage	Defines an Image variable as destination of a chart.
grSaveImage	Saves the image of a chart in an Image variable.
iImageHeight	Calculates the height of the image to print (in millimeters).
iImageWidth	Calculates the width of the image to print (in millimeters).
iPrintImage	Sends the image file to print to the print buffer.
PDFExtractPage	Extracts a page from a PDF file in an Variable of type Image.
ToClipboard	Writes text or image information into the system clipboard.

Functions (prefix syntax) that handle Image variables