<Image variable>.PixelOpacity (Function)

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<Image variable>.PixelOpacity (Function)

In french: <Variable Image>.PixelOpacité

Identifies the opacity of a pixel in an image (in an Image variable) that manages the Alpha layer.

Versions 15 and later

This function is now available for Java applications.

New in version 15

This function is now available for Java applications.

Versions 16 and later

This function is now available for Android applications.

This function is now available for WINDEV applications in Linux.

Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.

New in version 16

This function is now available for Android applications.

This function is now available for WINDEV applications in Linux.

Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.

This function is now available for Android applications.

This function is now available for WINDEV applications in Linux.

Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Example

MyImage is Image = "Test.gif"
// Identify the opacity of the pixel (15, 25)
// on the Image variable
ResOpacity = MyImage.PixelOpacity(15, 25)
IMG_MyDrawing = MyImage

Syntax

<Result> = <Image variable>.PixelOpacity(<X coordinate> , <Y coordinate>)

<Result>: Integer

Opacity of specified pixel (included between 0 for transparent and 255 for opaque).

<Image variable>: Image variable

Name of Image variable to use.

<X coordinate>: Integer

Horizontal position of pixel to use.

<Y coordinate>: Integer

Vertical position of pixel to use.

Remarks

Coordinates

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

Drawing in an image with opacity

To specify that the drawing in the image handles opacity (Alpha layer), use the <Image variable>.StartDrawing function by specifying the constant dWithOpacity.

Component : wd250obj.dll