ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Help / WLanguage / WLanguage functions / Controls, pages and windows / Drawing functions
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Others
Stored procedures
Blends two images together. This allows you to create fade-in effects between 2 images. This function handles:
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
Example
// Declare the promotion image
MyPromoImage is Image = "PromoImage.png"
 
// Blend the promotion image in the product image with an opacity set to 80%
dAlphaBlend(IMG_PRODUCT, MyPromoImage, 80)
Syntax
dAlphaBlend(<Destination image> , <Source image> [, <Opacity>])
<Destination image>: Image control or Image, WDPic or picLayer variable
Image in which the merge must be performed. The image can correspond to:
  • the name of an Image control.
  • the name of a variable of type Image.
  • WINDEVWEBDEV - Server code the name of a variable of type WDPic. Only the background layer will be handled.
  • WINDEVWEBDEV - Server code the name of a variable of type picLayer.
For the blend, this image will be considered as the background image.
<Source image>: Image control or Image, WDPic or picLayer variable
Image to merge. The image can correspond to:
  • the name of an Image control.
  • the name of a variable of type Image.
  • WINDEVWEBDEV - Server code the name of a variable of type WDPic. Only the background layer will be handled.
  • WINDEVWEBDEV - Server code the name of a variable of type picLayer.
<Opacity>: Optional real
Percentage of opacity that must be applied to <Source image> before performing the blend (100% by default, no opacity is applied).
Remarks
  • The size of the destination image corresponds to the reference size.
  • dAlphaBlend blends the images and keeps the alpha channel of the destination image. Therefore, the alpha channel of the source image is not used.
Component: wd290pnt.dll
Minimum version required
  • Version 17
This page is also available for…
Comments
Click [Add] to post a comment

Last update: 05/26/2022

Send a report | Local help