ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

<Image variable>.DrawChord (Function)
Draws the chord of a circle (intersection between an ellipse and a straight line) in an Image variable.
<picLayer variable>.AlphaBlend (Function)
Blends two images together. This allows you to create fade-in effects between 2 images.
<WDPic variable>.InvertColor (Function)
Inverts the colors of a WDPic variable.
<Image variable>.DrawCircle (Function)
Draws a circle or an ellipse in an Image variable.
Functions for managing images
dFill (Function)
Colors an area: in an Image control, in an Image variable, in a WDPic variable (on the background layer), in a picLayer variable....
VariantConvert (Function)
Converts the value stored in a Variant variable].
dVerticalSymmetry (Function)
Flips an image with respect to a vertical axis (symmetry with respect to a vertical axis).
dHorizontalSymmetry (Function)
Flips an image with respect to a horizontal axis (symmetry with respect to a horizontal axis).
dPixelOpacity (Function)
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....
The "Window position preview" pane
The "Window position preview" pane is used to view and/or modify the opening position of the windows currently modified (according to the screen resolution used)......
Managing the synchronization
For each action performed in a page, the mechanism for page synchronization automatically checks the synchronization......
dSaveImageJPEG (Function)
Saves an image: in a JPEG file. in memory....
Managing the certificates
Signing a file allows you to check that the file was not modified or altered since it was signed. The signature also allows you to check the issuer identity....
Handling TimeLine controls programmatically
A TimeLine control can be......
Constants for managing animations
List of constants used by the functions for managing the animations...
dStartDrawing (Function)
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....
<picLayer variable>.DrawRectangleGradient (Function)
Draws a rectangle in a picLayer variable.
JSInfoEvent (Function)
Used to handle the JavaScript properties of the browser event that triggered the code execution.
<Looper>.DisplayPopup (Function)
Displays the automatic zoom popup for the Image Gallery control.
PHPExecute (Function)
Calls an external .php script and returns the result in a string.
UnloadWDL (Function)
Frees the library that was loaded in memory by LoadWDL.
dEndDrawing (Function)
Deletes all the drawings made since the last call to dStartDrawing.
How to develop a site for Linux?
The method for developing a site for Linux is identical to the method for developing a site for Windows....
<Image>.DrawRectangle (Function)
Draws a rectangle in an Image control.