ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

This content has been translated automatically.  Click here  to view the French version.
Help / WLanguage / WLanguage functions / Controls, pages and windows / Drawing functions
  • End of drawing
  • Drawing in PHP
  • Drawing in Browser code
WINDEV
WindowsLinuxJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac Catalyst
Others
Stored procedures
Flips an image with respect to a vertical axis (symmetry with respect to a vertical axis). This image can correspond to:
  • an Image control,
  • a variable of type Image.
    WEBDEV - Browser codePHP This type of variable is not available.
  • WEBDEV - Server code a variable of type WDPic (on the background layer),
  • WEBDEV - Server code a variable of type picLayer.
Linux Caution: Using this function under Linux requires a specific configuration.. For more details, see The drawings.
Example
// Symétrie verticale du champ IMG_Image1
MonRésultat is boolean
MonRésultat = dVerticalSymmetry(IMG_Image1)
IF MonRésultat = False THEN Error("L'opération a échoué")
Syntax
<Result> = dVerticalSymmetry(<Image>)
<Result>: Boolean
  • True if the symmetry was performed,
  • False otherwise.
<Image>: Name of the Image control, Image, WDPic or picLayer variable
Image to use. This image can correspond to:
  • the name of an Image control.
  • the name of a variable of type Image.
    WEBDEV - Browser codePHP This type of variable is not available.
  • WEBDEV - Server code the name of a variable of type WDPic. Only the background layer will be handled.
  • WEBDEV - Server code the name of a variable of type picLayer.
The symmetry is performed in relation to the median vertical axis of the control or of the image. The image is directly modified.
Remarks

End of drawing

If dEndDrawing and dVerticalSymmetry are called in the same process, the image changes will not be displayed.
PHP

Drawing in PHP

In PHP, the drawing functions are based on the graphic library GD. This library is commonly used by the PHP hosting providers and therefore it is always enabled. The version of the GD library must be version 2.0.28 (or later). This library can be downloaded from the PHP site.
To enable (if necessary) this library locally, the following elements are required:
  • PHP installed.
  • the PHP.INI file found in the Windows directory must contain the following line: "extension=php_gd2.dll" (instead of ";extension=php_gd2.dll").
  • the php_gd2.dll file must exist in the directory of PHP extensions. This directory is defined in the PHP.INI file by the "extension_dir" variable.
WEBDEV - Browser code

Drawing in Browser code

Some drawing functions are available in Browser code. The drawing functions in Browser code are based on the HTML 5 standard. More specifically, these functions are based on the "canvas" tag of HTML 5.
The drawing features in browser code are available for the recent browsers only (supporting the HTML 5 standard). To find out whether the drawing features are proposed by your browser, use DrawingAvailable.
Attention: To use the drawing functions with Internet Explorer 9, the project must include the reference to the DTD file. To do so, the HTML mode must be "HTML 4.01 Transitional + DTD". This option is available in the "Advanced" tab of the project description window.
Reminder: To display the project description window, under the "Project" pane, in the "Project" group, click on "Description".
Special case: Drawing in the browser of an Android phone: Browser drawing functions are only available in Android version 3 and higher..
Component: wd300pnt.dll
Minimum version required
  • Version 9
This page is also available for…
Comments
Click [Add] to post a comment

Last update: 09/24/2024

Send a report | Local help