• End of drawing
  • Drawing in PHP
  • Drawing in Browser code
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WindowsLinuxPHPWEBDEV - Browser code
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Stored procedures
Rotates an Image control.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
// Rotate the IMG_Image1 control by 45 degrees
Result1 is boolean
Result1 = IMG_Image1.Rotation(45)
IF Result1 = False THEN Error("The operation failed")

Performing a simple rotation Hide the details

<Result> = <Image control>.Rotation(<Rotation angle>)
<Result>: Boolean
  • True if the rotation was performed,
  • False otherwise.
<Image control>: Control name
Name of the Image control to be used.
<Rotation angle>: Real
Rotation angle (in degrees).
  • If the angle is positive, the image rotates clockwise.
  • If the angle is negative, the image rotates counterclockwise.
WEBDEV - Server codeWindowsLinux

Performing a rotation while modifying the center of rotation Hide the details

<Result> = <Image control>.Rotation(<Rotation angle> , <X rotation center> , <Y rotation center> [, <Options>])
<Result>: Boolean
  • True if the rotation was performed,
  • False otherwise.
<Image control>: Control name
Name of the Image control to be used.
<Rotation angle>: Real
Rotation angle (in degrees).
<X rotation center>: Integer
X-coordinate (in pixels) of the new rotation center.
<Y rotation center>: Integer
Y-coordinate (in pixels) of the new rotation center.
<Options>: Integer constant
Rotation options:
drDefaultEnlarge the image (if necessary) so that it corresponds to the dimensions of rotated image.
drNoEnlargingThe image is flipped but not enlarged
Constant used by default for the Image controls.


End of drawing

If <Image>.EndDrawing and <Image>.Rotation are called in the same process, the image changes will not be displayed.

Drawing in PHP

In PHP, the drawing functions are based on the graphic library GD. This library is commonly used by the PHP hosting companies 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.
Caution: 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 description window of project.
Reminder: To open the project description window, go to the "Project" tab, "Project" group and click "Description".
Special case: Drawing in the browser of an Android phone: The browser drawing functions are only available starting with version 3 of Android.
Related Examples:
Image rotation Unit examples (WINDEV): Image rotation
[ + ] Image rotation from any point that will be used as rotation center.
Component: wd280pnt.dll
Minimum version required
  • Version 24
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