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  • End of drawing
  • Drawing in PHP
  • Drawing in Browser code
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
Performs a rotation:
  • in an Image control,
  • in a variable of type Image.
    WEBDEV - Browser codePHP This type of variable is not available.
  • WINDEVWEBDEV - Server code in a variable of type picLayer.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.
Example
// Rotate the IMG_Image1 control by 45 degrees
Result1 is boolean
Result1 = dRotation(IMG_Image1, 45)
IF Result1 = False THEN Error("The operation failed")
Syntax

Performing a simple rotation Hide the details

<Result> = dRotation(<Image> , <Rotation angle> [, <Options>])
<Result>: Boolean
  • True if the rotation was performed,
  • False otherwise.
<Image>: Control name, Image variable or picLayer variable
Image to use. The 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.
  • WINDEVWEBDEV - Server code the name of a variable of type picLayer.
The rotation is performed in relation to the center of the image. The image is directly modified.
<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.
<Options>: Integer constant
WINDEVWEBDEV - Server codeReports and QueriesWindowsLinuxAndroidiPhone/iPadIOS WidgetMac CatalystJavaUser code (UMC) Rotation options:
drAdaptThe image is flipped and enlarged. Then, its size is reduced to correspond to the initial image size.
drDefaultEnlarge the image (if necessary) so that it corresponds to the dimensions of rotated image.
Constant used by default for Image or picLayer variables.
drNoEnlargingThe image is flipped but not enlarged: the image may be truncated.
Constant used by default for the Image controls.

WEBDEV - Browser codeUniversal Windows 10 AppPHP This parameter is not available.
New in version 28
AndroidJava This parameter is now available.
WINDEVWEBDEV - Server codeReports and QueriesWindowsLinuxUniversal Windows 10 AppAndroidiPhone/iPadIOS WidgetMac CatalystJavaUser code (UMC)

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

<Result> = dRotation(<Image control> , <Rotation angle> , <X of rotation center> , <Y of 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. The rotation is performed in relation to the center of the Image control. The image found in the Image control is modified.
<Rotation angle>: Real
Rotation angle (in degrees).
<X of rotation center>: Integer
X-coordinate (in pixels) of the new rotation center.
<Y of 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.
Constant used by default for Image or picLayer variables.
drNoEnlargingThe image is flipped but not enlarged
Constant used by default for the Image controls.

Universal Windows 10 App This parameter is not available.
New in version 28
AndroidJava This parameter is now available.
Remarks

End of drawing

If dEndDrawing and dRotation 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 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.
Business / UI classification: Neutral code
Component: wd280pnt.dll
See also
Minimum version required
  • Version 9
This page is also available for…
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