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New WINDEV, WEBDEV, WINDEV Mobile 24 feature!
  • Image found in a Web Camera control
  • Drawing in browser code
  • Drawing in PHP
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WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
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Stored procedures
Saves an image:
  • in a file in GIF format.
  • in memory.
This image corresponds to the image found:
  • in an Image control.
  • in a Bar Code control.
    WEBDEV - Server codePHP The Bar Code controls are not available in this version. Therefore, no image found in a Bar Code control can be saved.
  • in a Web Camera control.
Notes:
  • Only the visible part of Image control is saved.
  • This function can only be used to save the images for screen resolutions up to 32 bits.
  • This function cannot be used with the Image controls found in the reports.
WEBDEV - Browser code In browser code, this function can only be used to save an image in memory.
Linux Caution: A specific configuration is required to use this function in Linux. See The drawings for more details.
Example
// Saves in memory the image found in "IMG_ImageDrawing"
ResSave = IMG_ImageDrawing.SaveGIF(inMemory)
WEBDEV - Server codePHPAjax
// Saves the image found in "IMG_ImageDrawing" in "C:\Documents\Image.GIF"
ResSave = IMG_ImageDrawing.SaveGIF("C:\Documents\Image.GIF")
Syntax
WEBDEV - Server codePHPAjax

Saving an image in a file in GIF format Hide the details

<Result> = <Image control>.SaveGIF(<File name> [, <Number of colors>])
<Result>: Boolean
  • True if the image was saved,
  • False otherwise. To find out the error details, use ErrorInfo with the errMessage constant.
<Image control>: Control name
Name of Image control to use.
  • Name of Image control, Bar Code control or Web Camera control to use. The Image controls found in a report cannot be used.
  • WEBDEV - Server code Name of Image control or Web Camera control to use
<File name>: Character string
Name and full (or relative) path of GIF file. A UNC path can be used. The file extension is optional.
Caution:
  • The destination directory must exist in order for the image to be saved.
  • The existence of the GIF file is not checked. This file is automatically overwritten if it already exists.
<Number of colors>: Optional integer
Number of colors for the image saved. Value included between 16 and 256 (256 by default). This parameter corresponds to the number of colors proposed in the color palette when using the GIF file.

Saving an image in memory Hide the details

<Result> = <Image control>.SaveGIF(<inMemory> [, <Number of colors>])
<Result>: Buffer
Byte string containing the image in GIF format.
Then, this byte string can be assigned to an Image control, saved in a file (fSaveText), sent via a network (with the Socket functions), ...
WEBDEV - Browser code In browser code, this byte string can only be assigned to another image ("Localize the image in the _WEB directory in browser code" must be unchecked). It cannot be saved in a file to build an image file.
<Image control>: Control name
Name of Image control to use.
  • Name of Image control, Bar Code control or Web Camera control to use. The Image controls found in a report cannot be used.
  • WEBDEV - Server code Name of Image control or Web Camera control to use
<inMemory>: Constant
inMemory: Constant used to save an image in memory.
<Number of colors>: Optional integer
Number of colors for the image saved. Value included between 16 and 256 (256 by default). This parameter corresponds to the number of colors proposed in the color palette when using the GIF file.
Remarks

Image found in a Web Camera control

Only the image displayed when <Image>.SaveGIF is run will be saved in GIF format. To save this image, you can also use:
Versions 16 and later
WEBDEV - Browser code

Drawing in browser code

The image saved in memory can be directly assigned to an Image control. Depending on the browser used, the result may not be the expected one.
For example, with the current version of FireFox (available when this documentation was published), the images in GIF format are not displayed properly.
This operating mode may be improved during the next upgraded versions of this browser.
New in version 16
WEBDEV - Browser code

Drawing in browser code

The image saved in memory can be directly assigned to an Image control. Depending on the browser used, the result may not be the expected one.
For example, with the current version of FireFox (available when this documentation was published), the images in GIF format are not displayed properly.
This operating mode may be improved during the next upgraded versions of this browser.
WEBDEV - Browser code

Drawing in browser code

The image saved in memory can be directly assigned to an Image control. Depending on the browser used, the result may not be the expected one.
For example, with the current version of FireFox (available when this documentation was published), the images in GIF format are not displayed properly.
This operating mode may be improved during the next upgraded versions of this browser.
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.
Component : wd240pnt.dll
Minimum version required
  • Version 24
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