<Image>.SaveGIF (Function)

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<Image>.SaveGIF (Function)

In french: <Image>.SauveGIF

Saves an image:

in a GIF file.
in memory.

This image corresponds to the image contained in a Image control.

Remarks:

Only the visible part of the 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.

In browser code, this function can only be used to save an image in memory.

Versions 16 and later

This function is now available in Browser code.

In browser code, this function can only be used to save an image in memory.

New in version 16

This function is now available in Browser code.

In browser code, this function can only be used to save an image in memory.

This function is now available in Browser code.

In browser code, this function can only be used to save an image in memory.

Versions 17 and later

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.

New in version 17

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

Caution: A specific configuration is required to use this function in Linux. For more details, see The drawings.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Example

// Saves in memory the image found in "IMG_ImageDrawing"
ResSave = IMG_ImageDrawing.SaveGIF(inMemory)

// Saves the image found in "IMG_ImageDrawing" in "C:\Documents\Image.GIF"
ResSave = IMG_ImageDrawing.SaveGIF("C:\Documents\Image.GIF")

Syntax

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 get more details on the error, use ErrorInfo with the errMessage constant.

<Image control>: Control name

Name of the control to be used:
Name of the Image, Bar Code or Web Camera control to be used. Image controls in a report cannot be used.
Name of the Image or Web Camera control to be used.

<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.

Syntax not available

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), ...
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 the Image control to be used:
Name of the Image, Bar Code or Web Camera control to be used. Image controls in a report cannot be used.
Name of the Image or Web Camera control to be used.

<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 executed is saved as a GIF image. To save this image, you can also use:

the <Camera>.Capture function: the image will be saved in BMP format.
the <Image>.SaveBMP function: the image will be saved in BMP format or in memory.
the <Image>.SaveJPEG function: the image will be saved in JPEG format or in memory.
the <Image>.SavePNG function: the image will be saved in PNG format or in memory.

Versions 16 and later

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), images in GIF format are not displayed properly.

This may be fixed in future browser updates.

New in version 16

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), images in GIF format are not displayed properly.

This may be fixed in future browser updates.

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), images in GIF format are not displayed properly.

This may be fixed in future browser updates.

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.

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