Manipulating Image controls programmatically

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Help / Developing an application or website / Controls, windows and pages / Controls: Available types / Image control

Overview
Displaying an image file in an Image control
In a page
Retrieving the name of the image file displayed in the Image control
In a page
Retrieving the position of the mouse in a clickable image
Clearing or reinitializing the content of an Image control
Properties specific to Image controls

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Manipulating Image controls programmatically

Overview

WINDEV, WEBDEV and WINDEV Mobile allow you to manipulate an Image control programmatically. To do so, use the variable of the Image control in the code.

The variable of Image control corresponds to the name of Image control. This variable is a text variable.

Displaying an image file in an Image control

In a page

To display an image file in an Image control, a simple assignment is sufficient.

If the image is available in the "<ProjectName>_WEB", directory, you have the ability to use the following syntaxes:

Server code:
<Champ Image> = <Nom image>

Note: In server code, if the image is available in a directory other than "<NomProjet>_WEB", it is necessary to:
- specify the full path of image.
- have read rights in this directory.
Browser code:
<Champ Image> = RépertoireWeb() + <Nom image>

Remark: In the "Detail" tab of the Image field description window, you can define the type of browser code assignment for compatibility.. If this option corresponds to "Path in _WEB directory", FolderWeb has no effect. The following syntax can be used:
<Champ image> = <Nom image>

Remark: If the field is associated with an item in a data file, assignment is automatically performed using the FileToPage function.. For more details, see Linking an Image control to an item.

Retrieving the name of the image file displayed in the Image control

In a page

To retrieve the name of the image displayed in an Image control:

perform a simple assignment. For example:
```
SAI_ContenuActuelImage = IMG_Image1
```
use the Value property.
use the Caption property (server code only).

In server code, these syntaxes are used to get the name of the image defined in the "General" tab of the control. Example: ./background.gif

In browser code, these syntaxes are used to retrieve the full image name on the server.

Example: http://localhost/addressbook_Web/background_fr.gif

Note: To retrieve the image (or its name) in the item associated with the Image field,

If the control is associated with a text item, the entered value is automatically retrieved via PageToFile. You also have the ability to use the following notation: CUSTOMER.NAME = EDT_Edit1.
If the control is associated with a binary memo, use HLinkMemo to associate the image file with the item.
For more details, see Linking an Image control to an item.

Retrieving the position of the mouse in a clickable image

Clearing or reinitializing the content of an Image control

To clear or reinitialize an Image control, all you have to do is assign an empty string to the Image control. For example:

IMG_MonImage = ""

Note: You can also use the dStartDrawing/dEndDrawing functions on the Image field..

Properties specific to Image controls