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- Overview
- Default events
- Events supported by WINDEV and WINDEV Mobile
- Optional events
- Optional event: Page loading error
HTML Display control processes
WINDEV and WINDEV Mobile include different WLanguage events associated with HTML Display Controls.
Events supported by WINDEV and WINDEV Mobile The following events appear by default in the code editor: | | Event | Runtime condition |
---|
Initialization | Executed when the window is opened. * | Click on a link | Executed when a link is clicked in the HTML Display control. Only external links (to another page) trigger this event. Internal links (to an anchor in the same page, for example) do not trigger this event. This event accepts parameters:
PROCEDURE ClicLien(sUrl is string, bDansNouvelleFenetre is boolean,
sDestination is string)
where <sURL> is an optional string that contains the URL of the link clicked in the HTML Display control. If this event returns False, the action associated with the link will not be performed.
Caution: the code must not contain slow processes or processes that allow the control to regain focus. In this case, the default action will still be performed.
PROCEDURE ClicLien(sUrl is string, bDansNouvelleFenetre is boolean,
sDestination is string)
IF bDansNouvelleFenetre THEN
AfficheNouveauNavigateur(sUrl)
RETURN False
ELSE
RETURN True
END
INTERNAL PROCEDURE AfficheNouveauNavigateur(sParamUrl) <delay=10ms>
<COMPILE IF TypeConfiguration = Android OR TypeConfiguration = iOS>
OpenMobileWindow(FEN_POPUP, sParamUrl)
<ELSE>
OpenChild(FEN_POPUP, sParamUrl)
<END>
END
| Before loading the HTML page | Executed before loading the HTML document in the HTML Display control. If the user navigates using links in the HTML Display control, this event is executed before each HTML document is loaded. This event accepts parameters:
PROCEDURE ChangePage(sUrl is string, sDestination is string)
where <sURL> is an optional string that contains the URL of the page to be displayed. If this event returns False, the page will not load. | After loading the HTML page | Executed after the HTML document has been loaded in the HTML Display control. If the user navigates using links in the HTML Display control, this event is executed after each HTML document has been loaded. | Load resources | Allows you to be notified and prevent application scripts or images from being loaded (for security purposes, for example). This event accepts parameters:
PROCEDURE ChargementRessources(sUrl is string, nType is int)
where: - <sURL> is a string that corresponds to the URL of the resource to be loaded.
- <nType> is a constant used to identify the type of resource to be downloaded:
- typehtmlImageRes: the resource to download is an image.
- typehtmlScriptRes: the resource to download is a script.
- typehtmlCssRes: the resource to download is a CSS style.
- typehtmlXMLHttpRequestRes: the resource to download is an XML document generated as response to an HTTP request.
- typehtmlOther: the resource to download is of an unknown type.
If this event returns False, the resource will not be loaded. | Right click on a link | Executed when the user right-clicks a link (to open a context menu). This event has the following format:
PROCEDURE ClicDroitLien(sUrl is string)
where <sURL> is a string that contains the URL of the link. |
(*) By default, the "Initialization" event of each control is executed according to the order in which the controls were created in the window. To change this order of execution: - On the "Ventana" tab, in the "Orden" group, click "Inicialización".
- In the window that appears, use the arrows on the right to change the order in which the controls are initialized.
Novedad versión 2024Optional event: Page loading error The optional "Page loading error" event is executed when an error is detected when loading a page in the control. This event provides details of the error encountered:
PROCEDURE ErreurChargement(sUrl is string, sErreur is string, nCodeErreur is int)
where: - <sURL> is a string that corresponds to the URL of the resource to be loaded.
- is a string containing the error message.
- is an integer Receiver corresponding to the error code.
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