From Xojo Documentation


Uses the appropriate web browser application (based on the user’s Internet settings) to go to the HTTP URL specified.



Part Type Description
URL String The HTTP address to go to. Other types of addresses (ftp, smb, mailto) depend on the operating system and the browser.
In a Web Edition application, it replaces the existing page with the passed URL.


Displays the supplied URL in the user's default web browser. If the browser is not open, it will launch the browser. Whether the URL opens in a new tab or a new window is controlled by the user's browser settings.

ShowURL is not global in a web app so you need to use WebControl.ShowURL or WebSession.GotoURL instead.

A URL is an address for Internet locations such as web sites, FTP and email addresses.

Some web browsers have a limit on the length of a URL. These are common prefixes:

URL Prefix Type Notes
http:// web site Displays in the default web browser.
mailto: email Opens the default email client with the supplied email address filled in.
ftp:// file transfer protocol Opens the default FTP application to download the specified file.

Sample Code

This desktop code launches the user's chosen web browser and go to the Xojo web page.


This desktop code launches the user's chosen FTP client application and go to an FTP site.


This desktop code launches the user's chosen email application and create a new email message, with the specified email address in the "To" area.



Desktop and iOS project types of all Desktop, iOS and iPadOS operating systems.

See Also

HTMLViewer, WebHTMLViewer classes