How do I interface XWT to custom hardware, like barcode scanners?
If you’re using XWT Helium (or newer), you can use the function xwt.newBrowserWindow(url) to open a new browser window. Pass the URL of a platform-specific binary (such as a Win32 .exe) as the argument. Then tell your users to click “run” instead of “save”. The binary you supply should act as an XML-RPC server, accepting connections only from 127.0.0.1 (for security). Once the user clicks “run”, your XWT application can make calls to the binary (using xwt.xmlrpc(“http://localhost:someport/”). The platform-specific binary can then talk to whatever custom hardware you’re using, acting as an intermediary between it and XWT.
