To make the existing GUI to open in web browser right click on the Application name on the Project tree and select Add New....

Under CDP select Add Web UI and choose 'Convert Existing' in the wizard.

You have now done the setup to be able to open your native GUI in web browser.

To open the GUI in web browser do the following:

When the application is running and connected, click on the application in Configure mode Project tree and choose the Table Editor tab. Go to the Properties section, find the property called WebURL. This is the link for the web browser. You can also open the browser directly by clicking the icon next to the url. Note that there is a WebFilesToServe property in the application configuration that must list all files and folders that should be accessible in the web browser. If the WebFilesToServe is not set up correctly, then the web browser might not show the content correctly, or it might not function correctly.