Using GTK+ with Broadway — HTML-specific aspects of using GTK+
The GDK Broadway backend provides support for displaying GTK+ applications in a web browser, using HTML5 and web sockets. To run your application in this way, select the Broadway backend by setting
GDK_BACKEND=broadway. Then you can make your application appear in a web browser by pointing it at
http://127.0.0.1:8080. Note that you need to enable web sockets in your web browser.
You can choose a different port from the default 8080 by setting the
BROADWAY_DISPLAY environment variable to the port that you want to use.
It is also possible to use multiple GTK+ applications in the same web browser window, by using the Broadway server, broadwayd, that ships with GTK+. To use broadwayd, start it like this:
Then point your web browser at
http://127.0.0.1:8085. Start your applications like this:
GDK_BACKEND=broadway BROADWAY_DISPLAY=:5 gtk3-demo
BROADWAY_DISPLAY. Specifies the Broadway display number. The default display is 0. The display number determines the port to use when connecting to a Broadway application via the following formula:
port = 8080 + display
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