Turn on QML Language Server

For several programming languages, a language server offers information about the code to IDEs as long as they support communication via the language server protocol (LSP). The IDE can then offer services, such as code completion.

Turn on QML Language Server to get code editing services when developing Qt Quick applications if:

• The default Qt version supports QML Language Server (available since Qt 6.5).
• The Visual Studio version supports LSP.

The services you get depend on the Qt version and Visual Studio version that you use.

To turn on QML Language Server and set options for running it:

1. Go to Extensions > Qt VS Tools > Options > Qt > General > QML Language Server.

   

2. In Enable, select Enable to turn on QML Language Server.
3. In Log, select Enable to write LSP messages to a log file in a temporary folder.
4. In Log size, set the maximum size of the log file in KB.
5. In QML Language Server path, select the path to the QML Language Server version you want to use. Leave the field empty to use the default version that Qt VS Tools provides. However, if you develop with a Qt version earlier than 6.5.0, Qt VS Tools tries to start QML Language Server for that version, and if it is not available, the default version.
6. In Search for updates, select Enable to search for QML Language Server updates every 24 hours after Visual Studio has been idle for 60 seconds.

Receive update notifications

To receive notifications for QML Language Server updates:

1. Go to Extensions > Qt VS Tools > Options > Qt > General > Notifications.

   

2. In QML Language Server update, select Enable.