Inter-process Communication with Qt: Remote Objects Explained

Continuing the "Inter-process Communication with Qt" series, where we explore how to bridge the gap between software and hardware using Qt's powerful communication modules.

Do you need to share objects between processes or even across different devices? Qt Remote Objects (QtRO) is a powerful, protocol-agnostic module that makes inter-process communication (IPC) look and feel like standard Qt development.

In this deep dive, Christoph Schleifenbaum explores how to bridge systems using a smart home air conditioner example.

You will learn:

* The core architecture of QtRO (Source vs. Replica).

* How to define interfaces using `**.rep**` files and the replica compiler (`**repc**`).

* Building a server application to host objects and a client application (using both C++ Widgets and QML) to interact with them remotely.

* Handling synchronization and state changes across the network.

0:00 Intro

0:31 What is QtRemoteObjects

1:06 Use Cases

2:38 Key Features

3:34 Example Introduction

5:10 Example server

8:56 Example widgets application

12:06 Example QML application

14:23 Conclusion

15:57 Outro

Links

QtRemoteObjects documentation

CMake qt_add_repc_replicas documentation

CMake qt_add_repc_sources documentation

You can find the code for this video here

All inter-process communication videos.