The most important step after installation is setting up your . A Kit defines the compiler, the debugger, and the Qt version you are using. Go to Tools > Options > Kits . Auto-detect your installed compilers.

Despite the availability of Qt Creator 13 and beyond, version 4 continues to be a popular choice for several key reasons:

Refresh the repository to see older versions available for side-by-side installation. 3. Open Source Mirrors

Many long-term industrial projects are pinned to specific Qt versions (like Qt 5.6 or 5.9) that pair perfectly with the Qt Creator 4 interface.

Once you have completed your , follow these steps to get up and running: Cross-Platform Support

A drag-and-drop editor for UI development using QML.