Below, you have two new CMake features in Qt Creator 11:
Project file management
With Qt Creator 11, it is possible to add new / existing files to a CMake target. Renaming and deleting of source files via the project tree is also supported.
Qt Creator will look after the add_executable, add_library, qt_add_executable, qt_add_library function calls and add the source / resource files at the end.
If a custom CMake API is being used, a target_sources function call will be used instead.
Widgets Example
Qt Quick Example
For Qt Quick projects the qt_add_qml_module function is located. The added files will be prefixed with QML_FILES, SOURCES or RESOURCES function arguments.
CMakePresets reloading
Qt Creator 11 will display a CMake Presets project tree item for quicker CMake Presets access.
In the Build menu, there is a Reload CMake Presets entry which will re-create the Kits from the CMakePresets json files.
[]~(￣▽￣)~* cheers！exciting features
Is it possible to disable adding new file to a CMake target?
Also I have tried QtCreator 11 and noticed that it doesn't respect CMAKEINSTALLPREFIX variable anymore. On Win QtCreator uses: "C:\tmp\Qt-Creator-staging-6a40d27bf2a7205f\". How this can be disabled?
Disabling file adding is not supported. Regarding the second issue I have https://bugreports.qt.io/browse/QTCREATORBUG-29223 which might be related.
The only way to avoid adding a file, is to choose "None" for the "Add to project:" combo box on the last wizard page. (That can also be used to use a more sensible target than the auto-chosen one.)