I used to work with Qt5/Qt4, where you can open a project by clicking the .pro file in the folder of the project. But today after downloading a QT6 project, I find I do not know how to open the project in Qt Creator. There is no .pro file in the project’s folder. There is a CMakeLists.txt under the directory of the project. I know Qt6 has switched from QMake to CMake. But clicking on CMakeLists.txt just displays its content in notepad. In fact, you need to run Qt Creator first, then click “Open Project” and select the CMakeLists.txt file to open the whole project in Qt Creator. Qt Creator will ask you to choose a build kit to configure the project.