You can select files or folders and drop them into projects in the Project Explorer view:
To use drag-and-drop:
Create a new project. If your existing code has an existing build procedure, use a C Project or C++ Project. (If your project is organized according to the recursive makefile conventions, you can use a QNX C Project or QNX C++ Project).
Switch to the Project Explorer view.
Select one or more source files or folders from the host system's file browser, then drag them into the project. The files are copied into your project workspace.