Console Process Groups
When a process uses the CreateProcess function to create a new console process, it can specify the CREATE_NEW_PROCESS_GROUP flag to make the new process the root process of a console process group. The process group includes all processes that are descendants of the root process.
A process can use the GenerateConsoleCtrlEvent function to send a CTRL+C or CTRL+BREAK signal to all processes in a console process group. The signal is only received by those processes in the group that are attached to the same console as the process that called GenerateConsoleCtrlEvent.
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