What is the difference between QProcess::start and QProcess::startDetached?

c++, qprocess, qt

Solution

If you use `start`, termination of the caller process will cause the termination of the called process as well. If you use `startDetached`, after the caller is terminated, the child will continue to live. For example:

QProcess * p = new QProcess();
p->start("some-app");
delete p;// <---some-app will be terminated

QProcess * p = new QProcess();
p->startDetached("some-app");
delete p;// <---some-app will continue to live

Problem

The Qt documentation gives this explanation: `QProcess::start`: Starts the given program in a new process, if none is already running, passing the command line arguments in arguments. `QProcess::startDetached`: Starts the program program with the arguments arguments in a new process, and detaches from it. What is the difference between the two? Is the difference only that you can start just one instance of a program using `QProcess::start` and many instances using `QProcess::startDetached`?

Original source