Making an app launch an app

[nicky j]

Hey!
I was wondering if there is a way to launch an application from another application. I have made 2 applications (app A and app B for our purposes). Is there a way that I could create a button in App A that when clicked would launch App B? The answer is probably obvious, but any help would be greatly appreciated.
Thanks!

[juansta]

Does QProcess do what you need?

[nicky j]

Yes, it looks like it should. How would I go about using it though?

[juansta]

Something like this I guess...
Have ou read over the doco?
@QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "", tr("Files (.)"));
QProcess *Process = new QProcess (this);

Process ->start(fileName);

Process ->waitForFinished ();@

[Gennon]

Or if you want to have the first app to fire and forget you can use QProcess::startDetached().

http://qt-project.org/doc/qt-5.0/qtcore/qprocess.html#static-public-members

But then you lose the control of the new app.

[nicky j]

thats a neat trick. Thanks!