execute batch-file with qt as a new process

I'm trying to execute a batch file.

This code should start cmd.exe in a detached process and execute deleteme.bat. The return value of exec->startDetached is true but the batch file is not executed.

Am I doing something wrong?

Here's my code:

QStringList arguments;
arguments << "/C deleteme.bat";
QProcess * exec = new QProcess();
exec->startDetached("cmd.exe", arguments);