FocusNextChild in QCheckBox sequence

[ale82]

Hi,
It happens that when I try to change the focus with focusNextChild() function it works fine with QLineEdit, but jumps twice with QCheckBox.
I associated the focusNextChild function to the release event of a key, I can see the correct focus sequence until it reaches the first checkbox (there are tow in sequence), then pressing the key it jumps, passing by the second but not stopping, to the next object.

Anyone seen this before or have some suggestion?

Thanks!