[Qt-interest] Widget & Pop-up Focus

[Freddie Witherden]

Hi,

I am currently attempting to sub-class QDoubleSpinBox so that when it obtains 
click focus a slider is displayed below the widget in a pop-up -- allowing for 
easy editing of the spin box value.

Currently my plan is to write a QFrame sub-class and inside of it place a 
regular QSlider and then have my QDoubleSpinBox sub-class create an instance 
of this. (I am basing my work off of the QtColorPicker solution.)

But, I am having some focus-related issues. Firstly, I wish for the slider to 
only appear on ClickFocus events, as opposed to keyboard focus. Secondly, when 
the pop-up is displayed ideally I would like it to only have mouse focus (so 
keyboard taps still change the DoubleSpinBox).

The QtColorPicker solution does some of its work by using another event loop. 
However, I am unsure if this is the best way to achieve what I require. Is the 
focus granularity which I require available in Qt?

Regards, Freddie.