[Interest] QIcon on/off doesn't work on QAction

[Sensei]

On 7/3/13 2:13pm, Christoph Feck wrote:
> On Wednesday 03 July 2013 11:36:26 Sensei wrote:
>> original version and the scaled down one, but it doesn't work: when
>> I click on the toolbar's action the icon doesn't get blue.
>
> Did you check in the QToolBar sources, that buttons there indeed use
> the "On" state to denote pressed icons? From looking at the image in
> the QIcon documentation, you should use a different mode.
>

I've proceeded in adding the two icons (gray and blue) in every 
combination of Mode and State. Nothing. I might be missing something here.

However, if I don't add the original one, but create a new light gray 
version, it *darkens* when clicked:

     QIcon i;

     gray.fill(QColor(64 + 16, 64 + 16, 64 + 16));
     gray.setMask(orig.createMaskFromColor(Qt::transparent));

     blue.fill(QColor(64 - 32, 160 - 32, 255 - 32));
     blue.setMask(orig.createMaskFromColor(Qt::transparent));

     i.addPixmap(blue, QIcon::Normal, QIcon::On);
     i.addPixmap(gray, QIcon::Normal, QIcon::Off);


That's fine, but I'd like to understand better which states and modes 
are used. I find it surprising that this might be a color issue.