Can't magnify with 'm' key while using eye dropper tool

dpaint always made a point of being able to use the keys in all situations (the original manual has a passage about this that I could did out). Anyway, in pydpainter it isn't possible to do this:

* start colour picking
* realise you need to zoom to get the pixel you want
* hit 'm' to zoom

I think the shortcut keys should still work while using the eye dropper/colour picker