Hi,

Qt4 and Qt5 both have a "feature" where holding down the Meta key (Command on 
OS X) while scrolling a view causes text in the view to zoom in or out. This 
also works with the 2-finger scroll that most trackpads provide nowadays.

Under Qt4 it doesn't work very nicely with inertial scrolling however, at least 
not when the inertia is simulated by the input handler. If you give the view a 
good push and then use the Meta key to use a keyboard shortcut before the 
scrolling stopped, the text is zoomed. That's very annoying, and someone 
rightly managed to fix this in Qt5. There, scrolling continues even after 
pressing the Meta key, and from what I see it also continues if you activate a 
shortcut.

Where is this achieved, and would it be possible to backport it to Qt4 (a local 
patch would be fine with me)?

Thanks,
René
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