On 15/07/2022 07:48, Jan Grulich wrote:
I'm 100% sure Qt doesn't break ABI compatibility between patch releases
for public API.
Would you be a happy paying customer if they break ABI for a library you
are paying for?
With private API there is no such promise, but I don't think ABI
breakages will happen at
this point.
For example you can build Telegram Desktop against 5.15.0 and then try
to run it under 5.15.4. The GUI will be completely broken and unusable.
Also messages will be displayed vertically - each letter on a new line.
Same for Qt 6.
Telegram is not a great example, or rather it's a great example of an app that
should always
depend on the exact Qt version it was built against. They are using private API
more than
any other application with tons of custom implementations.
Now they only use the private APIs of QtGui and QtWayland.
--
Sincerely,
Vitaly Zaitsev (vit...@easycoding.org)
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