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Adding Qt backend support to already deployed application: rebuild is needed or replacing opencv_world3xx.dll suffices?

Hello.

Let's say I already deployed a C++ Windows application with its companion opencv_world320.dll which was built without Qt option.

Now user would like to have all Qt backend facilities: in addition to replace the DLL with the "Qt enabled" version, does my application need ALSO to be rebuilt against the opencv_world320.lib which the "Qt" DLL was built?

Adding Qt backend support to already deployed application: rebuild is needed or replacing opencv_world3xx.dll suffices?

Hello.

Let's say I already deployed a C++ Windows application with its companion opencv_world320.dll which was built without Qt option.

Now user would like to have all Qt backend facilities: in addition to replace the DLL with the "Qt enabled" version, does my application need ALSO to be rebuilt against the opencv_world320.lib which created with the "Qt" DLL was built?"Qt enabled" DLL?