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

asked 2017-02-02 02:33:09 -0600

updated 2017-02-02 02:39:09 -0600

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 created with the "Qt enabled" DLL?

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answered 2017-02-02 02:45:26 -0600

berak
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does my application need ALSO to be rebuilt against the opencv_world320.lib which the "Qt" DLL was built?

YES. (you also probably need to change some code in your application, where it should be using Qt functionality)

you'd have to:

install Qt on your dev box
rebuild opencv from src with Qt enabled
rebuild your app, so it's actually using qt functionality
either have the client install te same Qt version you used, or deploy the Qt dll's along with your app