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Deploying Qt DLL on Windows

I have a plugin for an application from another company. My plugin uses Qt, so it needs a Qt DLL. My problem is that all 4.x versions of Qt Dlls are called the same, e.g. .: QtCore4.dll. It is possible that some other plugin or other application that is inserted into the PATH environment variable has placed the Qt dll in the application folder. In this case, the plug-in does not start because it expects a different version of the DLL.

  • Q1. What is the suggested common practice for deploying a DLL?
  • Q2. What if the host application uses a different version of Qt. Will the host application and plugin allow windows to use different versions ()?

Thanks!

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