Best way to use dll in project.
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Just put the DLL in a central place and update the PATH environment variable in the Run part of the project panel.
You need to link to the corresponding lib file not the DLL.
Hope it help
but will you please elaborate it , what exactly should I do?
In your pro file:
INCLUDEPATH += PATH_TO_HEADERS
LIBS += -Lpath/to/folder/containing/mylib.lib -lmylib