Testing doesn't work on Windows

[BertrandDecoster]

You get the following error:

error: cannot find -lWidgetsLib
error: ld returned 1 exit status

because the .pro files are for Unix. I suggest you change the LIBS+= lines with this

CONFIG( debug, debug|release ) {
    LIBSUFFIX = d
    win32:LIBS += -L../WidgetsLib/debug -lWidgetsLib
    win32:PRE_TARGETDEPS += ../WidgetsLib/debug/libWidgetsLib.a
} else {
    LIBSUFFIX =
    win32:LIBS += -L../WidgetsLib/release
    win32:PRE_TARGETDEPS += ../WidgetsLib/release/libWidgetsLib.a
}
unix:LIBS += -L ../WidgetsLib
unix:PRE_TARGETDEPS += ../WidgetsLib/WidgetsLib$${LIBSUFFIX}.a

[vivaladav]

Thanks @BertrandDecoster .
Right now I don't have access to a Windows machine, but I'll update the project as soon as I can test things.