creating cpp library using qt

[amruz]

@jsulm when i try to include this library in a widget application also i am getting the same error..

this is the .pro file of my widgetapplication

#-------------------------------------------------
#
# Project created by QtCreator 2017-07-27T17:19:21
#
#-------------------------------------------------

QT       += core gui widgets

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = sharedlibtryinwidget
TEMPLATE = app


SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h

DEPENDPATH += /home/amruz/worksharedlib
INCLUDEPATH += /home/amruz/worksharedlib
LIBS += -L/home/amruz/build-worksharedlib-Desktop_Qt_5_7_0_GCC_64bit-Debug -lworksharedlib

[amruz]

@amruz i also found that when destructor is not included this type of error may occur..but when i added destructor also the same problem exists

[amruz]

@jsulm it worked finally! thanks a lot for all the help

the problem was qobject in the library , i removed it and it worked.