[SOLVED]Include external dynamic library in windows application

arashjfz

Hello my dear friends
I have a Project Named Stream with bellow .Pro file

@
#-------------------------------------------------

Project created by QtCreator 2014-05-31T13:54:39

#-------------------------------------------------

QT -= gui

TARGET = Stream
TEMPLATE = lib

DEFINES += STREAM_LIBRARY

SOURCES += stream.cpp
iodevicesteam.cpp
memorystream.cpp
mergedstream.cpp
substream.cpp
streamhelper.cpp
unlimitedstream.cpp
itemclosemanagement.cpp

HEADERS += stream.h
stream_global.h
iodevicesteam.h
memorystream.h
mergedstream.h
substream.h
streamhelper.h
unlimitedstream.h
itemclosemanagement.h
IDisposable.h

unix:!symbian {
maemo5 {
target.path = /opt/usr/lib
} else {
target.path = /usr/lib
}
INSTALLS += target
}
@

it is shared c++ library.

and I tried to add this Project (Stream) to another console application using add external library of qt creator.this is the code that qtcreator creaded in pro file of that console application.

@
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../build-Stream-Desktop_Qt_5_1_0_MSVC2012_64bit-Debug/release/ -lStream
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../build-Stream-Desktop_Qt_5_1_0_MSVC2012_64bit-Debug/debug/ -lStream

INCLUDEPATH += $$PWD/../../Stream
DEPENDPATH += $$PWD/../../Stream
@

but after this task linker can not link stream library to my console application

@
main.obj:-1: error: LNK2019: unresolved external symbol "public: static bool __cdecl StreamHelper::CopyStream(class Stream *,class Stream *,__int64)" (?CopyStream@StreamHelper@@SA_NPEAVStream@@0_J@Z) referenced in function main
@

let me tell you that linking stream to any library in linux is like a piece of cake
any help appreciated

arashjfz

I found the problem
in windows share library all named variables must be exported. In this case they can be used in other Project.(In Unix base os all symbols will be exported automatically.