How do to add a library to my project?

**kuzulis** · 29th September 2009, 05:25

Simply connect the *. dll - not using QLibrary

IMHO

**faldzip** · 29th September 2009, 07:59

can you show us you *.pro file?

**kuzulis** · 29th September 2009, 08:32

here : http://www.prog.org.ru/topic_8259_0.html

PS: Google translator to help

**N3wb** · 2nd October 2009, 04:32

Faldżip, thanks so much for helping. Here's my .pro file:

Qt Code:

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SOURCES += main.cpp \
    mainwindow.cpp \
    baction.cpp \
    caction.cpp \
    arrowbutton.cpp
HEADERS += main.h \
    mainwindow.h \
    baction.h \
    caction.h \
    arrowbutton.h
OTHER_FILES += readme.txt
 
INCLUDEPATH += C:\Users\Nathan\Desktop\qextserialport
LIBS += -LC:\Users\Nathan\Desktop\qextserialport -lqextserialport
 
CONFIG(debug, debug|release):LIBS += -lqextserialportd
CONFIG(release, debug|release):LIBS += -lqextserialport

SOURCES += main.cpp \
    mainwindow.cpp \
    baction.cpp \
    caction.cpp \
    arrowbutton.cpp
HEADERS += main.h \
    mainwindow.h \
    baction.h \
    caction.h \
    arrowbutton.h
OTHER_FILES += readme.txt

INCLUDEPATH += C:\Users\Nathan\Desktop\qextserialport
LIBS += -LC:\Users\Nathan\Desktop\qextserialport -lqextserialport

CONFIG(debug, debug|release):LIBS += -lqextserialportd
CONFIG(release, debug|release):LIBS += -lqextserialport

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The paths I put in there are to this folder: http://www.roboticsguy.com/qextserialport.zip

I'm really over my head here, I've never used DLLs before and have no idea what I'm doing

I really appreciate your time and any advice you could give me.

**faldzip** · 2nd October 2009, 06:11

Qt Code:

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LIBS += -LC:\Users\Nathan\Desktop\qextserialport -lqextserialport
 
CONFIG(debug, debug|release):LIBS += -lqextserialportd
CONFIG(release, debug|release):LIBS += -lqextserialport

LIBS += -LC:\Users\Nathan\Desktop\qextserialport -lqextserialport
 
CONFIG(debug, debug|release):LIBS += -lqextserialportd
CONFIG(release, debug|release):LIBS += -lqextserialport

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in debug version you are linking to both versions of library... so remove -lqextserialport from the first line I pasted.
What does it mean it is not working? What errors you get? Are you using MinGW or VisualStudio?