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Unable to link Qt dll

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msvc2013shared librarylinker errors
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  • A Offline
    A Offline
    Andrea
    wrote on last edited by
    #1

    Hi everybody,

    I've created a simple shared library, containing just one class that does nothing, and it builds correctly.
    Now I 'd like to use this library in a Qt application: so right click on the project name, "Add Libraray" and I've specified the path to the .lib file of my dll.
    Try build the application, but still getting linker error: LNK1104 cannot open file "myLibrary.lib"

    I'm using Qt5.9 on Windows 64bits, both to build the shared library and the application, with msvc 2013.

    Thanks
    Andrea

    jsulmJ 1 Reply Last reply
    0
    • A Andrea

      Hi everybody,

      I've created a simple shared library, containing just one class that does nothing, and it builds correctly.
      Now I 'd like to use this library in a Qt application: so right click on the project name, "Add Libraray" and I've specified the path to the .lib file of my dll.
      Try build the application, but still getting linker error: LNK1104 cannot open file "myLibrary.lib"

      I'm using Qt5.9 on Windows 64bits, both to build the shared library and the application, with msvc 2013.

      Thanks
      Andrea

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @Andrea Can you show the pro file and the linker call (from compile output)?

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      1 Reply Last reply
      1
      • A Offline
        A Offline
        Andrea
        wrote on last edited by
        #3

        Hi @jsulm

        here the .pro file of the application

        QT       += core gui
        
        greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
        
        TARGET = dllTest
        TEMPLATE = app
        
        # The following define makes your compiler emit warnings if you use
        # any feature of Qt which has been marked as deprecated (the exact warnings
        # depend on your compiler). Please consult the documentation of the
        # deprecated API in order to know how to port your code away from it.
        DEFINES += QT_DEPRECATED_WARNINGS
        
        # You can also make your code fail to compile if you use deprecated APIs.
        # In order to do so, uncomment the following line.
        # You can also select to disable deprecated APIs only up to a certain version of Qt.
        #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
        
        
        SOURCES += \
                main.cpp \
                mainwindow.cpp
        
        HEADERS += \
                mainwindow.h
        
        
        win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../Prova/testLibrary/release/ -ltestLibrary
        else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../Prova/testLibrary/debug/ -ltestLibrary
        
        INCLUDEPATH += $$PWD/../Prova/testLibrary/release
        DEPENDPATH += $$PWD/../Prova/testLibrary/release```
        

        And here the linker output

        Error	38	error LNK1120: 12 unresolved externals	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\Release\ClassProva.dll	ClassProva
        Error	32	error LNK2019: unresolved external symbol "public: __thiscall QString::~QString(void)" (??1QString@@$$FQAE@XZ) referenced in function "public: void * __thiscall QString::`scalar deleting destructor'(unsigned int)" (??_GQString@@$$FQAEPAXI@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	34	error LNK2019: unresolved external symbol "public: __thiscall QString::QString(class QString const &)" (??0QString@@$$FQAE@ABV0@@Z) referenced in function "private: void __thiscall QList<class QString>::node_copy(struct QList<class QString>::Node *,struct QList<class QString>::Node *,struct QList<class QString>::Node *)" (?node_copy@?$QList@VQString@@@@$$FAAEXPAUNode@1@00@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	33	error LNK2019: unresolved external symbol "public: static void __cdecl QListData::dispose(struct QListData::Data *)" (?dispose@QListData@@$$FSAXPAUData@1@@Z) referenced in function "private: void __thiscall QList<class QString>::dealloc(struct QListData::Data *)" (?dealloc@?$QList@VQString@@@@$$FAAEXPAUData@QListData@@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	35	error LNK2019: unresolved external symbol "public: struct QListData::Data * __thiscall QListData::detach(int)" (?detach@QListData@@$$FQAEPAUData@1@H@Z) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	36	error LNK2019: unresolved external symbol "public: void * * __thiscall QListData::begin(void)const " (?begin@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	37	error LNK2019: unresolved external symbol "public: void * * __thiscall QListData::end(void)const " (?end@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	26	error LNK2028: unresolved token (0A000200) "public: __thiscall QString::QString(class QString const &)" (??0QString@@$$FQAE@ABV0@@Z) referenced in function "private: void __thiscall QList<class QString>::node_copy(struct QList<class QString>::Node *,struct QList<class QString>::Node *,struct QList<class QString>::Node *)" (?node_copy@?$QList@VQString@@@@$$FAAEXPAUNode@1@00@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	27	error LNK2028: unresolved token (0A000207) "public: __thiscall QString::~QString(void)" (??1QString@@$$FQAE@XZ) referenced in function "public: void * __thiscall QString::`scalar deleting destructor'(unsigned int)" (??_GQString@@$$FQAEPAXI@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	28	error LNK2028: unresolved token (0A000241) "public: void * * __thiscall QListData::begin(void)const " (?begin@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	29	error LNK2028: unresolved token (0A000242) "public: void * * __thiscall QListData::end(void)const " (?end@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	30	error LNK2028: unresolved token (0A000535) "public: struct QListData::Data * __thiscall QListData::detach(int)" (?detach@QListData@@$$FQAEPAUData@1@H@Z) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        Error	31	error LNK2028: unresolved token (0A00058E) "public: static void __cdecl QListData::dispose(struct QListData::Data *)" (?dispose@QListData@@$$FSAXPAUData@1@@Z) referenced in function "private: void __thiscall QList<class QString>::dealloc(struct QListData::Data *)" (?dealloc@?$QList@VQString@@@@$$FAAEXPAUData@QListData@@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
        
        jsulmJ 1 Reply Last reply
        0
        • A Andrea

          Hi @jsulm

          here the .pro file of the application

          QT       += core gui
          
          greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
          
          TARGET = dllTest
          TEMPLATE = app
          
          # The following define makes your compiler emit warnings if you use
          # any feature of Qt which has been marked as deprecated (the exact warnings
          # depend on your compiler). Please consult the documentation of the
          # deprecated API in order to know how to port your code away from it.
          DEFINES += QT_DEPRECATED_WARNINGS
          
          # You can also make your code fail to compile if you use deprecated APIs.
          # In order to do so, uncomment the following line.
          # You can also select to disable deprecated APIs only up to a certain version of Qt.
          #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
          
          
          SOURCES += \
                  main.cpp \
                  mainwindow.cpp
          
          HEADERS += \
                  mainwindow.h
          
          
          win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../Prova/testLibrary/release/ -ltestLibrary
          else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../Prova/testLibrary/debug/ -ltestLibrary
          
          INCLUDEPATH += $$PWD/../Prova/testLibrary/release
          DEPENDPATH += $$PWD/../Prova/testLibrary/release```
          

          And here the linker output

          Error	38	error LNK1120: 12 unresolved externals	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\Release\ClassProva.dll	ClassProva
          Error	32	error LNK2019: unresolved external symbol "public: __thiscall QString::~QString(void)" (??1QString@@$$FQAE@XZ) referenced in function "public: void * __thiscall QString::`scalar deleting destructor'(unsigned int)" (??_GQString@@$$FQAEPAXI@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	34	error LNK2019: unresolved external symbol "public: __thiscall QString::QString(class QString const &)" (??0QString@@$$FQAE@ABV0@@Z) referenced in function "private: void __thiscall QList<class QString>::node_copy(struct QList<class QString>::Node *,struct QList<class QString>::Node *,struct QList<class QString>::Node *)" (?node_copy@?$QList@VQString@@@@$$FAAEXPAUNode@1@00@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	33	error LNK2019: unresolved external symbol "public: static void __cdecl QListData::dispose(struct QListData::Data *)" (?dispose@QListData@@$$FSAXPAUData@1@@Z) referenced in function "private: void __thiscall QList<class QString>::dealloc(struct QListData::Data *)" (?dealloc@?$QList@VQString@@@@$$FAAEXPAUData@QListData@@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	35	error LNK2019: unresolved external symbol "public: struct QListData::Data * __thiscall QListData::detach(int)" (?detach@QListData@@$$FQAEPAUData@1@H@Z) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	36	error LNK2019: unresolved external symbol "public: void * * __thiscall QListData::begin(void)const " (?begin@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	37	error LNK2019: unresolved external symbol "public: void * * __thiscall QListData::end(void)const " (?end@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	26	error LNK2028: unresolved token (0A000200) "public: __thiscall QString::QString(class QString const &)" (??0QString@@$$FQAE@ABV0@@Z) referenced in function "private: void __thiscall QList<class QString>::node_copy(struct QList<class QString>::Node *,struct QList<class QString>::Node *,struct QList<class QString>::Node *)" (?node_copy@?$QList@VQString@@@@$$FAAEXPAUNode@1@00@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	27	error LNK2028: unresolved token (0A000207) "public: __thiscall QString::~QString(void)" (??1QString@@$$FQAE@XZ) referenced in function "public: void * __thiscall QString::`scalar deleting destructor'(unsigned int)" (??_GQString@@$$FQAEPAXI@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	28	error LNK2028: unresolved token (0A000241) "public: void * * __thiscall QListData::begin(void)const " (?begin@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	29	error LNK2028: unresolved token (0A000242) "public: void * * __thiscall QListData::end(void)const " (?end@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	30	error LNK2028: unresolved token (0A000535) "public: struct QListData::Data * __thiscall QListData::detach(int)" (?detach@QListData@@$$FQAEPAUData@1@H@Z) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          Error	31	error LNK2028: unresolved token (0A00058E) "public: static void __cdecl QListData::dispose(struct QListData::Data *)" (?dispose@QListData@@$$FSAXPAUData@1@@Z) referenced in function "private: void __thiscall QList<class QString>::dealloc(struct QListData::Data *)" (?dealloc@?$QList@VQString@@@@$$FAAEXPAUData@QListData@@@Z)	C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\ClassProva\ClassProva.obj	ClassProva
          
          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #4

          @Andrea I actually wanted to see how the linker was called to see the paths passed to it.
          Do you have any blanks in the paths?

          https://forum.qt.io/topic/113070/qt-code-of-conduct

          1 Reply Last reply
          0
          • A Offline
            A Offline
            Andrea
            wrote on last edited by
            #5

            Oh, yeah, sorry..here it is

            1>------ Rebuild All started: Project: ClassProva, Configuration: Release Win32 ------
            1>  Stdafx.cpp
            1>  AssemblyInfo.cpp
            1>  ClassProva.cpp
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(497): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(498): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(499): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(501): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(503): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(505): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(506): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(508): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(509): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(511): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(512): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(513): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(514): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(515): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(517): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(519): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(521): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(523): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(530): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(531): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(532): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(556): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(557): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(558): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>C:\Qt\Qt5.9.2\5.9.2\msvc2013_64\include\QtCore/qchar.h(559): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
            1>  Generating Code...
            1>  .NETFramework,Version=v4.5.AssemblyAttributes.cpp
            1>ClassProva.obj : error LNK2028: unresolved token (0A000200) "public: __thiscall QString::QString(class QString const &)" (??0QString@@$$FQAE@ABV0@@Z) referenced in function "private: void __thiscall QList<class QString>::node_copy(struct QList<class QString>::Node *,struct QList<class QString>::Node *,struct QList<class QString>::Node *)" (?node_copy@?$QList@VQString@@@@$$FAAEXPAUNode@1@00@Z)
            1>ClassProva.obj : error LNK2028: unresolved token (0A000207) "public: __thiscall QString::~QString(void)" (??1QString@@$$FQAE@XZ) referenced in function "public: void * __thiscall QString::`scalar deleting destructor'(unsigned int)" (??_GQString@@$$FQAEPAXI@Z)
            1>ClassProva.obj : error LNK2028: unresolved token (0A000241) "public: void * * __thiscall QListData::begin(void)const " (?begin@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)
            1>ClassProva.obj : error LNK2028: unresolved token (0A000242) "public: void * * __thiscall QListData::end(void)const " (?end@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)
            1>ClassProva.obj : error LNK2028: unresolved token (0A000535) "public: struct QListData::Data * __thiscall QListData::detach(int)" (?detach@QListData@@$$FQAEPAUData@1@H@Z) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)
            1>ClassProva.obj : error LNK2028: unresolved token (0A00058E) "public: static void __cdecl QListData::dispose(struct QListData::Data *)" (?dispose@QListData@@$$FSAXPAUData@1@@Z) referenced in function "private: void __thiscall QList<class QString>::dealloc(struct QListData::Data *)" (?dealloc@?$QList@VQString@@@@$$FAAEXPAUData@QListData@@@Z)
            1>ClassProva.obj : error LNK2019: unresolved external symbol "public: __thiscall QString::~QString(void)" (??1QString@@$$FQAE@XZ) referenced in function "public: void * __thiscall QString::`scalar deleting destructor'(unsigned int)" (??_GQString@@$$FQAEPAXI@Z)
            1>ClassProva.obj : error LNK2019: unresolved external symbol "public: static void __cdecl QListData::dispose(struct QListData::Data *)" (?dispose@QListData@@$$FSAXPAUData@1@@Z) referenced in function "private: void __thiscall QList<class QString>::dealloc(struct QListData::Data *)" (?dealloc@?$QList@VQString@@@@$$FAAEXPAUData@QListData@@@Z)
            1>ClassProva.obj : error LNK2019: unresolved external symbol "public: __thiscall QString::QString(class QString const &)" (??0QString@@$$FQAE@ABV0@@Z) referenced in function "private: void __thiscall QList<class QString>::node_copy(struct QList<class QString>::Node *,struct QList<class QString>::Node *,struct QList<class QString>::Node *)" (?node_copy@?$QList@VQString@@@@$$FAAEXPAUNode@1@00@Z)
            1>ClassProva.obj : error LNK2019: unresolved external symbol "public: struct QListData::Data * __thiscall QListData::detach(int)" (?detach@QListData@@$$FQAEPAUData@1@H@Z) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)
            1>ClassProva.obj : error LNK2019: unresolved external symbol "public: void * * __thiscall QListData::begin(void)const " (?begin@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)
            1>ClassProva.obj : error LNK2019: unresolved external symbol "public: void * * __thiscall QListData::end(void)const " (?end@QListData@@$$FQBEPAPAXXZ) referenced in function "public: __thiscall QList<class QString>::QList<class QString>(class QList<class QString> const &)" (??0?$QList@VQString@@@@$$FQAE@ABV0@@Z)
            1>C:\Users\Andrea.Laini\Desktop\Prova\ClassProva\Release\ClassProva.dll : fatal error LNK1120: 12 unresolved externals
            ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========
            
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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #6

              Hi,

              Can you show your class definition ?

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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