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  4. [solved] QHash's insert() wrong use? --> VS-Debugger showed botch data due to missing Qt-Addon for VS
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[solved] QHash's insert() wrong use? --> VS-Debugger showed botch data due to missing Qt-Addon for VS

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  • Z Offline
    Z Offline
    ZapB
    wrote on last edited by
    #14

    Yes you are. You are using the QtCore dll. Also where is your main() function?

    Nokia Certified Qt Specialist
    Interested in hearing about Qt related work

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    • G Offline
      G Offline
      giesbert
      wrote on last edited by
      #15

      You are missing the linker options in your pro file.
      can you show it to us?
      or what do you use for compiling?

      For me, your code compiles fine.

      Nokia Certified Qt Specialist.
      Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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      • L Offline
        L Offline
        ludde
        wrote on last edited by
        #16

        Code looks OK to me. Except your DataController destructor should probably destroy the DataItems. But the way your DataItems are now, you should be able to pass them around by value, i.e. not bother with new/delete and the use of pointers.

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        • H Offline
          H Offline
          huckfinn
          wrote on last edited by
          #17

          @Gerolf: Yes the compilation is not my problem ;) My linker will not link my stuff ;)

          @ZapB: Ok, I included the %QTDIR%qt4.5.0libQtCore4.lib to
          Project --> Properties --> Linker --> General --> Add additional Libraries. But same linker error as above.

          bq. 1>Linking...
          1>DataItem.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall QString::~QString(void)" (_imp??1QString@@QAE@XZ) referenced in function __unwindfunclet$??0DataItem@@QAE@XZ$0
          1>DataController.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall QString::~QString(void)" (_imp??1QString@@QAE@XZ)
          ////etc....
          1>deldel3 - 19 error(s), 0 warning(s)
          ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

          Qstring is in QtCore as well as far as I know?

          The main? Is that wrong?

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          • H Offline
            H Offline
            huckfinn
            wrote on last edited by
            #18

            @ludde: Yes of course. I will destroy all DataItems pointers objects which are stored in my heap after all.
            But therefore I have to store them first, which was my initial problem. Now, my smaller problem is to make that app run ;)

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            • Z Offline
              Z Offline
              ZapB
              wrote on last edited by
              #19

              I could not see a main() function in what you posted.

              Nokia Certified Qt Specialist
              Interested in hearing about Qt related work

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              • L Offline
                L Offline
                ludde
                wrote on last edited by
                #20

                The main function is inside the MyDockWidget class - looks really weird to me... Does the main function not have to be global?

                Regarding the link errors, which IDE are you using to build your project?

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                • H Offline
                  H Offline
                  huckfinn
                  wrote on last edited by
                  #21

                  ah ok. without MyDockWidget:: in front?

                  just:
                  @int main(int p_argsc, char *p_argsv[] ) {
                  myDataController.addNew(2511, "Heim", 20481, 1272923);
                  myDataController.addNew(2512, "Work", 20482, 1272963);
                  // Breakpoint here
                  return 1;
                  }
                  @

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                  • L Offline
                    L Offline
                    ludde
                    wrote on last edited by
                    #22

                    Yeah, but then you cannot use myDataController, you have to create it first.
                    And remove the declaration of main() in the .h file.

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                    • H Offline
                      H Offline
                      huckfinn
                      wrote on last edited by
                      #23

                      [quote author="ludde" date="1309856111"]Regarding the link errors, which IDE are you using to build your project?[/quote]
                      Visual Studio 2008 Version 9

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                      • H Offline
                        H Offline
                        huckfinn
                        wrote on last edited by
                        #24

                        [quote author="ludde" date="1309856111"]The main function is inside the MyDockWidget class - looks really weird to me... Does the main function not have to be global?[/quote]

                        This project is in real a *.dll. I just extracted the required methods and classes to reproduce my QHash problem.

                        Hint: The original projects were generated by cmake, which should add corresponding libs correctly.

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                        • G Offline
                          G Offline
                          giesbert
                          wrote on last edited by
                          #25

                          huckfinn,

                          are you using MSDEV for building?
                          If yes, please post your vcproj file via pastebin ort similar shares. I'm sure, the problem is located there.

                          Nokia Certified Qt Specialist.
                          Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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                          • H Offline
                            H Offline
                            huckfinn
                            wrote on last edited by
                            #26

                            Here is my vproj file:

                            @
                            <?xml version="1.0" encoding="Windows-1252"?>
                            <VisualStudioProject
                            ProjectType="Visual C++"
                            Version="9,00"
                            Name="deldel3"
                            ProjectGUID="{19DD986F-AEBE-4C05-8309-B174DE1C1C3F}"
                            RootNamespace="deldel3"
                            TargetFrameworkVersion="196613"

                            <Platforms>
                            <Platform
                            Name="Win32"
                            />
                            </Platforms>
                            <ToolFiles>
                            </ToolFiles>
                            <Configurations>
                            <Configuration
                            Name="Debug|Win32"
                            OutputDirectory="$(SolutionDir)$(ConfigurationName)"
                            IntermediateDirectory="$(ConfigurationName)"
                            ConfigurationType="1"
                            UseOfMFC="0"
                            CharacterSet="2"

                            <Tool
                            Name="VCPreBuildEventTool"
                            />
                            <Tool
                            Name="VCCustomBuildTool"
                            />
                            <Tool
                            Name="VCXMLDataGeneratorTool"
                            />
                            <Tool
                            Name="VCWebServiceProxyGeneratorTool"
                            />
                            <Tool
                            Name="VCMIDLTool"
                            />
                            <Tool
                            Name="VCCLCompilerTool"
                            Optimization="0"
                            AdditionalIncludeDirectories=""C:\\Qt\\qt-win-opensource-src-4.5.0\\include\\QtGui";"C:\\Qt\\qt-win-opensource-src-4.5.0\\include\\QtCore";"C:\\Qt\\qt-win-opensource-src-4.5.0\\include""
                            MinimalRebuild="true"
                            BasicRuntimeChecks="3"
                            RuntimeLibrary="2"
                            WarningLevel="3"
                            DebugInformationFormat="4"
                            />
                            <Tool
                            Name="VCManagedResourceCompilerTool"
                            />
                            <Tool
                            Name="VCResourceCompilerTool"
                            />
                            <Tool
                            Name="VCPreLinkEventTool"
                            />
                            <Tool
                            Name="VCLinkerTool"
                            LinkLibraryDependencies="false"
                            UseUnicodeResponseFiles="false"
                            AdditionalLibraryDirectories=""C:\\Qt\\qt-win-opensource-src-4.5.0\\lib\\QtCored4.lib";"C:\\Qt\\qt-win-opensource-src-4.5.0\\lib\\QtCore4.lib""
                            GenerateDebugInformation="true"
                            EntryPointSymbol="main"
                            TargetMachine="1"
                            />
                            <Tool
                            Name="VCALinkTool"
                            />
                            <Tool
                            Name="VCManifestTool"
                            />
                            <Tool
                            Name="VCXDCMakeTool"
                            />
                            <Tool
                            Name="VCBscMakeTool"
                            />
                            <Tool
                            Name="VCFxCopTool"
                            />
                            <Tool
                            Name="VCAppVerifierTool"
                            />
                            <Tool
                            Name="VCPostBuildEventTool"
                            />
                            </Configuration>
                            <Configuration
                            Name="Release|Win32"
                            OutputDirectory="$(SolutionDir)$(ConfigurationName)"
                            IntermediateDirectory="$(ConfigurationName)"
                            ConfigurationType="1"
                            CharacterSet="2"
                            WholeProgramOptimization="1"

                            <Tool
                            Name="VCPreBuildEventTool"
                            />
                            <Tool
                            Name="VCCustomBuildTool"
                            />
                            <Tool
                            Name="VCXMLDataGeneratorTool"
                            />
                            <Tool
                            Name="VCWebServiceProxyGeneratorTool"
                            />
                            <Tool
                            Name="VCMIDLTool"
                            />
                            <Tool
                            Name="VCCLCompilerTool"
                            Optimization="2"
                            EnableIntrinsicFunctions="true"
                            RuntimeLibrary="2"
                            EnableFunctionLevelLinking="true"
                            WarningLevel="3"
                            DebugInformationFormat="3"
                            />
                            <Tool
                            Name="VCManagedResourceCompilerTool"
                            />
                            <Tool
                            Name="VCResourceCompilerTool"
                            />
                            <Tool
                            Name="VCPreLinkEventTool"
                            />
                            <Tool
                            Name="VCLinkerTool"
                            GenerateDebugInformation="true"
                            OptimizeReferences="2"
                            EnableCOMDATFolding="2"
                            TargetMachine="1"
                            />
                            <Tool
                            Name="VCALinkTool"
                            />
                            <Tool
                            Name="VCManifestTool"
                            />
                            <Tool
                            Name="VCXDCMakeTool"
                            />
                            <Tool
                            Name="VCBscMakeTool"
                            />
                            <Tool
                            Name="VCFxCopTool"
                            />
                            <Tool
                            Name="VCAppVerifierTool"
                            />
                            <Tool
                            Name="VCPostBuildEventTool"
                            />
                            </Configuration>
                            </Configurations>
                            <References>
                            </References>
                            <Files>
                            <Filter
                            Name="Source Files"
                            Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
                            UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"

                            <File
                            RelativePath=".\\DataController.cpp"
                            >
                            </File>
                            <File
                            RelativePath=".\\DataItem.cpp"
                            >
                            </File>
                            <File
                            RelativePath=".\\MyDockWidget.cpp"
                            >
                            </File>
                            </Filter>
                            <Filter
                            Name="Header Files"
                            Filter="h;hpp;hxx;hm;inl;inc;xsd"
                            UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"

                            <File
                            RelativePath=".\\DataController.h"
                            >
                            </File>
                            <File
                            RelativePath=".\\DataItem.h"
                            >
                            </File>
                            <File
                            RelativePath=".\\MyDockWidget.h"
                            >
                            </File>
                            </Filter>
                            <Filter
                            Name="Resource Files"
                            Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
                            UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"

                            </Filter>
                            </Files>
                            <Globals>
                            </Globals>
                            </VisualStudioProject>
                            @

                            Thank you for your patience. Cheers Huck

                            [EDIT: code formatting, use @-tags, not 'quote', Volker]

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                            • G Offline
                              G Offline
                              giesbert
                              wrote on last edited by
                              #27

                              Hi,

                              I see two bugs in there:

                              you do not link the QtCore.lib in release mode

                              You link debug and release lib in debug mode.

                              Correct this and try again please.

                              Nokia Certified Qt Specialist.
                              Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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                              • G Offline
                                G Offline
                                giesbert
                                wrote on last edited by
                                #28

                                additionally, you would typically have some stuff in the Globals section:

                                @
                                <Globals>
                                <Global
                                Name="MocDir"
                                Value=".\\GeneratedFiles\\$(ConfigurationName)"
                                />
                                <Global
                                Name="QtVersion"
                                Value="MSVS2008SP1"
                                />
                                <Global
                                Name="RccDir"
                                Value=".\\GeneratedFiles"
                                />
                                <Global
                                Name="UicDir"
                                Value=".\\GeneratedFiles"
                                />
                                </Globals>
                                </VisualStudioProject>
                                @

                                EDIT: this is used by the Qt plugin for MSVS

                                Nokia Certified Qt Specialist.
                                Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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                                • H Offline
                                  H Offline
                                  huckfinn
                                  wrote on last edited by
                                  #29

                                  They're empty..
                                  @ <Globals>
                                  </Globals>@

                                  What was MSDEV? (previous post)

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                                  • H Offline
                                    H Offline
                                    huckfinn
                                    wrote on last edited by
                                    #30

                                    [quote author="Gerolf" date="1309865412"]Hi, I see two bugs in there: # you do not link the QtCore.lib in release mode # You link debug and release lib in debug mode. Correct this and try again please.[/quote]

                                    Thank you Gerolf. Now, I can compile link and run my program.
                                    Project --> Properties --> Linker --> Input --> Additional dependecies --> PathToCore4Lib\QtCore4.lib

                                    And I have same error with my QHash. It was reproducable.

                                    Here is my sourcecode again:
                                    MyDockWidget cpp and h
                                    @
                                    #include "MyDockWidget.h"
                                    #include "DataController.h"

                                    MyDockWidget::MyDockWidget( )
                                    {
                                    }

                                    int main(int p_argsc, char *p_argsv[] )
                                    {
                                    DataController myDataController;
                                    myDataController.addNew(2511, "Heim", 20481, 1272923);
                                    myDataController.addNew(2512, "Work", 20482, 1272963);
                                    // Breakpoint here
                                    return 1;
                                    }

                                    // here header
                                    #ifndef MY_DOCK_WIDGET_H
                                    #define My_DOCK_WIDGET_H
                                    #include <QString>
                                    #include "DataController.h"

                                    class MyDockWidget
                                    {
                                    public:
                                    MyDockWidget();
                                    DataController myDataController;
                                    };
                                    #endif // MY_DOCK_WIDGET_H
                                    @

                                    DataController cpp and h
                                    @
                                    #include <QHash>
                                    #include "DataController.h"
                                    #include "DataItem.h"

                                    void DataController::addNew(qint32 tID, QString tName, qint32 tCat, qint32 tCon)
                                    {
                                    DataItem * tPI = new DataItem(tID, tName, tCat, tCon);
                                    this->myQHash.insert(tID, tPI);
                                    }

                                    DataController::~DataController(void) {}

                                    // here header
                                    #pragma once

                                    #include <QString>
                                    #include <QHash>
                                    #include "DataItem.h"

                                    class DataController
                                    {
                                    public:
                                    ~DataController(void);
                                    void addNew(qint32, QString, qint32, qint32);
                                    private:
                                    QHash<qint32, DataItem*> myQHash;
                                    };
                                    @

                                    DataItem cpp and h
                                    @
                                    #include "DataItem.h"
                                    #include <QString>
                                    DataItem::DataItem()
                                    {
                                    this->dataID = 0;
                                    this->dataCon = 0;
                                    this->dataCat = 0;
                                    this->dataName = "defName";
                                    }

                                    DataItem::DataItem(qint32 tId, QString tName, qint32 tCat, qint32 tCon)
                                    {
                                    this->dataID = tId;
                                    this->dataCon = tCon;
                                    this->dataCat = tCat;
                                    this->dataName = tName;
                                    }

                                    qint32 DataItem::getID() const { return this->dataID; }

                                    QString DataItem::getName() const { return this->dataName; }

                                    qint32 DataItem::getCat() const { return this->dataCat; }

                                    qint32 DataItem::getCon() const { return this->dataCon; }

                                    DataItem::~DataItem(void) {}

                                    // here header
                                    #pragma once

                                    #include <QString>

                                    class DataItem
                                    {
                                    public:
                                    DataItem();
                                    DataItem(qint32 tId, QString tName, qint32 tCat, qint32 tCon);
                                    ~DataItem(void);

                                    qint32 getID() const;
                                    QString getName() const;
                                    qint32 getCat() const;
                                    qint32 getCon() const;

                                    private:
                                    qint32 dataID;
                                    QString dataName;
                                    qint32 dataCat;
                                    qint32 dataCon;
                                    };
                                    @

                                    Cheers Huck

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                                    • H Offline
                                      H Offline
                                      huckfinn
                                      wrote on last edited by
                                      #31

                                      and here you have the log of my myDataController from the Watch window:

                                      @- myDataController {myQHash={...} } DataController

                                      • myQHash {d=0x003d35a0 e=0x003d35a0 } QHash<int,DataItem *>
                                      • d 0x003d35a0 {fakeNext=0x00000000 buckets=0x003d35d8 ref={...} ...} QHashData *
                                      • fakeNext 0x00000000 {next=??? h=??? } QHashData::Node *
                                      • buckets 0x003d35d8 QHashData::Node * *
                                      • ref {_q_value=1 } QBasicAtomicInt
                                        size 2 int
                                        nodeSize 12 int
                                        userNumBits 4 short
                                        numBits 4 short
                                        numBuckets 17 int
                                        sharable 1 unsigned int
                                      • e 0x003d35a0 {next=0x00000000 h=4011480 key=4011480 ...} QHashNode<int,DataItem *> *
                                      • next 0x00000000 {next=??? h=??? key=??? ...} QHashNode<int,DataItem *> *
                                        next CXX0030: Error: expression cannot be evaluated
                                        h CXX0030: Error: expression cannot be evaluated
                                        key CXX0030: Error: expression cannot be evaluated
                                        value CXX0030: Error: expression cannot be evaluated
                                        h 4011480 unsigned int
                                        key 4011480 int
                                      • value 0x00000001 {dataID=??? dataName={...} dataCat=??? ...} DataItem *
                                        dataID CXX0030: Error: expression cannot be evaluated
                                      • dataName {d=??? } QString
                                        d CXX0017: Error: symbol "" not found
                                        dataCat CXX0030: Error: expression cannot be evaluated
                                        dataCon CXX0030: Error: expression cannot be evaluated
                                        @
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                                      • L Offline
                                        L Offline
                                        ludde
                                        wrote on last edited by
                                        #32

                                        That log does not say much, at least not to me.
                                        What is the problem now? I.e. what does the program do, and what did you expect it do?

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                                        • Z Offline
                                          Z Offline
                                          ZapB
                                          wrote on last edited by
                                          #33

                                          Indeed. I suggest writing unit tests for your classes.

                                          Nokia Certified Qt Specialist
                                          Interested in hearing about Qt related work

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