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Basic question: Including headers with INCLUDEPATH doesn't work

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  • mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by mrjj
    #18

    when u add Q_OBJECT, please run qmake!

    1 Reply Last reply
    2
    • B Offline
      B Offline
      Binary91
      wrote on last edited by
      #19

      I already tried that.
      Building, running
      Building, qmake, running
      qmake, running
      qmake, building, running

      None of the above ways succeded

      mrjjM 1 Reply Last reply
      0
      • B Binary91

        I already tried that.
        Building, running
        Building, qmake, running
        qmake, running
        qmake, building, running

        None of the above ways succeded

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #20

        @Binary91
        then please as last test
        Complete delete the build folder.

        1 Reply Last reply
        0
        • B Offline
          B Offline
          Binary91
          wrote on last edited by
          #21

          tried that, two.

          Deleted everything but my project file and the sources/headers. Didn't work :-(

          Is it possible that qmake ignores INCLUDEPATH?

          mrjjM 1 Reply Last reply
          1
          • B Binary91

            tried that, two.

            Deleted everything but my project file and the sources/headers. Didn't work :-(

            Is it possible that qmake ignores INCLUDEPATH?

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #22

            @Binary91
            Well anything seems possible with your setup. :)
            Q_OBJECT should not bork anything.

            Im out of ideas :)

            1 Reply Last reply
            0
            • B Offline
              B Offline
              Binary91
              wrote on last edited by Binary91
              #23

              Well, I'll post the whole project file, its headers and sources and maybe you can copy/paste it and try to run it with?

              If it works, then it is a setting problem. If not, something with my include logic doesn't work.

              project file:

              #-------------------------------------------------
              #
              # Project created by QtCreator 2016-11-17T15:45:17
              #
              #-------------------------------------------------
              
              QT       += core gui
              
              greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
              
              TARGET = CourseCalculator
              TEMPLATE = app
              
              INCLUDEPATH += C:/Qt/lib/headers
              
              HEADERS  += main.h
              
              SOURCES += main.cpp
                         C:/Qt/lib/sources/myQString.cpp \
                         C:/Qt/lib/sources/myQLineEdit.cpp \
                         C:/Qt/lib/sources/myQPushButton.cpp
              
              

              main.cpp:

              // main.cpp
              
              #include "main.h"
              
              int main(int argc, char *argv[])
              {
                QApplication applicationApp(argc, argv);
                clsWindowMain windowMain;
              
                QTimer::singleShot(0, &windowMain, SLOT(slotStart()));
                int ret = applicationApp.exec();
                return ret;
              }
              
              main.h:
              

              // main.h

              #ifndef MAIN_H
              #define MAIN_H
              
              #include <QApplication>
              #include <QTimer>
              #include <QWidget>
              #include <QDialog>
              
              #endif // MAIN_H
              

              myQLineEdit.h:

              // myQLineEdit.h
              
              #ifndef MYQLINEEDIT_H
              #define MYQLINEEDIT_H
              
              #include <QDebug>
              #include <QLineEdit>
              #include <QMessageBox>
              #include <QDir>
              
              
              // forward declaration
              
              class myQLineEdit;
              
              
              // declaration
              
              class myQLineEdit : public QLineEdit
              {
                Q_OBJECT
              
                // .. properties
              
                public:
                  myQLineEdit(QWidget* widgetParent = 0);
                  ~myQLineEdit();
              
                  // .. more methods
              };
              
              #endif
              
              

              myQLineEdit.cpp:

              // myQLineEdit.cpp
              
              #include <myQLineEdit.h> // absolute path or absolute path with whitespaces also doesn't work
              
              
              // ----- constructors -----
              
              myQLineEdit::myQLineEdit(QWidget* widgetParent) : QLineEdit(widgetParent)
              {
                 // stuff
              }
              

              Is that compilable for you?

              mrjjM 1 Reply Last reply
              0
              • B Binary91

                Well, I'll post the whole project file, its headers and sources and maybe you can copy/paste it and try to run it with?

                If it works, then it is a setting problem. If not, something with my include logic doesn't work.

                project file:

                #-------------------------------------------------
                #
                # Project created by QtCreator 2016-11-17T15:45:17
                #
                #-------------------------------------------------
                
                QT       += core gui
                
                greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
                
                TARGET = CourseCalculator
                TEMPLATE = app
                
                INCLUDEPATH += C:/Qt/lib/headers
                
                HEADERS  += main.h
                
                SOURCES += main.cpp
                           C:/Qt/lib/sources/myQString.cpp \
                           C:/Qt/lib/sources/myQLineEdit.cpp \
                           C:/Qt/lib/sources/myQPushButton.cpp
                
                

                main.cpp:

                // main.cpp
                
                #include "main.h"
                
                int main(int argc, char *argv[])
                {
                  QApplication applicationApp(argc, argv);
                  clsWindowMain windowMain;
                
                  QTimer::singleShot(0, &windowMain, SLOT(slotStart()));
                  int ret = applicationApp.exec();
                  return ret;
                }
                
                main.h:
                

                // main.h

                #ifndef MAIN_H
                #define MAIN_H
                
                #include <QApplication>
                #include <QTimer>
                #include <QWidget>
                #include <QDialog>
                
                #endif // MAIN_H
                

                myQLineEdit.h:

                // myQLineEdit.h
                
                #ifndef MYQLINEEDIT_H
                #define MYQLINEEDIT_H
                
                #include <QDebug>
                #include <QLineEdit>
                #include <QMessageBox>
                #include <QDir>
                
                
                // forward declaration
                
                class myQLineEdit;
                
                
                // declaration
                
                class myQLineEdit : public QLineEdit
                {
                  Q_OBJECT
                
                  // .. properties
                
                  public:
                    myQLineEdit(QWidget* widgetParent = 0);
                    ~myQLineEdit();
                
                    // .. more methods
                };
                
                #endif
                
                

                myQLineEdit.cpp:

                // myQLineEdit.cpp
                
                #include <myQLineEdit.h> // absolute path or absolute path with whitespaces also doesn't work
                
                
                // ----- constructors -----
                
                myQLineEdit::myQLineEdit(QWidget* widgetParent) : QLineEdit(widgetParent)
                {
                   // stuff
                }
                

                Is that compilable for you?

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #24

                @Binary91
                would be very much easier if you zipped folder and shared via dropbox or g drive as
                copy paste to real files again is very error prone and time consuming :)

                1 Reply Last reply
                0
                • B Offline
                  B Offline
                  Binary91
                  wrote on last edited by
                  #25

                  Good idea. But my dropbox accout has no free memory left :-D

                  Have to create a new account first, maybe on g drive...

                  mrjjM jsulmJ 2 Replies Last reply
                  0
                  • B Binary91

                    Good idea. But my dropbox accout has no free memory left :-D

                    Have to create a new account first, maybe on g drive...

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by mrjj
                    #26

                    @Binary91
                    well a zipped project is ultra small. so delete/remove something for a moment and it should have space :)

                    btw: G Drive is 15 GB but the client is nowhere near as nice as dropbox.

                    1 Reply Last reply
                    1
                    • B Binary91

                      Good idea. But my dropbox accout has no free memory left :-D

                      Have to create a new account first, maybe on g drive...

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #27

                      @Binary91 If you derive from Qt classes which are derived from QObject then you need to include the generated moc_ files.
                      For example in myQLineEdit.cpp add

                      #include "moc_myQLineEdit.cpp"
                      

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

                      1 Reply Last reply
                      1
                      • B Offline
                        B Offline
                        Binary91
                        wrote on last edited by Binary91
                        #28

                        but from where do I get this moc file?
                        If I try to include, compiler gives me an error that it can not find such file or directory

                        btw:
                        https://www.dropbox.com/s/whqdkcat767224t/test.zip?dl=0

                        jsulmJ 4 Replies Last reply
                        0
                        • B Binary91

                          but from where do I get this moc file?
                          If I try to include, compiler gives me an error that it can not find such file or directory

                          btw:
                          https://www.dropbox.com/s/whqdkcat767224t/test.zip?dl=0

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #29

                          @Binary91 You should read the Qt documentation. The moc_ files are generated for you using moc tool. Take a look at the build directory.

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

                          1 Reply Last reply
                          0
                          • B Binary91

                            but from where do I get this moc file?
                            If I try to include, compiler gives me an error that it can not find such file or directory

                            btw:
                            https://www.dropbox.com/s/whqdkcat767224t/test.zip?dl=0

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #30

                            @Binary91 Why do you have a main.h? This is quite unusual.

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

                            1 Reply Last reply
                            0
                            • B Binary91

                              but from where do I get this moc file?
                              If I try to include, compiler gives me an error that it can not find such file or directory

                              btw:
                              https://www.dropbox.com/s/whqdkcat767224t/test.zip?dl=0

                              jsulmJ Offline
                              jsulmJ Offline
                              jsulm
                              Lifetime Qt Champion
                              wrote on last edited by
                              #31

                              @Binary91 For QApplication you need QT += gui, else you should use QCoreApplication.

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

                              1 Reply Last reply
                              0
                              • BuckwheatB Offline
                                BuckwheatB Offline
                                Buckwheat
                                wrote on last edited by
                                #32

                                @jsulm , why would you include the MOC files? I "never" include the MOC files in my source because they get generated, compiled, and linked after the normal build. The only generated file I would include is the ui_NameOfForm.h file created when using the form designer. And, only in the CPP for the UI class.

                                @Binary91 , I am sure it was explained that INCLUDEPATH tells qmake where to find common include files. I use it for 3rd party libraries or pre-built packages I developed for Qt (I treat them like 3rd party libraries). And, as I know you know... always run qmake after changing a PRO file.

                                There is one curious item I have found about QtCreator though... if you are using static libraries (even if your dependencies are setup) and make a change to a CPP file in the library... Press build-all and it will build the library and NOT re-link the application or shared library that depends on that static library. Kind of annoying but I just get around it!

                                Dave Fileccia

                                jsulmJ 1 Reply Last reply
                                1
                                • B Offline
                                  B Offline
                                  Binary91
                                  wrote on last edited by
                                  #33

                                  I know what moc files are, but they were not permanently created by QtCreator (not in my build folder).
                                  But can you tell me why I should have to generate them and manually include them when it works to simply add the headers to the project?
                                  I mean, I wanted to reduce work by using INCLUDEPATH and NOT adding all the included headers.
                                  Generating moc files and manually adding them is not reducing but increasing work.

                                  Also I do not understand why I should include them when I don't need it if I add the headers directly...

                                  jsulmJ 1 Reply Last reply
                                  0
                                  • B Binary91

                                    but from where do I get this moc file?
                                    If I try to include, compiler gives me an error that it can not find such file or directory

                                    btw:
                                    https://www.dropbox.com/s/whqdkcat767224t/test.zip?dl=0

                                    jsulmJ Offline
                                    jsulmJ Offline
                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #34

                                    @Binary91 Where is myudp.cpp ?

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

                                    jsulmJ 1 Reply Last reply
                                    0
                                    • jsulmJ jsulm

                                      @Binary91 Where is myudp.cpp ?

                                      jsulmJ Offline
                                      jsulmJ Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #35

                                      @jsulm With some fixes I can build your project.
                                      pro file:

                                      QT       += core network
                                      
                                      QT       -= gui
                                      
                                      TARGET = test
                                      CONFIG   += console
                                      CONFIG   -= app_bundle
                                      
                                      TEMPLATE = app
                                      
                                      INCLUDES += lib/headers/myQLineEdit.h
                                      
                                      SOURCES += main.cpp \
                                          #myudp.cpp
                                      
                                      #HEADERS += \
                                      #    myudp.h
                                      

                                      main.cpp

                                      #include <QCoreApplication>
                                      
                                      int main(int argc, char *argv[])
                                      {
                                        QCoreApplication applicationApp(argc, argv);
                                        //clsWindowMain windowMain;
                                      
                                        //QTimer::singleShot(0, &windowMain, SLOT(slotStart()));
                                        int ret = applicationApp.exec();
                                        return ret;
                                      }
                                      

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

                                      1 Reply Last reply
                                      1
                                      • B Binary91

                                        I know what moc files are, but they were not permanently created by QtCreator (not in my build folder).
                                        But can you tell me why I should have to generate them and manually include them when it works to simply add the headers to the project?
                                        I mean, I wanted to reduce work by using INCLUDEPATH and NOT adding all the included headers.
                                        Generating moc files and manually adding them is not reducing but increasing work.

                                        Also I do not understand why I should include them when I don't need it if I add the headers directly...

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #36

                                        @Binary91 Where I did say you have to create moc_ files manually?
                                        They are generated for you. And they are completely unrelated to your problem!

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

                                        1 Reply Last reply
                                        1
                                        • B Offline
                                          B Offline
                                          Binary91
                                          wrote on last edited by
                                          #37

                                          It's getting strange now :-D

                                          What is a myudp.cpp ?? I didn't ever used this...

                                          @jsulm
                                          But you are including the header directly now. That is exaclty what I tried to avoid...

                                          Why is main.h unusual? I think using headers as a bundle of #include directives for my purposes is the correct way, so in the source file, there only exists one #include directive to its corresponding header file. Not good?

                                          jsulmJ 2 Replies Last reply
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