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  4. [SOLVED] Invalid use of incomplete type 'class UI::MainWindow'
Forum Update on Monday, May 27th 2025

[SOLVED] Invalid use of incomplete type 'class UI::MainWindow'

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incomplete typemainwindowqt5.5header cpp qtinclude
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  • L Offline
    L Offline
    Lorence
    wrote on last edited by
    #5

    and "tile.h" is included ?

    yes i got all i need included.

    do you mean like ?
    std::array<std::string, 2> strings = {{ "a", "b" }};

    yes, in the mainwindow.cpp i can freely use ui->grassyTile; without error.

    mrjjM 1 Reply Last reply
    0
    • L Lorence

      and "tile.h" is included ?

      yes i got all i need included.

      do you mean like ?
      std::array<std::string, 2> strings = {{ "a", "b" }};

      yes, in the mainwindow.cpp i can freely use ui->grassyTile; without error.

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #6

      @Lorence
      Ok so it must be the tile_list statement.

      Would it like
      std::array<Tile,1> tile_list {{ui->grassyTile }};

      1 Reply Last reply
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      • L Offline
        L Offline
        Lorence
        wrote on last edited by
        #7

        Would it like
        std::array<Tile,1> tile_list {{ui->grassyTile }};

        thanks for the help but i still get the same error

        mrjjM 1 Reply Last reply
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        • L Lorence

          Would it like
          std::array<Tile,1> tile_list {{ui->grassyTile }};

          thanks for the help but i still get the same error

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by mrjj
          #8

          @Lorence
          Ok, and you are 100% it knows the tile type here?
          you can declare one over the tile_list and it will like it ?
          Tile *Test;

          One thing I wonder, you say
          std::array<Tile> and not std::array<Tile *) or & so it must make a copy of
          it (the tile). Is that the effect you want?

          1 Reply Last reply
          0
          • L Offline
            L Offline
            Lorence
            wrote on last edited by
            #9

            http://i.imgur.com/3O9O6Vg.png
            this is the error im getting

            mrjjM 1 Reply Last reply
            0
            • L Lorence

              http://i.imgur.com/3O9O6Vg.png
              this is the error im getting

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #10

              @Lorence
              Hmm it seems its "ui" it do not like.
              Let me test.

              mrjjM 1 Reply Last reply
              0
              • mrjjM mrjj

                @Lorence
                Hmm it seems its "ui" it do not like.
                Let me test.

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by mrjj
                #11

                @mrjj
                ahh, Ui::MainWindow is defined in
                #include "ui_main_window.h"
                which is included in the CPP file so the type is not fully defined so you cannot say
                ui->Somename
                as Ui::MainWindow is not defined yet.

                moving
                #include "ui_main_window.h"
                to the minwin.h file allows it but not sure if it will confuse Qt Creator.

                Also it will complain about not being able to convert Tile to Tile * as list is not pointers and ui->grassyTile will be.

                1 Reply Last reply
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                • L Offline
                  L Offline
                  Lorence
                  wrote on last edited by
                  #12

                  ahh, Ui::MainWindow is defined in
                  #include "ui_main_window.h"

                  didnt think of that, thanks! but new error comes

                  http://i.imgur.com/unRPdII.png

                  mrjjM 1 Reply Last reply
                  0
                  • L Lorence

                    ahh, Ui::MainWindow is defined in
                    #include "ui_main_window.h"

                    didnt think of that, thanks! but new error comes

                    http://i.imgur.com/unRPdII.png

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #13

                    @Lorence

                    Yeah, it tries to construct a new Tile to go into the list.

                    Can I ask if you want a list of pointers to tiles you have on screen or
                    a list with new Tiles that has nothing to do with those on screen?

                    1 Reply Last reply
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                    • L Offline
                      L Offline
                      Lorence
                      wrote on last edited by Lorence
                      #14

                      sorry for the late reply.

                      i just want a list of tiles to choose from.

                      but QT disabled the copying of QLabel,
                      so i really need to have a pointer of tiles?

                      mrjjM 1 Reply Last reply
                      0
                      • L Lorence

                        sorry for the late reply.

                        i just want a list of tiles to choose from.

                        but QT disabled the copying of QLabel,
                        so i really need to have a pointer of tiles?

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by mrjj
                        #15

                        @Lorence
                        heh 9 mins is not considered late ;)

                        then the list must be pointer type or it will be new ones and not the ones on screen.

                        so
                        std::array<Tile> should be std::array<Tile *> or std::array<Tile &>
                        so its the ones on screen and not new ones
                        Yes you must at least use & as it must "point" to the real one.

                        1 Reply Last reply
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                        • L Offline
                          L Offline
                          Lorence
                          wrote on last edited by Lorence
                          #16

                          then the list must be pointer type
                          yea, i edited my last reply

                          it will be new ones and not the ones on screen.

                          it is the ones on the screen, there will be a list of tiles on the screen and the user will choose what tiles they want to render

                          *so
                          std::array<Tile> should be std::array<Tile > or std::array<Tile &>
                          so its the ones on screen and not new ones
                          Yes you must at least use & as it must "point" to the real one.

                          thanks!!!!!!!!

                          all my problem is fixed :) I have not coded for weeks and C++ is already kicking me damit

                          mrjjM 1 Reply Last reply
                          0
                          • L Lorence

                            then the list must be pointer type
                            yea, i edited my last reply

                            it will be new ones and not the ones on screen.

                            it is the ones on the screen, there will be a list of tiles on the screen and the user will choose what tiles they want to render

                            *so
                            std::array<Tile> should be std::array<Tile > or std::array<Tile &>
                            so its the ones on screen and not new ones
                            Yes you must at least use & as it must "point" to the real one.

                            thanks!!!!!!!!

                            all my problem is fixed :) I have not coded for weeks and C++ is already kicking me damit

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by mrjj
                            #17

                            @mrjj said:
                            ok. Super :)

                            and tile_list is the ones to choose from ?

                            Dont worry. I programmed c++ for 20 years and it still kicks me ;)

                            1 Reply Last reply
                            0
                            • L Offline
                              L Offline
                              Lorence
                              wrote on last edited by
                              #18

                              and tile_list is the ones to choose from ?

                              yes, it is a list of Tile which is inheriting QLabel

                              Dont worry. I programmed c++ for 20 years and it still kicks me ;)

                              woaaaaa, me is about a year, and started this QT last week, i choose this for my tile engine's interface from SFML, i still have more ways to go !^_^

                              mrjjM 1 Reply Last reply
                              0
                              • L Lorence

                                and tile_list is the ones to choose from ?

                                yes, it is a list of Tile which is inheriting QLabel

                                Dont worry. I programmed c++ for 20 years and it still kicks me ;)

                                woaaaaa, me is about a year, and started this QT last week, i choose this for my tile engine's interface from SFML, i still have more ways to go !^_^

                                mrjjM Offline
                                mrjjM Offline
                                mrjj
                                Lifetime Qt Champion
                                wrote on last edited by
                                #19

                                @Lorence said:
                                welcome on board to Qt. its a nice frame work.

                                Oh so its some sort of game editor your are making ?

                                1 Reply Last reply
                                0
                                • L Offline
                                  L Offline
                                  Lorence
                                  wrote on last edited by
                                  #20

                                  welcome on board to Qt. its a nice frame work.

                                  Yes my first choice is wxwidget and windows form application, but signals and slots mechanism of qt makes me decide to choose qt

                                  Oh so its some sort of game editor your are making ?
                                  yes exatcly, like the rpg maker vx ace of steam

                                  mrjjM 1 Reply Last reply
                                  0
                                  • L Lorence

                                    welcome on board to Qt. its a nice frame work.

                                    Yes my first choice is wxwidget and windows form application, but signals and slots mechanism of qt makes me decide to choose qt

                                    Oh so its some sort of game editor your are making ?
                                    yes exatcly, like the rpg maker vx ace of steam

                                    mrjjM Offline
                                    mrjjM Offline
                                    mrjj
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #21

                                    @Lorence
                                    Well IMHO Qt is more feature rich than wxwidget even I did like that also.

                                    Oh. Wow. thats a huge project. !
                                    So its an editor and and tile engine for making tile games. Pretty cool.

                                    1 Reply Last reply
                                    0
                                    • L Offline
                                      L Offline
                                      Lorence
                                      wrote on last edited by
                                      #22

                                      Well IMHO Qt is more feature rich than wxwidget even I did like that also.
                                      yea, in other forum's debation, QT always win, whats IMHO?

                                      Oh. Wow. thats a huge project. !
                                      yes this is a huge project for me XD,
                                      and i still got no idea about integrating script language into this project

                                      mrjjM 1 Reply Last reply
                                      0
                                      • L Lorence

                                        Well IMHO Qt is more feature rich than wxwidget even I did like that also.
                                        yea, in other forum's debation, QT always win, whats IMHO?

                                        Oh. Wow. thats a huge project. !
                                        yes this is a huge project for me XD,
                                        and i still got no idea about integrating script language into this project

                                        mrjjM Offline
                                        mrjjM Offline
                                        mrjj
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #23

                                        @Lorence
                                        IMHO = In my humble opinion
                                        Well I tested both and choose Qt.

                                        Would also be huge for me to make as single person if we are talking full
                                        game editor and engine :)

                                        I would have a good look at http://doc.qt.io/qt-5/qtscript-index.html
                                        Should be fast enough and quite easy to mix c++ and script.

                                        1 Reply Last reply
                                        0
                                        • L Offline
                                          L Offline
                                          Lorence
                                          wrote on last edited by
                                          #24

                                          I see

                                          Im planning to finish this as in 100%

                                          I would have a good look at http://doc.qt.io/qt-5/qtscript-index.html
                                          Should be fast enough and quite easy to mix c++ and script.

                                          thanks!

                                          We have group on skype do you want to join?

                                          mrjjM 1 Reply Last reply
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