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

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incomplete typemainwindowqt5.5header cpp qtinclude
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  • mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by mrjj
    #2

    @Lorence said:

    grassyTile

    What type is that ?

    "use of incomplete type" often means a include file is missing
    or you forwarded a class
    like
    class SomeClass;

    And try to use it in a context where it needs to be fully defined.
    Like adding to some template lists.

    Not sure what you tried to define here ?

    std::array<Tile,1> tile_list <---- ; missing here?
    {
    ui->grassyTile // heres where error coming from
    };

    P 1 Reply Last reply
    2
    • L Offline
      L Offline
      Lorence
      wrote on last edited by
      #3

      grassyTile is of type Tile that is inheriting QLabel

      Not sure what you tried to define here ?
      i dont know how to list intialize an array on constructor so i decided to do it in side a class definition

      mrjjM 1 Reply Last reply
      0
      • L Lorence

        grassyTile is of type Tile that is inheriting QLabel

        Not sure what you tried to define here ?
        i dont know how to list intialize an array on constructor so i decided to do it in side a class definition

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by mrjj
        #4

        @mrjj said:

        and "tile.h" is included ?
        in mainwindow.h

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

        1 Reply Last reply
        0
        • 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
            0
            • 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
              0
              • 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
                      0
                      • 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
                          0
                          • 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
                              0
                              • 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
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