QTProject Meta对象编译器会干扰

Question

我试图为我的地下城爬行者游戏添加图形UI进行大学作业。
这是我第一次使用QT（第一次在这里问一个问题，很抱歉，如果它不连贯，我会很乐意接受建议）
两天以来，我试图将STH与Qdialog，Qmainwindow和一个管理QOBject类一起放在一起。在我之间使用同学的代码，时间压力和从那里开始的启动器中的启动时间变成了一团糟。
我真的不知道如何解释错误消息。因此，我希望这里有人可以同时拥有这些错误消息指示以及如何摆脱这种情况。
我的代码没有错误消息。我怀疑我可能会破坏STH。通过鲁ck以同学的内容切换.UI文件的内容。
这个想法是，GraphicalUI（QOBject）类管理纹理并初始化不同的窗口，在这种情况下，第一个窗口启动屏幕屏幕（QDialog类）以及此之后的MainWindow。

错误消息：

错误消息

compile-error-messages：

debug\moc_graphicalui.cpp:65:46: error: 'staticMetaObject' is not a member of 'AbstractUI'
   65 |     QMetaObject::SuperData::link<AbstractUI::staticMetaObject>(),
      |                                              ^~~~~~~~~~~~~~~~
debug\moc_graphicalui.cpp:65:63: error: no matching function for call to 'QMetaObject::SuperData::link<<expression error> >()'
   65 |     QMetaObject::SuperData::link<AbstractUI::staticMetaObject>(),
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from C:/Qt/6.2.4/mingw_64/include/QtCore/qobject.h:46,
                 from C:/Qt/6.2.4/mingw_64/include/QtCore/QObject:1,
                 from debug\../../Prak3Versuch2/graphicalui.h:9,
                 from debug\moc_graphicalui.cpp:10:
C:/Qt/6.2.4/mingw_64/include/QtCore/qobjectdefs.h:417:69: note: candidate: 'template<const QMetaObject& MO> static constexpr QMetaObject::SuperData QMetaObject::SuperData::link()'
  417 |         template <const QMetaObject &MO> static constexpr SuperData link()
      |                                                                     ^~~~
C:/Qt/6.2.4/mingw_64/include/QtCore/qobjectdefs.h:417:69: note:   template argument deduction/substitution failed:
debug\moc_graphicalui.cpp:65:63: error: template argument 1 is invalid
   65 |     QMetaObject::SuperData::link<AbstractUI::staticMetaObject>(),
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
debug\moc_graphicalui.cpp: In member function 'virtual const QMetaObject* GraphicalUI::metaObject() const':
debug\moc_graphicalui.cpp:82:21: error: 'QScopedPointer<QObjectData> QObject::d_ptr' is protected within this context
   82 |     return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
      |                     ^~~~~
In file included from C:/Qt/6.2.4/mingw_64/include/QtCore/QObject:1,
                 from debug\../../Prak3Versuch2/graphicalui.h:9,
                 from debug\moc_graphicalui.cpp:10:
C:/Qt/6.2.4/mingw_64/include/QtCore/qobject.h:415:33: note: declared protected here
  415 |     QScopedPointer<QObjectData> d_ptr;
      |                                 ^~~~~
debug\moc_graphicalui.cpp:82:21: error: invalid use of non-static data member 'QObject::d_ptr'
   82 |     return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
      |                     ^~~~~
In file included from C:/Qt/6.2.4/mingw_64/include/QtCore/QObject:1,
                 from debug\../../Prak3Versuch2/graphicalui.h:9,
                 from debug\moc_graphicalui.cpp:10:
C:/Qt/6.2.4/mingw_64/include/QtCore/qobject.h:415:33: note: declared here
  415 |     QScopedPointer<QObjectData> d_ptr;
      |                                 ^~~~~
debug\moc_graphicalui.cpp:82:50: error: 'QScopedPointer<QObjectData> QObject::d_ptr' is protected within this context
   82 |     return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
      |                                                  ^~~~~
In file included from C:/Qt/6.2.4/mingw_64/include/QtCore/QObject:1,
                 from debug\../../Prak3Versuch2/graphicalui.h:9,
                 from debug\moc_graphicalui.cpp:10:
C:/Qt/6.2.4/mingw_64/include/QtCore/qobject.h:415:33: note: declared protected here
  415 |     QScopedPointer<QObjectData> d_ptr;
      |                                 ^~~~~
debug\moc_graphicalui.cpp:82:50: error: invalid use of non-static data member 'QObject::d_ptr'
   82 |     return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
      |                                                  ^~~~~
In file included from C:/Qt/6.2.4/mingw_64/include/QtCore/QObject:1,
                 from debug\../../Prak3Versuch2/graphicalui.h:9,
                 from debug\moc_graphicalui.cpp:10:
C:/Qt/6.2.4/mingw_64/include/QtCore/qobject.h:415:33: note: declared here
  415 |     QScopedPointer<QObjectData> d_ptr;
      |                                 ^~~~~
debug\moc_graphicalui.cpp: In member function 'virtual void* GraphicalUI::qt_metacast(const char*)':
debug\moc_graphicalui.cpp:92:24: error: 'qt_metacast' is not a member of 'AbstractUI'
   92 |     return AbstractUI::qt_metacast(_clname);
      |                        ^~~~~~~~~~~
debug\moc_graphicalui.cpp: In member function 'virtual int GraphicalUI::qt_metacall(QMetaObject::Call, int, void**)':
debug\moc_graphicalui.cpp:97:23: error: 'qt_metacall' is not a member of 'AbstractUI'
   97 |     _id = AbstractUI::qt_metacall(_c, _id, _a);
      |                       ^~~~~~~~~~~
mingw32-make[1]: *** [Makefile.Debug:2369: debug/moc_graphicalui.o] Error 1
mingw32-make[1]: Leaving directory 'C:/Users/Surface/OneDrive/Old Stuff/Programmieren/build-Prak3Versuch2-Desktop_Qt_6_2_4_MinGW_64_bit-Debug'
mingw32-make: *** [Makefile:45: debug] Error 2
14:21:56: Der Prozess "C:\Qt\Tools\mingw1120_64\bin\mingw32-make.exe" wurde mit dem Rückgabewert 2 beendet.
Fehler beim Erstellen/Deployment des Projekts Prak3Versuch2 (Kit: Desktop Qt 6.2.4 MinGW 64-bit)
Bei der Ausführung von Schritt "Make"

startscreen class class header（qdialog）

#ifndef STARTSCREEN_H
#define STARTSCREEN_H

#include "Header.h"

#include <QLabel>
#include <QDialog>
#include <QPushButton>
#include <QGridLayout>

class GraphicalUI;


namespace Ui { class StartScreen; }

class StartScreen : public QDialog
{
    Q_OBJECT

public:
    explicit StartScreen(GraphicalUI* gUI, QWidget *parent = nullptr);
    ~StartScreen();

    int getBackgroundHeight() const;
    int getBackgroundWidth() const;

private:
    Ui::StartScreen *ui;

    QPushButton *startButton;
    QLabel* backgroundLabel; //label for QPixmap Background
    QPixmap* backgroundPixmap; //Pixmap for Background Texture

    GraphicalUI* graphicalUi;

    void setupDialog();
    void setupStartButton();

private slots:
    void slotSwitchWindow() const;
};

#endif // STARTSCREEN_H

startspreenspreenspreen class。 CPP

#include "startscreen.h"
#include "ui_startscreen.h"
#include "graphicalui.h"

StartScreen::StartScreen(GraphicalUI* gUI, QWidget *parent) :
    QDialog(parent),
    ui(new Ui::StartScreen)
{
    ui->setupUi(this);

    setupDialog();
    setupStartButton();

}

StartScreen::~StartScreen()
{
    delete ui;
}

void StartScreen::setupDialog() {
    backgroundPixmap = graphicalUi->startScreenTextures.at(StartScreenTexturesIndex::BACKGROUND_TEXTURE);
    setWindowTitle(TitleBarLabels::STARTSCREEN_LABEL);

    setFixedSize(QSize(backgroundPixmap->width(), backgroundPixmap->height()));

    backgroundLabel = new QLabel(this);

    ui->dialogGridLayout->addWidget(backgroundLabel, 0 , 0, 5, 3);

    backgroundLabel->setStyleSheet("background-color: rgba(0,0,0,100%)");
    backgroundLabel->setPixmap(*(backgroundPixmap));

}
void StartScreen::setupStartButton() {
    auto buttonPixmap = graphicalUi->startScreenTextures.at(StartScreenTexturesIndex::STARTBUTTON_DEFAULT_TEXTURE);

    startButton = new QPushButton(this);
    startButton->setIcon(*buttonPixmap);

    ui->dialogGridLayout->addWidget(startButton, 3, 1);
}

void StartScreen::slotSwitchWindow() const{
    graphicalUi->switchWindow();
}

int StartScreen::getBackgroundHeight() const {
    return backgroundPixmap->height();
}

int StartScreen::getBackgroundWidth() const {
    return backgroundPixmap->width();
}

启动屏幕类.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>StartScreen</class>
 <widget class="QDialog" name="StartScreen">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>400</width>
    <height>300</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Dialog</string>
  </property>
  <layout class="QGridLayout" name="dialogGridLayout">
   <property name="leftMargin">
    <number>0</number>
   </property>
   <property name="topMargin">
    <number>0</number>
   </property>
   <property name="rightMargin">
    <number>0</number>
   </property>
   <property name="bottomMargin">
    <number>0</number>
   </property>
  </layout>
 </widget>
 <resources/>
 <connections/>
</ui>

MainWindow类截头

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QPixmap>
#include <QLabel>
#include <QGridLayout>
#include <memory>
#include <array>
#include <vector>

#include <iostream>

class GraphicalUI;

namespace Ui { class MainWindow; }

class MainWindow : public QMainWindow {
    Q_OBJECT
public:
    explicit MainWindow(GraphicalUI* graphicalUi, QWidget* parent = nullptr);
    ~MainWindow();

private:
    QGridLayout *centralGridLayout;
    Ui::MainWindow* ui;
    GraphicalUI* graphicalUi;
    QLabel* backgroundLabel;

    std::vector<std::vector<QLabel*>> tileLabelsVector;

    QLabel* overlayLabel;

    QGridLayout* buttonGridLayout;
    QGridLayout* levelGridLayout;

    QPixmap* mainWindowOverlay;

    void setupMainWindow();

    void setupOverlay();
};

MainWindow类.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "graphicalui.h"

MainWindow::MainWindow(GraphicalUI* graphicalUi, QWidget* parent) :
    QMainWindow(parent), ui(new Ui::MainWindow), graphicalUi(graphicalUi) {
    ui->setupUi(this);
    centralGridLayout = new QGridLayout(this);
    setupMainWindow();
}

MainWindow::~MainWindow() {
    delete ui;
}

void MainWindow::setupMainWindow() {

    setFixedSize(QSize(mainWindowOverlay->width(), mainWindowOverlay->height()));

    backgroundLabel = new QLabel(this);
    backgroundLabel->setStyleSheet("background-color: rgba(0,0,0,100%)");

    ui->centralGridLayout->addWidget(backgroundLabel,0,0,3,12);

    overlayLabel = new QLabel(this);

    overlayLabel->setStyleSheet("background-color: rgba(0,0,0,0%)");
    overlayLabel->setPixmap(*(mainWindowOverlay));

    ui->centralGridLayout->addWidget(overlayLabel,0,0, 3,12);
}

MainWindow类.UI

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>821</width>
    <height>590</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QGridLayout" name="centralGridLayout">
    <property name="leftMargin">
     <number>0</number>
    </property>
    <property name="topMargin">
     <number>0</number>
    </property>
    <property name="rightMargin">
     <number>0</number>
    </property>
    <property name="bottomMargin">
     <number>0</number>
    </property>
   </layout>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>821</width>
     <height>20</height>
    </rect>
   </property>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

Graphicalui类标头（qObject）

#ifndef GRAPHICALUI_H
#define GRAPHICALUI_H

class Level;

#include <Header.h>
#include <AbstractUI.h>
#include <Controller.h>
#include <QObject>
#include <QWidget>
#include <QVBoxLayout>
#include <QPushButton>
#include <QLabel>
#include <QLineEdit>
#include <QGroupBox>
#include <QTextEdit>

#include <startscreen.h>
#include <mainwindow.h>

class GraphicalUI : public AbstractUI, public Controller
{
    Q_OBJECT
public:
    GraphicalUI();
    ~GraphicalUI();

    void move() override;
    char move(Character* who, Level* currentLevel);

    void switchWindow();

    std::vector<QPixmap*> startScreenTextures;
    std::vector<QPixmap*> mainWindowTextures;
    std::vector<QPixmap*> controlButtonTextures;

private:
    StartScreen* startScreen;
    MainWindow* mainWindow;

    void setStartScreenTextures();
    void setTitleBarTextures();
    void setMainWindowTextures();
    void setControlButtonTextures();
};

#endif // GRAPHICALUI_H

Graphicalui类.cpp

#include "graphicalui.h"

GraphicalUI::GraphicalUI()
{
    setStartScreenTextures();
    setMainWindowTextures();
    setControlButtonTextures();

    startScreen = new StartScreen(this);
    mainWindow = new MainWindow(this);
    startScreen->show();
    mainWindow->show();
}


void GraphicalUI::switchWindow(){
    startScreen->hide();
    mainWindow->show();
}


void GraphicalUI::setStartScreenTextures() {
    startScreenTextures.resize(2);

    startScreenTextures.at(StartScreenTexturesIndex::BACKGROUND_TEXTURE) = new QPixmap(StartScreenTextures::BACKGROUND_TEXTURE);
    startScreenTextures.at(StartScreenTexturesIndex::STARTBUTTON_DEFAULT_TEXTURE) = new QPixmap(StartScreenTextures::STARTBUTTON_DEFAULT_TEXTURE);
}

void GraphicalUI::setMainWindowTextures() {
    mainWindowTextures.resize(1);

    mainWindowTextures.at(MainWindowTexturesIndex::MAINWINDOW_OVERLAY_TEXTURE) = new QPixmap(MainWindowTextures::MAINWINDOW_OVERLAY_TEXTURE);
}

void GraphicalUI::setControlButtonTextures() {
    controlButtonTextures.resize(9);

    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_UPLEFT_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_UPLEFT_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_UP_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_UP_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_UPRIGHT_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_UPRIGHT_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_LEFT_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_LEFT_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_SKIP_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_SKIP_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_RIGHT_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_RIGHT_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_DOWNLEFT_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_DOWNLEFT_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_DOWN_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_DOWN_DEFAULT_TEXTURE);
    controlButtonTextures.at(ControlButtonTexturesIndex::CONTROLBUTTON_DOWNRIGHT_DEFAULT_TEXTURE) = new QPixmap(ControlButtonTextures::CONTROLBUTTON_DOWNRIGHT_DEFAULT_TEXTURE);
}

Answer 1

希望清除任何混乱，QT的基本知识就是这样：

• 所有QOBject类都必须从QOBject（或派生的类）和公开继承，并在其私有部分中具有q_object宏；
• 使用Qmake，必须在项目文件中的标题下列出标题。 CMAKE可以直接在目标源列表中列出的汽车标头文件，以及与源（.cpp）文件相对应的列表；
• 当一类具有此宏，但不是qobject时，汇编将失败。