#include <QApplication>
#include <QMainWindow>
#include <QMenuBar>
#include <QMenu>
#include <QAction>
#include <QTextEdit>
#include <QKeySequence>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
    {
        // 創(chuàng)建文本編輯區(qū)域
        QTextEdit *textEdit = new QTextEdit(this);
        setCentralWidget(textEdit);

        // 創(chuàng)建菜單欄
        QMenuBar *menuBar = menuBar();

        // 創(chuàng)建文件菜單
        QMenu *fileMenu = menuBar->addMenu("&File");

        // 創(chuàng)建新建文件動作，并設置快捷鍵Ctrl+N
        QAction *newAction = new QAction("&New", this);
        newAction->setShortcut(QKeySequence("Ctrl+N"));
        connect(newAction, &QAction::triggered, [textEdit]() {
            textEdit->clear();
        });
        fileMenu->addAction(newAction);

        // 創(chuàng)建打開文件動作，并設置快捷鍵Ctrl+O
        QAction *openAction = new QAction("&Open", this);
        openAction->setShortcut(QKeySequence("Ctrl+O"));
        connect(openAction, &QAction::triggered, []() {
            // 這里添加打開文件的實際邏輯
        });
        fileMenu->addAction(openAction);

        // 創(chuàng)建保存文件動作，并設置快捷鍵Ctrl+S
        QAction *saveAction = new QAction("&Save", this);
        saveAction->setShortcut(QKeySequence("Ctrl+S"));
        connect(saveAction, &QAction::triggered, [textEdit]() {
            // 這里添加保存文件的實際邏輯，例如將textEdit的內容保存到文件
        });
        fileMenu->addAction(saveAction);

        // 創(chuàng)建編輯菜單
        QMenu *editMenu = menuBar->addMenu("&Edit");

        // 創(chuàng)建復制動作，并設置快捷鍵Ctrl+C
        QAction *copyAction = new QAction("&Copy", this);
        copyAction->setShortcut(QKeySequence::Copy);
        connect(copyAction, &QAction::triggered, textEdit, &QTextEdit::copy);
        editMenu->addAction(copyAction);

        // 創(chuàng)建粘貼動作，并設置快捷鍵Ctrl+V
        QAction *pasteAction = new QAction("&Paste", this);
        pasteAction->setShortcut(QKeySequence::Paste);
        connect(pasteAction, &QAction::triggered, textEdit, &QTextEdit::paste);
        editMenu->addAction(pasteAction);

        // 創(chuàng)建工具欄
        QToolBar *toolBar = addToolBar("Main Toolbar");

        // 將新建、打開、保存動作添加到工具欄
        toolBar->addAction(newAction);
        toolBar->addAction(openAction);
        toolBar->addAction(saveAction);

        // 將復制、粘貼動作添加到工具欄
        toolBar->addAction(copyAction);
        toolBar->addAction(pasteAction);
    }
};

#include <QApplication>
#include <QMainWindow>
#include <QShortcut>
#include <QKeySequence>
#include <QMessageBox>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
    {
        // 創(chuàng)建全局查找快捷鍵Ctrl+F
        QShortcut *findShortcut = new QShortcut(QKeySequence("Ctrl+F"), this);
        findShortcut->setContext(Qt::ApplicationShortcut);
        connect(findShortcut, &QShortcut::activated, this, &MainWindow::showFindDialog);
    }

private slots:
    void showFindDialog()
    {
        QMessageBox::information(this, "Find", "Show the find dialog here.");
        // 這里添加實際的查找對話框顯示邏輯
    }
};

#include <QApplication>
#include <QMainWindow>
#include <QMenuBar>
#include <QMenu>
#include <QAction>
#include <QKeySequence>
#include <QInputDialog>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
    {
        // 創(chuàng)建菜單欄
        QMenuBar *menuBar = menuBar();

        // 創(chuàng)建繪圖菜單
        QMenu *drawingMenu = menuBar->addMenu("&Drawing");

        // 創(chuàng)建畫直線動作
        lineAction = new QAction("&Draw Line", this);
        lineAction->setShortcut(QKeySequence("Ctrl+L"));
        connect(lineAction, &QAction::triggered, this, &MainWindow::drawLine);
        drawingMenu->addAction(lineAction);

        // 創(chuàng)建更改快捷鍵動作
        changeShortcutAction = new QAction("&Change Line Shortcut", this);
        connect(changeShortcutAction, &QAction::triggered, this, &MainWindow::changeLineShortcut);
        drawingMenu->addAction(changeShortcutAction);
    }

private slots:
    void drawLine()
    {
        // 實際的畫直線邏輯
    }

    void changeLineShortcut()
    {
        bool ok;
        // 使用QInputDialog獲取用戶輸入的新快捷鍵
        QString newShortcutStr = QInputDialog::getText(this, "Change Shortcut", "Enter new shortcut:", QLineEdit::Normal, "", &ok);
        if (ok &&!newShortcutStr.isEmpty())
        {
            QKeySequence newShortcut(newShortcutStr);
            lineAction->setShortcut(newShortcut);
        }
    }

private:
    QAction *lineAction;
    QAction *changeShortcutAction;
};

#include <QApplication>
#include <QMainWindow>
#include <QMenuBar>
#include <QMenu>
#include <QAction>
#include <QKeySequence>
#include <QSettings>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
    {
        // 創(chuàng)建菜單欄
        QMenuBar *menuBar = menuBar();

        // 創(chuàng)建文件菜單
        QMenu *fileMenu = menuBar->addMenu("&File");

        // 創(chuàng)建新建文件動作
        newAction = new QAction("&New", this);
        fileMenu->addAction(newAction);

        // 從配置文件加載新建文件快捷鍵
        loadShortcut(newAction, "File/New");
    }

private:
    void loadShortcut(QAction *action, const QString &key)
    {
        QSettings settings("MyApp", "Settings");
        QString shortcutStr = settings.value(key).toString();
        if (!shortcutStr.isEmpty())
        {
            QKeySequence shortcut(shortcutStr);
            action->setShortcut(shortcut);
        }
    }

private:
    QAction *newAction;
};

#include <QApplication>
#include <QMainWindow>
#include <QMenuBar>
#include <QMenu>
#include <QAction>
#include <QKeySequence>
#include <QMessageBox>
#include <QMap>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
    {
        // 創(chuàng)建菜單欄
        QMenuBar *menuBar = menuBar();

        // 創(chuàng)建文件菜單
        QMenu *fileMenu = menuBar->addMenu("&File");

        // 創(chuàng)建保存動作
        saveAction = new QAction("&Save", this);
        connect(saveAction, &QAction::triggered, this, &MainWindow::saveFile);
        fileMenu->addAction(saveAction);

        // 創(chuàng)建另存為動作
        saveAsAction = new QAction("&Save As", this);
        connect(saveAsAction, &QAction::triggered, this, &MainWindow::saveFileAs);
        fileMenu->addAction(saveAsAction);

        // 假設初始設置保存快捷鍵為Ctrl+S
        setShortcut(saveAction, "Ctrl+S");

        // 嘗試設置另存為快捷鍵為Ctrl+S，會檢測沖突
        setShortcut(saveAsAction, "Ctrl+S");
    }

private slots:
    void saveFile()
    {
        // 實際的保存文件邏輯
    }

    void saveFileAs()
    {
        // 實際的另存為文件邏輯
    }

private:
    void setShortcut(QAction *action, const QString &shortcutStr)
    {
        QKeySequence shortcut(shortcutStr);
        if (shortcutMap.contains(shortcut))
        {
            QAction *conflictingAction = shortcutMap[shortcut];
            QMessageBox::warning(this, "Shortcut Conflict", QString("The shortcut %1 is already used by %2.").arg(shortcutStr).arg(conflictingAction->text()));
        }
        else
        {
            action->setShortcut(shortcut);
            shortcutMap[shortcut] = action;
        }
    }

private:
    QAction *saveAction;
    QAction *saveAsAction;
    QMap<QKeySequence, QAction*> shortcutMap;
};