QCharts绘制正余弦曲线 Qt Charts 是Qt提供的图表模块，能够绘制常见的折线图、柱状图、饼图等图表

/**************************************************************************** ** Meta object code from reading C++ file 'mainwindow.h' ** ** Created by: The Qt Meta Object Compiler version 67 (Qt 5.15.2) ** ** WARNING! All changes made in this file will be lost! *****************************************************************************/ #include <memory> #include "../mainwindow.h" #include <QtCore/qbytearray.h> #include <QtCore/qmetatype.h> #if !defined(Q_MOC_OUTPUT_REVISION) #error "The header file 'mainwindow.h' doesn't include <QObject>." #elif Q_MOC_OUTPUT_REVISION != 67 #error "This file was generated using the moc from 5.15.2. It" #error "cannot be used with the include files from this version of Qt." #error "(The moc has changed too much.)" #endif QT_BEGIN_MOC_NAMESPACE QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED struct qt_meta_stringdata_MainWindow_t { QByteArrayData data[1]; char stringdata0[11]; }; #define QT_MOC_LITERAL(idx, ofs, len) \ Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER_WITH_OFFSET(len, \ qptrdiff(offsetof(qt_meta_stringdata_MainWindow_t, stringdata0) + ofs \ - idx * sizeof(QByteArrayData)) \ ) static const qt_meta_stringdata_MainWindow_t qt_meta_stringdata_MainWindow = { { QT_MOC_LITERAL(0, 0, 10) // "MainWindow" }, "MainWindow" }; #undef QT_MOC_LITERAL static const uint qt_meta_data_MainWindow[] = { // content: 8, // revision 0, // classname 0, 0, // classinfo 0, 0, // methods 0, 0, // properties 0, 0, // enums/sets 0, 0, // constructors 0, // flags 0, // signalCount 0 // eod }; void MainWindow::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a) { Q_UNUSED(_o); Q_UNUSED(_id); Q_UNUSED(_c); Q_UNUSED(_a); } QT_INIT_METAOBJECT const QMetaObject MainWindow::staticMetaObject = { { QMetaObject::SuperData::link<QMainWindow::staticMetaObject>(), qt_meta_stringdata_MainWindow.data, qt_meta_data_MainWindow, qt_static_metacall, nullptr, nullptr } }; const QMetaObject *MainWindow::metaObject() const { return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject; } void *MainWindow::qt_metacast(const char *_clname) { if (!_clname) return nullptr; if (!strcmp(_clname, qt_meta_stringdata_MainWindow.stringdata0)) return static_cast<void*>(this); return QMainWindow::qt_metacast(_clname); } int MainWindow::qt_metacall(QMetaObject::Call _c, int _id, void **_a) { _id = QMainWindow::qt_metacall(_c, _id, _a); return _id; } QT_WARNING_POP QT_END_MOC_NAMESPACE