49 lines
815 B
C
49 lines
815 B
C
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#ifndef MAINWINDOW_H
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#define MAINWINDOW_H
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#include <QKeyEvent>
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#include <QMainWindow>
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QT_BEGIN_NAMESPACE
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namespace Ui {
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class MainWindow;
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}
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QT_END_NAMESPACE
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class MainWindow : public QMainWindow {
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Q_OBJECT
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public:
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MainWindow(QWidget *parent = nullptr);
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~MainWindow();
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private:
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Ui::MainWindow *ui;
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void keyPressEvent(QKeyEvent *e);
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//终止运算，清除数据，报错
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void abortOperation();
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//连接信号和槽
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void connectSlots();
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//储存运算符
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QString pendingOperator;
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//储存运算结果
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double result;
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//标记是否等待一个操作数
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bool waitForOperand;
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bool isFinished;
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private slots:
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void on_clearBtn_clicked();
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void on_clearAllBtn_clicked();
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void on_equalBtn_clicked();
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void digitClicked();
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void operatorClicked();
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};
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#endif // MAINWINDOW_H
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