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justhomework/SoftwareDesign/Lab2/2-2-5/mainwindow.h
2022-04-26 14:51:03 +08:00

49 lines
903 B
C++

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