QT做的计算器点按钮没反应

[cnbaixf]

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include<QDialog>
#include<QPushButton>
#include<QLineEdit>
#include<QString>
namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
protected:
    QPushButton* pushButton;
    QPushButton* pushButton_2;
    QPushButton* pushButton_3;
    QPushButton* pushButton_4;
    QPushButton* pushButton_5;
    QPushButton* pushButton_6;
    QPushButton* pushButton_7;
    QPushButton* pushButton_8;
    QPushButton* pushButton_9;
    QPushButton* pushButton_10;
    QPushButton* pushButton_11;
    QPushButton* pushButton_12;
    QPushButton* pushButton_13;
    QPushButton* pushButton_14;
    QPushButton* pushButton_15;
    QPushButton* pushButton_16;

    QLineEdit* lineEdit;

    float num1,num2,result;//数1、数2、结果
    QString S;
    char sign;
    int mark;//点击过运算符号，mark=1，默认是0

private slots:
    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

    void on_pushButton_3_clicked();

    void on_pushButton_4_clicked();

    void on_pushButton_5_clicked();

    void on_pushButton_6_clicked();

    void on_pushButton_7_clicked();

    void on_pushButton_8_clicked();

    void on_pushButton_9_clicked();

    void on_pushButton_10_clicked();

    void on_pushButton_11_clicked();

    void on_pushButton_12_clicked();

    void on_pushButton_13_clicked();

    void on_pushButton_14_clicked();

    void on_pushButton_15_clicked();

    void on_pushButton_16_clicked();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

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

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    //初始化变量
    num1=0.0;
    num2=0.0;
    result=0.0;
    S="";
    mark=0;
    //初始化部件对象指针
    pushButton=new QPushButton("1");
    pushButton_2=new QPushButton("2");
    pushButton_3=new QPushButton("3");
    pushButton_4=new QPushButton("4");
    pushButton_5=new QPushButton("5");
    pushButton_6=new QPushButton("6");
    pushButton_7=new QPushButton("7");
    pushButton_8=new QPushButton("8");
    pushButton_9=new QPushButton("9");
    pushButton_10=new QPushButton("0");
    pushButton_11=new QPushButton("+");
    pushButton_12=new QPushButton("-");
    pushButton_13=new QPushButton("*");
    pushButton_14=new QPushButton("/");
    pushButton_15=new QPushButton("=");
    pushButton_16=new QPushButton("C");

    lineEdit=new QLineEdit("S");
    lineEdit->setText(S);

    //实现连接函数
    connect(pushButton,SIGNAL(clicked()),this,SLOT(on_pushButton_clicked()));
    connect(pushButton_2,SIGNAL(clicked()),this,SLOT(on_pushButton_2_clicked()));
    connect(pushButton_3,SIGNAL(clicked()),this,SLOT(on_pushButton_3_clicked()));
    connect(pushButton_4,SIGNAL(clicked()),this,SLOT(on_pushButton_4_clicked()));
    connect(pushButton_5,SIGNAL(clicked()),this,SLOT(on_pushButton_5_clicked()));
    connect(pushButton_6,SIGNAL(clicked()),this,SLOT(on_pushButton_6_clicked()));
    connect(pushButton_7,SIGNAL(clicked()),this,SLOT(on_pushButton_7_clicked()));
    connect(pushButton_8,SIGNAL(clicked()),this,SLOT(on_pushButton_8_clicked()));
    connect(pushButton_9,SIGNAL(clicked()),this,SLOT(on_pushButton_9_clicked()));
    connect(pushButton_10,SIGNAL(clicked()),this,SLOT(on_pushButton_10_clicked()));
    connect(pushButton_11,SIGNAL(clicked()),this,SLOT(on_pushButton_11_clicked()));
    connect(pushButton_12,SIGNAL(clicked()),this,SLOT(on_pushButton_12_clicked()));
    connect(pushButton_13,SIGNAL(clicked()),this,SLOT(on_pushButton_13_clicked()));
    connect(pushButton_14,SIGNAL(clicked()),this,SLOT(on_pushButton_14_clicked()));
    connect(pushButton_15,SIGNAL(clicked()),this,SLOT(on_pushButton_15_clicked()));
    connect(pushButton_16,SIGNAL(clicked()),this,SLOT(on_pushButton_16_clicked()));
}

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

void MainWindow::on_pushButton_clicked()
{
    S+="1";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+1;
    else
        num2=num2*10+1;
}

void MainWindow::on_pushButton_2_clicked()
{
    S+="2";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+2;
    else
        num2=num2*10+2;
}

void MainWindow::on_pushButton_3_clicked()
{
    S+="3";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+3;
    else
        num2=num2*10+3;
}

void MainWindow::on_pushButton_4_clicked()
{
    S+="4";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+4;
    else
        num2=num2*10+4;
}

void MainWindow::on_pushButton_5_clicked()
{
    S+="5";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+5;
    else
        num2=num2*10+5;
}

void MainWindow::on_pushButton_6_clicked()
{
    S+="6";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+6;
    else
        num2=num2*10+6;
}

void MainWindow::on_pushButton_7_clicked()
{
    S+="7";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+7;
    else
        num2=num2*10+7;
}

void MainWindow::on_pushButton_8_clicked()
{
    S+="8";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+8;
    else
        num2=num2*10+8;
}

void MainWindow::on_pushButton_9_clicked()
{
    S+="9";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10+9;
    else
        num2=num2*10+9;
}

void MainWindow::on_pushButton_10_clicked()
{
    S+="0";
    lineEdit->setText(S);
    if(mark==0)
        num1=num1*10;
    else
        num2=num2*10;
}

void MainWindow::on_pushButton_11_clicked()
{
    S+="+";
    lineEdit->setText(S);
    sign='+';
    mark=1;
}

void MainWindow::on_pushButton_12_clicked()
{
    S+="-";
    lineEdit->setText(S);
    sign='-';
    mark=1;
}

void MainWindow::on_pushButton_13_clicked()
{
    S+="*";
    lineEdit->setText(S);
    sign='*';
    mark=1;
}

void MainWindow::on_pushButton_14_clicked()
{
    S+="/";
    lineEdit->setText(S);
    sign='/';
    mark=1;
}

void MainWindow::on_pushButton_15_clicked()
{
    S+="=";
    switch (sign) {
    case '+':
        result=num1+num2;
        break;
    case '-':
        result=num1-num2;
        break;
    case '*':
        result=num1*num2;
        break;
    case '/':
        result=num1/num2;
        break;
    default:
        break;
    }
    S+=QString("%1").arg(result);//float转QString
    lineEdit->setText(S);
}

void MainWindow::on_pushButton_16_clicked()
{
    S="";
    lineEdit->setText(S);
    num1=0;
    num2=0;
    result=0;
    mark=0;
}

有大神可以指点下吗

[赵4老师]

百度搜相关关键字。

[cnbaixf]

引用 1 楼 zhao4zhong1 的回复:

百度搜相关关键字。

如果百度能搜到原因我怎么会来这问

[FoolCarpe]

pushButton*对象绑定的不是ui上的对象

[FoolCarpe]

引用 3 楼 hefashion0190 的回复:

pushButton*对象绑定的不是ui上的对象

类似于这样

pushButton = ui->pushButton;
pushButton2 = ui->pushButton2;

[cnbaixf]

引用 4 楼 hefashion0190 的回复:

[quote=引用 3 楼 hefashion0190 的回复:] pushButton*对象绑定的不是ui上的对象

类似于这样

pushButton = ui->pushButton;
pushButton2 = ui->pushButton2;

[/quote] 感谢大神