Qt实现名字的"幸运大抽奖"

话不多说,上图:

/*----------------Luck.h--------------------*/
#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>
#include <QLabel>
#include <QPushButton>
#include <QTimer>
#include <QGridLayout>
#include <QByteArray>

class Dialog : public QDialog
{
    Q_OBJECT

public:
    Dialog(QWidget *parent = 0);
    ~Dialog();
private slots:
    void add();
    void on_time();
private:
    QPushButton * btn1;
    QLabel * label1;
    QTimer * timer;
};
#endif // DIALOG_H

/*----------------Luck.h--------------------*/

/*----------------Luck.cpp--------------------*/
#include "dialog.h"

Dialog::Dialog(QWidget *parent)
    : QDialog(parent)
{

    setWindowTitle(tr("Qt幸运大抽奖"));
    timer = new QTimer(this);
    btn1 = new QPushButton;
    label1 = new QLabel;

    QFont font1("Microsoft YaHei", 30,25);
    QFont font2("Fantasy",20);
    label1->setFont(font1);
    label1->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
    label1->setText(tr("点击↓开始"));

    btn1->setFont(font2);
    btn1->setText(tr("幸运大抽奖"));
    QGridLayout *layout = new QGridLayout(this);
    layout->addWidget(label1, 0 ,1);
    layout->addWidget(btn1, 1, 1);
    connect(btn1,SIGNAL(clicked()),this,SLOT(add()));
    connect(timer,SIGNAL(timeout()),this,SLOT(on_time()));
}

Dialog::~Dialog()
{

}

void Dialog::add()
{
    if(timer->isActive())
    {
        setWindowTitle(tr("Qt本轮幸运得主:"));
        timer->stop();
        btn1->setText(tr("幸运大抽奖"));
    }else
    {
        setWindowTitle(tr("Qt抽奖中..."));
        timer->start(30);
        btn1->setText(tr("暂停"));
    }
}

void Dialog::on_time()
{
    FILE * file;
    static int a = 0;
    file = fopen("C:\\Users\\Administrator\\Desktop\\xixi.txt","r");

    char buf[10];
    memset(buf, 0, sizeof(buf));

s1:
    int i = 0;
    a++;
    while(fgets(buf, sizeof(buf),file))
    {
        if( ++i == a)
        {
            QString s1 = QString::fromLocal8Bit(buf);
            label1->setText((s1));
            break;
        }
    }

    if(feof(file))
    {
        a = 0;
        rewind(file);
        goto s1;
    }
    fclose(file);
}

/*----------------Luck.cpp--------------------*/

/*----------------main.cpp--------------------*/
#include "dialog.h"
#include <QApplication>
#include <QMessageBox>
#include <windows.h>

int main(int argc, char *argv[])
{

    QApplication a(argc, argv);
    Dialog w;

    w.show();

    return a.exec();
}

/*----------------main.cpp--------------------*/

备份地址: 【Qt实现名字的"幸运大抽奖"】