1.Mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<stdio.h>
#include<stdlib.h>
static int v=0;
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::timerEvent(QTimerEvent *event)
{
v++;
ui->lineEdit->setText(QString::number(v));
ui->horizontalSlider->setValue(v);
if(v==100)
{
v=0;
}
}
void MainWindow::on_pushButton_clicked()
{
QString str=ui->lineEdit->text();
int val=str.toInt();
v=val;
ui->horizontalSlider->setValue(v);
}
void MainWindow::on_pushButton_2_clicked()
{
timeId=this->startTimer(1000);
//QObject::connect(ui->lineEdit,SINGAL(valueChanged(int)),ui->horizontalSlider,SLOT(SetValue(int)));
}
2.MAINWINDOW.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QWidget>
#include <QLineEdit>
#include<Qtimer>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private slots:
void on_pushButton_clicked();
void on_pushButton_2_clicked();
private:
int timeId;
void timerEvent(QTimerEvent *event);
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H
windows2017Exam01
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转载自blog.csdn.net/qq_39157144/article/details/80855116
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