php网站做代理服务器关键词排名优化软件策略
一.功能说明
在Qt中实现固件升级的进度条显示窗口，你可以通过创建一个自定义的对话框（Dialog）来完成。这个对话框可以包含一个进度条（QProgressBar）、一些文本标签（QLabel）用于显示状态信息，以及可能的按钮（如取消按钮）来允许用户中断升级过程（尽管在固件升级期间取消操作可能不被支持或需要谨慎处理）。
二.代码实现
1.frmupgrade.h
#ifndef FRMUPGRADE_H
#define FRMUPGRADE_H
#include <QDialog>
#include <QTimer>
namespace Ui {
class frmupgrade;
}
class frmupgrade : public QDialog
{
Q_OBJECT
public:
explicit frmupgrade(QWidget *parent = nullptr);
~frmupgrade();
public:
void upgrade_start();
private slots:
void Timer1UpDate();
void on_pushButton_clicked();
protected:
void closeEvent(QCloseEvent *event) override;
private:
Ui::frmupgrade *ui;
void Init();
QTimer *timer1 = nullptr;
int count;
};
#endif // FRMUPGRADE_H
2.frmupgrade.cpp
#include "frmupgrade.h"
#include "ui_frmupgrade.h"
frmupgrade::frmupgrade(QWidget *parent) :
QDialog(parent),
ui(new Ui::frmupgrade)
{
ui->setupUi(this);
Init();
}
frmupgrade::~frmupgrade()
{
delete ui;
}
void frmupgrade::closeEvent(QCloseEvent *event)
{
if(timer1 != nullptr){
timer1->stop();
delete timer1;
timer1 = nullptr;
}
}
/*升级界面初始化*/
void frmupgrade::Init()
{
ui->label_upgrade->hide();
ui->pushButton->hide();
ui->progressBar->setMinimum(0);
ui->progressBar->setMaximum(100);
ui->progressBar->setValue(0);
ui->progressBar->setStyleSheet("QProgressBar{border:1px solid skyblue;"
"background:white;"
"text-align:center;"
"color: red;"
"border-radius:0px;}"
"QProgressBar::chunk{"
"border-radius:0px;" // 斑马线圆角
"border:0px solid black;" // 黑边，默认无边
"background-color:green;"
"width:30px;margin:0.5px;}" // 宽度和间距
);
ui->progressBar->setOrientation(Qt::Horizontal);
count = 0;
if(timer1 != nullptr)
{
delete timer1;
timer1 = nullptr;
}
timer1 = new QTimer();
timer1->start(200);
connect(timer1, SIGNAL(timeout()), this, SLOT(Timer1UpDate()));
}
/*定时器读取升级进度*/
void frmupgrade::Timer1UpDate()
{
count = count+2 ; //10s进度条完成
ui->progressBar->setValue(count);
if(count>=100){
timer1->stop();
delete timer1;
timer1 = nullptr;
ui->label_upgrade->show();
ui->pushButton->show();
ui->label_upgrade->setText(tr("升级完成,请5秒后再重启设备!"));
}
}
/*关闭窗口*/
void frmupgrade::on_pushButton_clicked()
{
this->close();
}
void frmupgrade::upgrade_start()
{
Init();
this->show();
}
3.界面展示
完整工程代码下载：https://mp.csdn.net/mp_download/manage/download/UpDetailed