Qt 任务栏显示进度条

注意事项：

1. 修改pro文件
2. 界面展示后再 new QWinTaskbarButton，否则会不显示

# Qt 官方demo

QWinTaskbarButton *button = new QWinTaskbarButton(widget);
button->setWindow(widget->windowHandle());
button->setOverlayIcon(QIcon(":/loading.png"));

QWinTaskbarProgress *progress = button->progress();
progress->setVisible(true);
progress->setValue(50);

# Demo

1 修改pro文件

win32:QT += winextras

2 .h

#ifndef TASKBARPROGRESS_H
#define TASKBARPROGRESS_H
 
#include <QMainWindow>
#include <QTimer>
#include <QAbstractButton>
#include <QWinTaskbarProgress>
#include <QWinTaskbarButton>
 
 
namespace Ui {
class TaskbarProgress;
}
 
class TaskbarProgress : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit TaskbarProgress(QWidget *parent = 0);
    ~TaskbarProgress();
 
    void onButtonClicked();
 
    void onTimeout();
 
private:
    Ui::TaskbarProgress *ui;
 
    QTimer *timer;
 
    QWinTaskbarButton *windowsTaskbarButton;
 
    QWinTaskbarProgress *windowsTaskbarProgress;
};
 
#endif // TASKBARPROGRESS_H

3 .cpp

#include "taskbarprogress.h"
#include "ui_taskbarprogress.h"
 
TaskbarProgress::TaskbarProgress(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::TaskbarProgress)
{
    ui->setupUi(this);
 
    timer = new QTimer;
    timer->setInterval(1000);     //设置时间间隔
 
    //创建显示进度的任务栏按钮
    windowsTaskbarButton = new QWinTaskbarButton(this);
    connect(timer, &QTimer::timeout, this, &TaskbarProgress::onTimeout);
    connect(ui->Btn_Start, &QAbstractButton::clicked, this, &TaskbarProgress::onButtonClicked);
}
 
TaskbarProgress::~TaskbarProgress()
{
    delete ui;
}
 
void TaskbarProgress::onButtonClicked() {
    //将任务栏按钮关联到进度栏，假设进度栏是它自己的窗口
    windowsTaskbarButton->setWindow(windowHandle());
    windowsTaskbarProgress = windowsTaskbarButton->progress();
    windowsTaskbarProgress->setRange(0, 100);
    timer->start();
}
 
void TaskbarProgress::onTimeout() {
    //当进度条的值发生变化时，更改任务栏中的进度值
    windowsTaskbarProgress->setValue(windowsTaskbarProgress->value() + 20);
    windowsTaskbarProgress->show();
    if (windowsTaskbarProgress->value() > 99) {
        windowsTaskbarProgress->setValue(0);
        timer->stop();
    }
}