Qt QProgress

Qt QProgress

Progress.pro

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Progress
TEMPLATE = app

DEFINES += QT_DEPRECATED_WARNINGS

SOURCES += main.cpp 
    progressdlg.cpp

HEADERS  += progressdlg.h

main.cpp

#include "progressdlg.h"
#include 

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

    ProgressDlg w;
    w.show();

    return a.exec();
}

progressdlg.h

#ifndef PROGRESSDLG_H
#define PROGRESSDLG_H

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

class ProgressDlg : public QDialog {
    Q_OBJECT
public:
    explicit ProgressDlg(QWidget *parent = 0);
private slots:
    void startProgress();
private:
    QFont font;
    QLabel *FileNum;
    QLineEdit *FileNumLineEdit;
    QLabel *ProgressType;
    QComboBox *comboBox;
    QProgressBar *progressBar;
    QPushButton *starBtn;
    QGridLayout *mainLayout;
};

#endif // PROGRESSDLG_H

progressdlg.cpp

#include "progressdlg.h"
#include 
#include 

ProgressDlg::ProgressDlg(QWidget *parent) : QDialog(parent) {
    font.setFamily("ZYSong18030");
    font.setPointSize(12);
    setFont(font);

    setWindowFlags(Qt::WindowCloseButtonHint);
    setWindowTitle(tr("Progress"));

    FileNum =new QLabel(tr("文件数目："));
    FileNumLineEdit =new QLineEdit(tr("100000"));
    ProgressType = new QLabel(tr("显示类型："));
    comboBox = new QComboBox;
    comboBox->addItem(tr("progressBar"));
    comboBox->addItem(tr("progressDialog"));
    progressBar = new QProgressBar;
    starBtn = new QPushButton(tr("开始"));
    connect(starBtn, SIGNAL(clicked()), this, SLOT(startProgress()), Qt::UniqueConnection);

    mainLayout = new QGridLayout(this);
    mainLayout->addWidget(FileNum, 0, 0);
    mainLayout->addWidget(FileNumLineEdit, 0, 1);
    mainLayout->addWidget(ProgressType, 1, 0);
    mainLayout->addWidget(comboBox, 1, 1);
    mainLayout->addWidget(progressBar, 2, 0, 1, 2);
    mainLayout->addWidget(starBtn, 3, 1);
    mainLayout->setMargin(15);
    mainLayout->setSpacing(10);
}

void ProgressDlg::startProgress() {
    bool ok;
    int num = FileNumLineEdit->text().toInt(&ok);
    if(ok) {
        starBtn->setEnabled(false);

        if(comboBox->currentIndex() == 0) {    	//采用进度条的方式显示进度
            progressBar->setRange(0, num);
            for(int i=1; isetValue(i);
            }
            progressBar->reset();
        } else if(comboBox->currentIndex() == 1) { //采用进度对话框显示进度
            //创建一个进度对话框
            QProgressDialog *progressDialog = new QProgressDialog(this);
            progressDialog->setFont(font);

            progressDialog->setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);
            progressDialog->setWindowModality(Qt::WindowModal);
            progressDialog->setMinimumDuration(5);
            progressDialog->setWindowTitle(tr("Please Wait"));
            progressDialog->setLabelText(tr("Copying..."));
            progressDialog->setCancelButtonText(tr("Cancel"));
            progressDialog->setRange(0, num);//设置进度对话框的步进范围
            for(int i=1; isetValue(i);
                if(progressDialog->wasCanceled())
                    return;
            }
        }

        //防止按钮快速重复点击
        QTimer::singleShot(1000, this, [=]{starBtn->setEnabled(true);});
    }
}