[QT] timer - greatcat 的部落格

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[QT] timer

2021/05/10 15:05:24瀏覽71｜回應0｜推薦0

mainwindow.h

#include <QTimer>
private slots:
    void on_tmr();

private:
    Ui::MainWindow *ui;
    QTimer *tmr1;
//------------------------
mainwindow.cpp
#include <QTimer>

void MainWindow::on_pushButton_clicked()
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{

    tmr1= new QTimer;
    connect(tmr1,SIGNAL(timeout()),this,SLOT(on_tmr()));
    ui->setupUi(this);
}
{

    if (tmr1->isActive()) {
        tmr1->stop();
    } else {
        tmr1->start(100);
    }
}
void MainWindow::on_tmr() {
    int i1;
    i1 = ui->dial->value();
    if (i1 < 90) {
        i1++;
        ui->dial->setValue(i1);
    } else {
        tmr1->stop();
    }
}

void MainWindow::on_pushButton_2_clicked()
{
    tmr1->stop();
}

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