如何在qt的计时器中显示数字时间？ [英] how to show digit time in a timer in qt?

问题描述

我想在QT中创建一个显示分钟，秒和数百秒的计时器。我想在QPlaniTextEdit中显示数字。当我按下start_button时，必须在QPlaintextedit中显示计时器。我写了这段代码，但我不知道如何显示时间以及在插槽中写什么。我的计时器应该工作，直到按下暂停按钮。请帮帮我。



class Mainwindo :: public Mainwidow



Q_OBJECT



public：

显式MainWindow（QWidget * parent = 0）;

~MainWindow（）;

公共位置：



无效on_clicked_start（）;

私人：



QPushButton *开始;

QPushButton *暂停;

QPlainTextEdit * pl;

QElapsedTimer *时间;

Ui： ：MainWindow * ui;

};

connect（start，SIGNAL（clicked（）），this，SLOT（on_clicked_start（）））;

void MainWindow :: on_clicked_start（）



{

QString temp;

temp = QString :: number（time-> elapsed（））;

Myplaintext-> setPlainText（temp）;

}

I want to create a timer in QT that shows minutes, seconds and hundreds of a second. I want to show digits in a QPlaniTextEdit. When I push the start_button, there must be timer showed in QPlaintextedit. I wrote this code but I don't know how to show the time and what to write in slot. My timer should be working until the pause button is pushed. Please help me.

class Mainwindo::public Mainwidow

Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
public slots:

void on_clicked_start();
private:

QPushButton* start;
QPushButton* pause;
QPlainTextEdit* pl;
QElapsedTimer* time;
Ui::MainWindow *ui;
};
connect(start,SIGNAL(clicked()),this,SLOT(on_clicked_start()));
void MainWindow::on_clicked_start()

{
QString temp;
temp=QString::number(time->elapsed());
Myplaintext->setPlainText(temp);
}

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