57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
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#include "widget.h"
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#include <QDebug>
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Widget::Widget(QWidget *parent)
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: QWidget(parent)
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{
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setWindowTitle("加法计数器");
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setFixedSize(500,100);
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QPushButton *sumBtn=new QPushButton("计算",this);
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sumBtn->setFixedSize(100,50);
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sumBtn->move(300,25);
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le1 = new QLineEdit(this);
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le2 = new QLineEdit(this);
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le1->setFixedSize(100,50);
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le2->setFixedSize(100,50);
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le1->move(0,25);
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le2->move(200,25);
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lable1 = new QLabel(this);
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lable1->setText("+");
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lable1->setFixedSize(10,50);
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lable1->move(145,25);
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lable2 = new QLabel(this);
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lable2->setText("计算结果");
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lable2->setFixedSize(100,50);
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lable2->move(400,25);
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connect(sumBtn,&QPushButton::clicked,this,&Widget::sum);
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// connect(sumBtn,&QPushButton::clicked,this,lable2->setText(QString::number(c)));
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}
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void Widget::sum(){
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lable2->setText("点击");
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QString n1 = le1->text();
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QString n2 = le2->text();
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qDebug() << n1 << " " << n2;
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// 将文本转化为数值
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int ret = n1.toInt()+n2.toInt();
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QString str = QString::number(ret);
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qDebug() << str;
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lable2->setText(str);
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}
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Widget::~Widget()
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{
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}
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