Qt标准对话框之输入对话框(QInputDialog)

public slots:
void inputText();
void inputInt();
void inputDouble();
private:
QLineEdit *line1;
QLineEdit *line2;
QLineEdit *line3;

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
resize(600,600);
QPushButton *btn1 = new QPushButton(tr("输入用户名"),this);
QPushButton *btn2 = new QPushButton(tr("输入年龄"),this);
QPushButton *btn3 = new QPushButton(tr("输入金额"),this);
line1 = new QLineEdit(this);
line2 = new QLineEdit(this);
line3 = new QLineEdit(this);
line1->move(100,150);
line2->move(100,200);
line3->move(100,250);
btn1->move(220,150);
btn2->move(220,200);
btn3->move(220,250);
connect(btn1,&QPushButton::clicked,this,&MainWindow::inputText);
connect(btn2,&QPushButton::clicked,this,&MainWindow::inputInt);
connect(btn3,&QPushButton::clicked,this,&MainWindow::inputDouble);
}

void MainWindow::inputText()
{
bool ok;
QString text = QInputDialog::getText(this,tr("输入字符串"),tr("请输入用户名:"),QLineEdit::Normal,tr("游客"),&ok);
if(ok) line1->setText(text);
}

void MainWindow::inputInt()
{
bool ok;
//初始值 最小值 最大值 滑动值
int age = QInputDialog::getInt(this,tr("输入年龄"),tr("age"),18,18,100,1,&ok);
if(ok) line2->setText(QString::number(age,10));
}

void MainWindow::inputDouble()
{
bool ok;
double price = QInputDialog::getDouble(this,tr("输入金额"),tr("金额"),0.0,0.0,1000.0,2,&ok);
if(ok) line3->setText(QString::number(price,'g',6));
}