使用标准输入对话框

使用标准输入对话框

这次演示一下使用标准输入框QInputDialog，QInputDialog类目前提供了4中数据类型的输入：字符串，Int数据，double类数据，下拉列表框。

1、创建inputdialog.h

#ifndef INPUTDIALOG_H#define INPUTDIALOG_H#include <QtGui>class InputDlg : public QDialog{    Q_OBJECTpublic:    InputDlg();public:    QPushButton *nameButton;    QPushButton *sexButton;    QPushButton *ageButton;    QPushButton *statureButton;    QLabel *label1;    QLabel *label2;    QLabel *label3;    QLabel *label4;    QLabel *nameLabel;    QLabel *sexLabel;    QLabel *ageLabel;    QLabel *statureLabel;private slots:    void slotName();    void slotSex();    void slotAge();    void slotStature();};#endif // INPUTDIALOG_H

2、创建inputdialog.cpp

#include "inputdialog.h"InputDlg::InputDlg(){    setWindowTitle(tr("Input Dialog"));    label1 = new QLabel(tr("Name : "));    label2 = new QLabel(tr("Sex : "));    label3 = new QLabel(tr("Age : "));    label4 = new QLabel(tr("Stature : "));    nameLabel = new QLabel(tr("LiMing"));    nameLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);    sexLabel = new QLabel(tr("male"));    sexLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);    ageLabel = new QLabel(tr("25"));    ageLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);    statureLabel = new QLabel(tr("175.5"));    statureLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);    nameButton = new QPushButton;    nameButton->setIcon(QIcon(":/images/btn.png"));    sexButton = new QPushButton;    sexButton->setIcon(QIcon(":/images/btn.png"));    ageButton = new QPushButton;    ageButton->setIcon(QIcon(":/images/btn.png"));    statureButton = new QPushButton;    statureButton->setIcon(QIcon(":/images/btn.png"));    QGridLayout *layout = new QGridLayout(this);    int name = 0;    int sex = 1;    int age = 2;    int stature = 3;    layout->addWidget( label1, name, 0 );    layout->addWidget( nameLabel, name, 1 );    layout->addWidget( nameButton, name, 2 );    layout->addWidget( label2, sex, 0 );    layout->addWidget( sexLabel, sex, 1 );    layout->addWidget( sexButton, sex, 2 );    layout->addWidget( label3, age, 0 );    layout->addWidget( ageLabel, age, 1 );    layout->addWidget( ageButton, age, 2 );    layout->addWidget( label4, stature, 0 );    layout->addWidget( statureLabel, stature, 1 );    layout->addWidget( statureButton, stature, 2 );    layout->setMargin(15);    layout->setSpacing(10);    layout->setColumnMinimumWidth(1,120);    connect(nameButton,SIGNAL(clicked()),this,SLOT(slotName()));    connect(sexButton,SIGNAL(clicked()),this,SLOT(slotSex()));    connect(ageButton,SIGNAL(clicked()),this,SLOT(slotAge()));    connect(statureButton,SIGNAL(clicked()),this,SLOT(slotStature()));}void InputDlg::slotName(){    bool ok;    QString name = QInputDialog::getText(this,tr("User Name"),                                         tr("Please input new name"),                                         QLineEdit::Normal,                                         nameLabel->text(),&ok);    if(ok && !name.isEmpty())        nameLabel->setText(name);}void InputDlg::slotSex(){    QStringList list;    list << tr("male") << tr("female");    bool ok;    QString sex = QInputDialog::getItem(this,tr("Sex"),                                        tr("Please select sex"),                                        list,0,false,&ok);    if(ok)        sexLabel->setText(sex);}void InputDlg::slotAge(){    bool ok;    int age = QInputDialog::getInteger(this,tr("User Age"),                                       tr("Please input age:"),                                       ageLabel->text().toInt(),                                       0,150,1,&ok);    if(ok)        ageLabel->setText(QString(tr("%1")).arg(age));}void InputDlg::slotStature(){    bool ok;    double d = QInputDialog::getDouble(this,tr("Stature"),                                       tr("Please input stature:"),                                       175.00,0,230.00,1,&ok);    if(ok)        statureLabel->setText(QString(tr("%1")).arg(d));}

3、创建main.cpp

#include "inputdialog.h"#include <QApplication>int main( int argc, char **argv ){    QApplication app( argc, argv );    InputDlg *input = new InputDlg();    input->show();    return app.exec();}

4、创建资源文件inputdialog.qrc
下面演示一下怎么创建资源文件：
a、在工程目录下新建一个images目录，把资源图片放到images目录下面。

b、创建资源文件，命名inputdialog。

c、用Qt Creator打开inputdialog.qrc文件。

d、添加前缀，填进去”/”就行。

e、添加文件，把images下的图片资源加进去就ok了，保存文件。一定要保证自己的图片名字和代码里的名字和路径保持一致，要不然会找不到资源图片。

5、运行代码

6、代码和图片资源文件