Qt5之擴展對話框與在QLabel中顯示中文的辦法

//mainwindow.h

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include<QDialog>

#include<QLabel>

#include<QLineEdit>

#include<QComboBox>

#include<QPushButton>

#include<QVBoxLayout>

#include<QGridLayout>

#include<QTextCodec>

class MainWindow : public QDialog

{

    Q_OBJECT

public:

    //QTextCodec::setCodecForTr(QTextCodec::codecForName("GBK"));這種辦法不起作用，

     //在    QT5中

    MainWindow(QWidget *parent = 0);

    void creatBaseInfo();

    void creatDetialInfo();

private:

    QWidget *baseWidget;

    QWidget *detailWidget;

private slots:

    void slotExtendWidget();

    //~MainWindow();

};

#endif // MAINWINDOW_H

 

 

//mainwindow.cpp

#include "mainwindow.h"

#include<QTextCodec>

#include<QString>

MainWindow::MainWindow(QWidget *parent)

    : QDialog(parent)

{

    creatBaseInfo();

    creatDetialInfo();

    QVBoxLayout *vLayout=new QVBoxLayout;

    vLayout->addWidget(baseWidget);

    vLayout->addWidget(detailWidget);

    vLayout->setSpacing(10);

    vLayout->setSizeConstraint(QLayout::SetFixedSize);

    //這一條代碼很重要，當擴展對話框時避免佈局發生變化

    this->setLayout(vLayout);

}

//MainWindow::~MainWindow()

//{

//}

void MainWindow::creatBaseInfo()

{

    baseWidget=new QWidget;

    QLabel *nameLabel=new QLabel;

    QString s1 =QString::fromUtf8("姓名");//這是在qlabel中顯示中文的辦法

    nameLabel->setText(s1);

    QLineEdit *nameLineEdit=new QLineEdit;

    QPushButton *okPushButton=new QPushButton;

    QString s2=QString::fromUtf8("確認");

    okPushButton->setText(s2);

    QLabel *sexLabel=new QLabel;

    QString s3=QString::fromUtf8("性別");

    sexLabel->setText(s3);

    QComboBox *sexCombox=new QComboBox;

    QString s4=QString::fromUtf8("男x");

    //不知爲何”男“時，他就說後面有換行符

    QString s5=QString::fromUtf8("女x");

    sexCombox->insertItem(0,s4);

    sexCombox->insertItem(1,s5);

    QPushButton *detailPushButton=new QPushButton;

    QString s6=QString::fromUtf8("詳細");

    detailPushButton->setText(s6);

    QGridLayout *mainGridLayout=new QGridLayout;

    mainGridLayout->addWidget(nameLabel,0,0);

    mainGridLayout->addWidget(nameLineEdit,0,1);

    mainGridLayout->addWidget(okPushButton,0,2);

    mainGridLayout->addWidget(sexLabel,1,0);

    mainGridLayout->addWidget(sexCombox,1,1);

    mainGridLayout->addWidget(detailPushButton,1,2);

    mainGridLayout->setMargin(10);

    mainGridLayout->setSpacing(10);

    baseWidget->setLayout(mainGridLayout);

    connect(detailPushButton,SIGNAL(clicked()),this,SLOT(slotExtendWidget()));

}

void MainWindow::creatDetialInfo()

{

    detailWidget=new QWidget;

    QLabel *ageLabel=new QLabel;

    QString s1=QString::fromUtf8("年齡");

    ageLabel->setText(s1);

    QLineEdit *ageLineEdit=new QLineEdit;

    ageLineEdit->setText("18");

    QGridLayout *mainGrid=new QGridLayout;

    mainGrid->addWidget(ageLabel,0,0);

    mainGrid->addWidget(ageLineEdit,0,1);

    detailWidget->setLayout(mainGrid);

    detailWidget->hide();

}

void MainWindow::slotExtendWidget()

{

    if(detailWidget->isHidden())

        detailWidget->show();

    else

        detailWidget->hide();

}

 

//main.cpp

#include "mainwindow.h"

#include <QApplication>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    MainWindow w;

    w.show();

    return a.exec();

}