[Qt]标准对话框

standdlg.h

#ifndef STANDARDDIALOGS_H
#define STANDARDDIALOGS_H

#include <QtGui>

class StandardDialogs : public QDialog
{
    Q_OBJECT
public:
    StandardDialogs( QWidget *parent=0, Qt::WindowFlags f=0 );
    ~StandardDialogs();
public:
    QGridLayout *layout;

    QPushButton *filePushButton;
    QPushButton *colorPushButton;
    QPushButton *fontPushButton;

    QLineEdit *fileLineEdit;
    QLineEdit *fontLineEdit;
    QFrame *colorFrame;

private slots:
    void slotOpenFileDlg();
    void slotOpenColorDlg();
    void slotOpenFontDlg();

};


#endif

standarddlg.cpp

#include "standarddialogs.h"

StandardDialogs::StandardDialogs( QWidget *parent, Qt::WindowFlags f )
    : QDialog( parent, f )
{
    setWindowTitle(tr("Standard Dialogs"));

    layout = new QGridLayout( this );

    filePushButton = new QPushButton();
    filePushButton->setText(tr("File Dialog"));

    colorPushButton = new QPushButton();
    colorPushButton->setText(tr("Color Dialog"));

    fontPushButton = new QPushButton( );
    fontPushButton->setText(tr("Font Dialog"));

    fileLineEdit = new QLineEdit();

    colorFrame = new QFrame();
    colorFrame->setFrameShape( QFrame::Box );
    colorFrame->setAutoFillBackground(true);

    fontLineEdit = new QLineEdit( );
    fontLineEdit->setText(tr("Hello World"));

    layout->addWidget( filePushButton, 0, 0 );
    layout->addWidget( fileLineEdit, 0, 1 );
    layout->addWidget( colorPushButton, 1, 0 );
    layout->addWidget( colorFrame, 1, 1 );
    layout->addWidget( fontPushButton, 2, 0 );
    layout->addWidget( fontLineEdit, 2, 1 );
    layout->setMargin(15);
    layout->setSpacing(10);

    connect(filePushButton,SIGNAL(clicked()),this,SLOT(slotOpenFileDlg()));
    connect(colorPushButton,SIGNAL(clicked()),this,SLOT(slotOpenColorDlg()));
    connect(fontPushButton,SIGNAL(clicked()),this,SLOT(slotOpenFontDlg()));
}

StandardDialogs::~StandardDialogs()
{
}

void StandardDialogs::slotOpenFileDlg()
{
    QString s = QFileDialog::getOpenFileName(
    this, "open file dialog",
        "/",
        "C++ files (*.cpp);;C files (*.c);;Head files (*.h)");

    fileLineEdit->setText( s.toAscii() );
}

void StandardDialogs::slotOpenColorDlg()
{
    QColor color = QColorDialog::getColor (Qt::blue);

    if(color.isValid())
    {
        colorFrame->setPalette(QPalette(color));
    }
}

void StandardDialogs::slotOpenFontDlg()
{
    bool ok;

    QFont font = QFontDialog::getFont( &ok );

    if( ok )
    {
        fontLineEdit->setFont( font );
    }

}

main.cpp

#include "standarddialogs.h"
#include <QApplication>

int main( int argc, char **argv )
{
    QFont font("ZYSong18030",12);
    QApplication::setFont(font);

    QApplication a( argc, argv );
    QTranslator translator(0);
    translator.load("standarddialogs_zh",".");
    a.installTranslator(&translator);

    StandardDialogs *standarddialogs = new StandardDialogs();
    standarddialogs->show();
    return a.exec();
}

程序效果