标准对话框的使用

代码源于书本，以备以后查看

StandardDialogs.h

#ifndef __STANDARDDIALOGS_H__#define __STANDARDDIALOGS_H__#include <QApplication>#include <QDialog>#include <QtGui/QtGui>class StandardDialogs : public QDialog{Q_OBJECTpublic: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 // __STANDARDDIALOGS_H__ 

StandardDialogs.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);}}