Qt标准对话框实现

#include "mywidget.h"
#include "ui_mywidget.h"
#include <QDebug>
#include <QColorDialog>
#include <QTextCodec>
#include "QFileDialog"
#include <QFontDialog>
#include <QInputDialog>
#include <QMessageBox>
#include <QProgressDialog>
#include <QErrorMessage>
#include <QWizard>

MyWidget::MyWidget(QWidget *parent) :
QWidget(parent),
ui(new Ui::MyWidget)
{
ui->setupUi(this);
}

MyWidget::~MyWidget()
{
delete ui;
}

void MyWidget::on_pushButton_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QColor color = QColorDialog::getColor(Qt::red, this, tr("颜色对话框")/*, QColorDialog::ShowAlphaChannel*/);
qDebug() << "color: " << color;
}

void MyWidget::on_pushButton_6_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QStringList fileNames = QFileDialog::getOpenFileNames(this, tr("文件对话框"), "F:", tr("图片文件(* png * jpg);;文本文件(* txt)"));
qDebug() << "filenames:" << fileNames;
}

void MyWidget::on_pushButton_2_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
bool ok;
QFont font = QFontDialog::getFont(&ok, this);
if (ok) ui->pushButton_2->setFont(font);
else qDebug() << tr("没有选择字体！");

}

void MyWidget::on_pushButton_7_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
bool ok;
QString string = QInputDialog::getText(this, tr("输入字符串对话框"), tr("请输入用户名: "),QLineEdit::Normal,tr("admin"), &ok);
if (ok) qDebug() << "string:" << string;
int value1 = QInputDialog::getInt(this, tr("输入整数对话框"), tr("请输入－１０００到１０００之间的数值"), 100, -1000, 1000, 10, &ok);
if (ok) qDebug() << "value1:" << value1;
double value2 = QInputDialog::getDouble(this, tr("输入浮点数对话框"), tr("请输入-1000到1000之间的数值"), 0.00, -1000, 1000, 2, &ok);
if (ok) qDebug() << "value2:" << value2;
QStringList items;
items << tr("条目１") << tr("条目２");
QString item = QInputDialog::getItem(this, tr("输入条目对话框"), tr("请输入一个条目"), items, 0, true, &ok);
if(ok) qDebug() << "item:" << item;

}

void MyWidget::on_pushButton_3_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
int ret1 = QMessageBox::question(this, tr("问题对话框"), tr("你了解Ｑt吗？"), QMessageBox::Yes, QMessageBox::No);
if (ret1 == QMessageBox::Yes) qDebug() << tr("问题!");

int ret2 = QMessageBox::information(this, tr("提示对话框"), tr("这是Ｑｔ书籍!"), QMessageBox::Ok);
if (ret2 == QMessageBox::Ok) qDebug() << tr("提示！");

//警告对话框
int ret3 = QMessageBox::warning(this, tr("警告对话框"),
tr("不能提前结束！"), QMessageBox::Abort);
if (ret3 == QMessageBox::Abort) qDebug() << tr("警告!");

//错误对话框
int ret4 = QMessageBox::critical(this, tr("严重错误对话框"),
tr("发现一个严重错误！现在要关闭所有文件！"), QMessageBox::YesAll);
if (ret4 == QMessageBox::YesAll) qDebug() << tr("错误！");

//关于对话框
QMessageBox::about(this, tr("关于对话框"), tr("yafeilinux.com致力于Ｑｔ及Ｑｔ　Ｃｒｅａｔｏｒ的普及工作！"));
}

void MyWidget::on_pushButton_8_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QProgressDialog dialog(tr("文件复制进度"), tr("取消"), 0, 50000, this);
dialog.setWindowTitle(tr("进度对话框"));
dialog.setWindowModality(Qt::WindowModal);
dialog.show();
for (int i = 0; i < 50000; i++){
dialog.setValue(i);
QApplication::processEvents();
if (dialog.wasCanceled()) break;
}

dialog.setValue(50000);
qDebug() << tr("复制结束！");

}

void MyWidget::on_pushButton_4_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QErrorMessage *dialog = new QErrorMessage(this);
dialog->setWindowTitle(tr("错误信息对话框"));
dialog->showMessage(tr("这里是出错信息！"));

}

QWizardPage * MyWidget::createpage1()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QWizardPage * page = new QWizardPage;
page->setTitle(tr("介绍"));
return page;
}
QWizardPage * MyWidget::createpage2()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QWizardPage * page = new QWizardPage;
page->setTitle(tr("用户选择信息"));
return page;
}
QWizardPage * MyWidget::createpage3()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QWizardPage * page = new QWizardPage;
page->setTitle(tr("结束"));
return page;
}
void MyWidget::on_pushButton_5_clicked()
{
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QWizard wizard(this);
wizard.setWindowTitle(tr("向导对话框"));
wizard.addPage(createpage1());
wizard.addPage(createpage2());
wizard.addPage(createpage3());
wizard.exec();
}