布局管理

QHBoxLayout       水平

QVBoxLayout　　垂直

QGidLayout　　二维单元格

QStackedLayout     分页     

#ifndef PREFERENCEDIALOG_H
#define PREFERENCEDIALOG_H

#include <QDialog>

class QCheckBox;
class QDialogButtonBox;
class QGroupBox;
class QLabel;
class QLineEdit;
class QListWidget;
class QRadioButton;
class QStackedLayout;

class PreferenceDialog : public QDialog
{
    Q_OBJECT

public:
    PreferenceDialog(QWidget *parent = 0);

private:
    void createAppearancePage();
    void createWebBrowserPage();
    void createMailAndNewsPage();
    void createAdvancedPage();

    QStackedLayout *stackedLayout;
    QListWidget *listWidget;
    QWidget *appearancePage;
    QWidget *webBrowserPage;
    QWidget *mailAndNewsPage;
    QWidget *advancedPage;
    QDialogButtonBox *buttonBox;

    QGroupBox *openGroupBox;
    QCheckBox *webBrowserCheckBox;
    QCheckBox *mailEditorCheckBox;
    QCheckBox *newsgroupCheckBox;
    QGroupBox *toolbarsGroupBox;
    QRadioButton *picturesAndTextRadioButton;
    QRadioButton *picturesOnlyRadioButton;
    QRadioButton *textOnlyRadioButton;
    QCheckBox *tooltipsCheckBox;
    QCheckBox *webSiteIconsCheckBox;
    QCheckBox *resizeImagesCheckBox;

    QGroupBox *displayGroupBox;
    QRadioButton *blankRadioButton;
    QRadioButton *homeRadioButton;
    QRadioButton *lastRadioButton;
    QGroupBox *homeGroupBox;
    QLabel *locationLabel;
    QLineEdit *locationLineEdit;
    QGroupBox *webButtonsGroupBox;
    QCheckBox *bookmarksCheckBox;
    QCheckBox *goCheckBox;
    QCheckBox *homeCheckBox;
    QCheckBox *searchCheckBox;
    QCheckBox *printCheckBox;

    QGroupBox *generalGroupBox;
    QCheckBox *confirmCheckBox;
    QCheckBox *rememberCheckBox;
    QGroupBox *mailButtonsGroupBox;
    QCheckBox *fileCheckBox;
    QCheckBox *nextCheckBox;
    QCheckBox *stopCheckBox;
    QCheckBox *junkCheckBox;

    QGroupBox *featuresGroupBox;
    QCheckBox *javaCheckBox;
    QCheckBox *ftpCheckBox;
    QLineEdit *ftpLineEdit;
};

#endif

#include <QtGui>

#include "preferencedialog.h"

PreferenceDialog::PreferenceDialog(QWidget *parent)
    : QDialog(parent)
{
    createAppearancePage();
    createWebBrowserPage();
    createMailAndNewsPage();
    createAdvancedPage();

    buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok
                                     | QDialogButtonBox::Cancel);

    listWidget = new QListWidget;
    listWidget->addItem(tr("Appearance"));
    listWidget->addItem(tr("Web Browser"));
    listWidget->addItem(tr("Mail & News"));
    listWidget->addItem(tr("Advanced"));

    stackedLayout = new QStackedLayout;
    stackedLayout->addWidget(appearancePage);
    stackedLayout->addWidget(webBrowserPage);
    stackedLayout->addWidget(mailAndNewsPage);
    stackedLayout->addWidget(advancedPage);
    connect(listWidget, SIGNAL(currentRowChanged(int)),
            stackedLayout, SLOT(setCurrentIndex(int)));

    QGridLayout *mainLayout = new QGridLayout;
    mainLayout->setColumnStretch(0, 1);
    mainLayout->setColumnStretch(1, 3);
    mainLayout->addWidget(listWidget, 0, 0);
    mainLayout->addLayout(stackedLayout, 0, 1);
    mainLayout->addWidget(buttonBox, 1, 0, 1, 2);
    setLayout(mainLayout);

    connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

    setWindowTitle(tr("Preferences"));
    listWidget->setCurrentRow(0);
}

void PreferenceDialog::createAppearancePage()
{
    appearancePage = new QWidget;

    openGroupBox = new QGroupBox(tr("Open at startup"));
    webBrowserCheckBox = new QCheckBox(tr("Web browser"));
    mailEditorCheckBox = new QCheckBox(tr("Mail editor"));
    newsgroupCheckBox = new QCheckBox(tr("Newsgroups"));

    toolbarsGroupBox = new QGroupBox(tr("Show toolbars as"));
    picturesAndTextRadioButton = new QRadioButton(tr("Pictures and "
                                                     "text"));
    picturesOnlyRadioButton = new QRadioButton(tr("Pictures only"));
    textOnlyRadioButton = new QRadioButton(tr("Text only"));

    tooltipsCheckBox = new QCheckBox(tr("Show tooltips"));
    webSiteIconsCheckBox = new QCheckBox(tr("Show web site icons"));
    resizeImagesCheckBox = new QCheckBox(tr("Resize large images to "
                                            "fit in the window"));

    QVBoxLayout *openLayout = new QVBoxLayout;
    openLayout->addWidget(webBrowserCheckBox);
    openLayout->addWidget(mailEditorCheckBox);
    openLayout->addWidget(newsgroupCheckBox);
    openGroupBox->setLayout(openLayout);

    QVBoxLayout *toolbarsLayout = new QVBoxLayout;
    toolbarsLayout->addWidget(picturesAndTextRadioButton);
    toolbarsLayout->addWidget(picturesOnlyRadioButton);
    toolbarsLayout->addWidget(textOnlyRadioButton);
    toolbarsGroupBox->setLayout(toolbarsLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(openGroupBox);
    pageLayout->addWidget(toolbarsGroupBox);
    pageLayout->addWidget(tooltipsCheckBox);
    pageLayout->addWidget(webSiteIconsCheckBox);
    pageLayout->addWidget(resizeImagesCheckBox);
    pageLayout->addStretch();
    appearancePage->setLayout(pageLayout);

    webBrowserCheckBox->setChecked(true);
    mailEditorCheckBox->setChecked(true);
    picturesAndTextRadioButton->setChecked(true);
    tooltipsCheckBox->setChecked(true);
    webSiteIconsCheckBox->setChecked(true);
}

void PreferenceDialog::createWebBrowserPage()
{
    webBrowserPage = new QWidget;

    displayGroupBox = new QGroupBox(tr("Display on startup"));
    blankRadioButton = new QRadioButton(tr("Blank page"));
    homeRadioButton = new QRadioButton(tr("Blank page"));
    lastRadioButton = new QRadioButton(tr("Last page visited"));

    homeGroupBox = new QGroupBox(tr("Home Page"));
    locationLabel = new QLabel(tr("Location:"));
    locationLineEdit = new QLineEdit;

    webButtonsGroupBox = new QGroupBox(tr("Select the buttons you want "
                                          "in the toolbar"));
    bookmarksCheckBox = new QCheckBox(tr("Bookmarks"));
    goCheckBox = new QCheckBox(tr("Go"));
    homeCheckBox = new QCheckBox(tr("Home"));
    searchCheckBox = new QCheckBox(tr("Search"));
    printCheckBox = new QCheckBox(tr("Print"));

    QVBoxLayout *displayLayout = new QVBoxLayout;
    displayLayout->addWidget(blankRadioButton);
    displayLayout->addWidget(homeRadioButton);
    displayLayout->addWidget(lastRadioButton);
    displayGroupBox->setLayout(displayLayout);

    QHBoxLayout *homeLayout = new QHBoxLayout;
    homeLayout->addWidget(locationLabel);
    homeLayout->addWidget(locationLineEdit);
    homeGroupBox->setLayout(homeLayout);

    QGridLayout *webButtonsLayout = new QGridLayout;
    webButtonsLayout->addWidget(bookmarksCheckBox, 0, 0);
    webButtonsLayout->addWidget(goCheckBox, 1, 0);
    webButtonsLayout->addWidget(homeCheckBox, 2, 0);
    webButtonsLayout->addWidget(searchCheckBox, 0, 1);
    webButtonsLayout->addWidget(printCheckBox, 1, 1);
    webButtonsGroupBox->setLayout(webButtonsLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(displayGroupBox);
    pageLayout->addWidget(homeGroupBox);
    pageLayout->addWidget(webButtonsGroupBox);
    pageLayout->addStretch();
    webBrowserPage->setLayout(pageLayout);

    homeRadioButton->setChecked(true);
    locationLineEdit->setText("http://www.trolltech.com/");
    bookmarksCheckBox->setChecked(true);
    homeCheckBox->setChecked(true);
    searchCheckBox->setChecked(true);
    printCheckBox->setChecked(true);
}

void PreferenceDialog::createMailAndNewsPage()
{
    mailAndNewsPage = new QWidget;

    generalGroupBox = new QGroupBox(tr("General settings"));
    confirmCheckBox = new QCheckBox(tr("Warn when moving folders to "
                                       "the Trash"));
    rememberCheckBox = new QCheckBox(tr("Remember the last selected "
                                        "message"));

    mailButtonsGroupBox = new QGroupBox(tr("Select the buttons you "
                                           "want in the toolbar"));
    fileCheckBox = new QCheckBox(tr("File"));
    nextCheckBox = new QCheckBox(tr("Next"));
    stopCheckBox = new QCheckBox(tr("Stop"));
    junkCheckBox = new QCheckBox(tr("Junk"));

    QVBoxLayout *generalLayout = new QVBoxLayout;
    generalLayout->addWidget(confirmCheckBox);
    generalLayout->addWidget(rememberCheckBox);
    generalGroupBox->setLayout(generalLayout);

    QGridLayout *mailButtonsLayout = new QGridLayout;
    mailButtonsLayout->addWidget(fileCheckBox, 0, 0);
    mailButtonsLayout->addWidget(nextCheckBox, 1, 0);
    mailButtonsLayout->addWidget(stopCheckBox, 0, 1);
    mailButtonsLayout->addWidget(junkCheckBox, 1, 1);
    mailButtonsGroupBox->setLayout(mailButtonsLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(generalGroupBox);
    pageLayout->addWidget(mailButtonsGroupBox);
    pageLayout->addStretch();
    mailAndNewsPage->setLayout(pageLayout);

    confirmCheckBox->setChecked(true);
    rememberCheckBox->setChecked(true);
    nextCheckBox->setChecked(true);
    junkCheckBox->setChecked(true);
}

void PreferenceDialog::createAdvancedPage()
{
    advancedPage = new QWidget;

    featuresGroupBox = new QGroupBox(tr("Features that help "
                                        "interpret web pages"));
    javaCheckBox = new QCheckBox(tr("Enable Java"));
    ftpCheckBox = new QCheckBox(tr("Use this email address for "
                                   "anonymous FTP:"));
    ftpLineEdit = new QLineEdit;

    connect(ftpCheckBox, SIGNAL(toggled(bool)),
            ftpLineEdit, SLOT(setEnabled(bool)));

    QGridLayout *featuresLayout = new QGridLayout;
    featuresLayout->addWidget(javaCheckBox, 0, 0, 1, 2);
    featuresLayout->addWidget(ftpCheckBox, 1, 0, 1, 2);
    featuresLayout->addWidget(ftpLineEdit, 2, 1);
    featuresGroupBox->setLayout(featuresLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(featuresGroupBox);
    pageLayout->addStretch();
    advancedPage->setLayout(pageLayout);

    javaCheckBox->setChecked(true);
    ftpLineEdit->setEnabled(false);
}

   

QSplitter  切分

#include <QtGui>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QTextEdit *editor1 = new QTextEdit;
    QTextEdit *editor2 = new QTextEdit;
    QTextEdit *editor3 = new QTextEdit;

    QSplitter splitter(Qt::Horizontal);
    splitter.addWidget(editor1);
    splitter.addWidget(editor2);
    splitter.addWidget(editor3);

    editor1->setPlainText("Mon enfant, ma soeur,\n"
                          "Songe  la douceur\n"
                          "D'aller l-bas vivre ensemble,\n"
                          "Aimer  loisir,\n"
                          "Aimer et mourir\n"
                          "Au pays qui te ressemble.");
    editor2->setPlainText("My child, my sister,\n"
                          "think of the sweetness\n"
                          "of going there to live together!\n"
                          "To love at leisure,\n"
                          "to love and to die\n"
                          "in a country that is the image of you!");
    editor3->setPlainText("Mein Kind, meine Schwester,\n"
                          "denke an den Traum\n"
                          "dort hin(unter) zu gehen um zusammen\n"
                          "zu leben und in aller Ruhe zu lieben,\n"
                          "Zu lieben und zu sterben\n"
                          "in dem Land, das dir gleicht.");

    splitter.setWindowTitle(QObject::tr("Splitter"));
    splitter.show();
    return app.exec();
}

QScrollArea  滚动

QMainWindow

QMdiQArea

 

附加小知识：

1：三种布局的方法，绝对位置法，人工布局法和布局管理器

2：对话框周围的边白 QLayout::setContentsMargins()

3：俩个子窗口部件之间的间隔 QLayout::setSpacing()

4：QGridLayout::addWidget(widget, row, column, rowSpan, columnSpan)

                                                           行       列          占行数        占列数

5：addStretch() 占满布局中这一处的空间

6：停靠窗口 QDockWidget