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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /doc/src/snippets/dialogs
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
Diffstat (limited to 'doc/src/snippets/dialogs')
-rw-r--r--doc/src/snippets/dialogs/dialogs.cpp268
1 files changed, 268 insertions, 0 deletions
diff --git a/doc/src/snippets/dialogs/dialogs.cpp b/doc/src/snippets/dialogs/dialogs.cpp
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+++ b/doc/src/snippets/dialogs/dialogs.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+typedef QDialog WordCountDialog;
+typedef QDialog FindDialog;
+
+#define this 0
+#define setWordCount(x) isVisible()
+
+QString tr(const char *text)
+{
+ return QApplication::translate(text, text);
+}
+
+class EditorWindow : public QMainWindow
+{
+public:
+ void find();
+ void countWords();
+
+private:
+ FindDialog *findDialog;
+};
+
+//! [0]
+void EditorWindow::find()
+{
+ if (!findDialog) {
+ findDialog = new FindDialog(this);
+ connect(findDialog, SIGNAL(findNext()), this, SLOT(findNext()));
+ }
+
+ findDialog->show();
+ findDialog->raise();
+ findDialog->activateWindow();
+}
+//! [0]
+
+//! [1]
+void EditorWindow::countWords()
+{
+ WordCountDialog dialog(this);
+ dialog.setWordCount(document().wordCount());
+ dialog.exec();
+}
+//! [1]
+
+inline bool boo()
+{
+ QMessageBox::information(this, "Application name",
+ "Unable to find the user preferences file.\n"
+ "The factory default will be used instead.");
+
+ QString filename;
+ if (QFile::exists(filename) &&
+ QMessageBox::question(
+ this,
+ tr("Overwrite File? -- Application Name"),
+ tr("A file called %1 already exists."
+ "Do you want to overwrite it?")
+ .arg(filename),
+ tr("&Yes"), tr("&No"),
+ QString(), 0, 1))
+ return false;
+
+ switch(QMessageBox::warning(this, "Application name",
+ "Could not connect to the <mumble> server.\n"
+ "This program can't function correctly "
+ "without the server.\n\n",
+ "Retry",
+ "Quit", 0, 0, 1)) {
+ case 0: // The user clicked the Retry again button or pressed Enter
+ // try again
+ break;
+ case 1: // The user clicked the Quit or pressed Escape
+ // exit
+ break;
+ }
+
+ switch(QMessageBox::information(this, "Application name here",
+ "The document contains unsaved changes\n"
+ "Do you want to save the changes before exiting?",
+ "&Save", "&Discard", "Cancel",
+ 0, // Enter == button 0
+ 2)) { // Escape == button 2
+ case 0: // Save clicked or Alt+S pressed or Enter pressed.
+ // save
+ break;
+ case 1: // Discard clicked or Alt+D pressed
+ // don't save but exit
+ break;
+ case 2: // Cancel clicked or Escape pressed
+ // don't exit
+ break;
+ }
+
+ switch(QMessageBox::warning(this, "Application name here",
+ "Could not save the user preferences,\n"
+ "because the disk is full. You can delete\n"
+ "some files and press Retry, or you can\n"
+ "abort the Save Preferences operation.",
+ QMessageBox::Retry | QMessageBox::Default,
+ QMessageBox::Abort | QMessageBox::Escape)) {
+ case QMessageBox::Retry: // Retry clicked or Enter pressed
+ // try again
+ break;
+ case QMessageBox::Abort: // Abort clicked or Escape pressed
+ // abort
+ break;
+ }
+
+ QString errorDetails;
+ QMessageBox::critical(0, "Application name here",
+ QString("An internal error occurred. Please ") +
+ "call technical support at 1234-56789 and report\n"+
+ "these numbers:\n\n" + errorDetails +
+ "\n\nApplication will now exit.");
+
+ QMessageBox::about(this, "About <Application>",
+ "<Application> is a <one-paragraph blurb>\n\n"
+ "Copyright 1991-2003 Such-and-such. "
+ "<License words here.>\n\n"
+ "For technical support, call 1234-56789 or see\n"
+ "http://www.such-and-such.com/Application/\n");
+
+ {
+ // saving the file
+ QMessageBox mb("Application name here",
+ "Saving the file will overwrite the original file on the disk.\n"
+ "Do you really want to save?",
+ QMessageBox::Information,
+ QMessageBox::Yes | QMessageBox::Default,
+ QMessageBox::No,
+ QMessageBox::Cancel | QMessageBox::Escape);
+ mb.setButtonText(QMessageBox::Yes, "Save");
+ mb.setButtonText(QMessageBox::No, "Discard");
+ switch(mb.exec()) {
+ case QMessageBox::Yes:
+ // save and exit
+ break;
+ case QMessageBox::No:
+ // exit without saving
+ break;
+ case QMessageBox::Cancel:
+ // don't save and don't exit
+ break;
+ }
+ }
+
+ {
+ // hardware failure
+//! [2]
+ QMessageBox mb("Application Name",
+ "Hardware failure.\n\nDisk error detected\nDo you want to stop?",
+ QMessageBox::Question,
+ QMessageBox::Yes | QMessageBox::Default,
+ QMessageBox::No | QMessageBox::Escape,
+ QMessageBox::NoButton);
+ if (mb.exec() == QMessageBox::No) {
+ // try again
+//! [2]
+ }
+ }
+}
+
+inline void moo()
+{
+ int numFiles;
+//! [3]
+ QProgressDialog progress("Copying files...", "Abort Copy", 0, numFiles, this);
+ progress.setWindowModality(Qt::WindowModal);
+
+ for (int i = 0; i < numFiles; i++) {
+ progress.setValue(i);
+
+ if (progress.wasCanceled())
+ break;
+ //... copy one file
+ }
+ progress.setValue(numFiles);
+//! [3]
+}
+
+class Operation : public QObject
+{
+public:
+ Operation(QObject *parent);
+ void perform();
+ void cancel();
+
+private:
+ int steps;
+ QProgressDialog *pd;
+ QTimer *t;
+};
+
+//! [4]
+// Operation constructor
+Operation::Operation(QObject *parent)
+ : QObject(parent), steps(0)
+{
+ pd = new QProgressDialog("Operation in progress.", "Cancel", 0, 100);
+ connect(pd, SIGNAL(canceled()), this, SLOT(cancel()));
+ t = new QTimer(this);
+ connect(t, SIGNAL(timeout()), this, SLOT(perform()));
+ t->start(0);
+}
+//! [4] //! [5]
+
+void Operation::perform()
+{
+ pd->setValue(steps);
+ //... perform one percent of the operation
+ steps++;
+ if (steps > pd->maximum())
+ t->stop();
+}
+//! [5] //! [6]
+
+void Operation::cancel()
+{
+ t->stop();
+ //... cleanup
+}
+//! [6]
+
+int main()
+{
+}