diff options
Diffstat (limited to 'doc')
-rw-r--r-- | doc/src/snippets/code/src_gui_image_qicon.cpp | 4 | ||||
-rw-r--r-- | doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp | 9 | ||||
-rw-r--r-- | doc/src/snippets/qelapsedtimer/main.cpp | 112 | ||||
-rw-r--r-- | doc/src/snippets/qelapsedtimer/qelapsedtimer.pro | 2 | ||||
-rw-r--r-- | doc/src/sql-programming/sql-driver.qdoc | 67 |
5 files changed, 192 insertions, 2 deletions
diff --git a/doc/src/snippets/code/src_gui_image_qicon.cpp b/doc/src/snippets/code/src_gui_image_qicon.cpp index df1fa82..e0dcfa6 100644 --- a/doc/src/snippets/code/src_gui_image_qicon.cpp +++ b/doc/src/snippets/code/src_gui_image_qicon.cpp @@ -56,8 +56,8 @@ void MyWidget::drawIcon(QPainter *painter, QPoint pos) QPixmap pixmap = icon.pixmap(QSize(22, 22), isEnabled() ? QIcon::Normal : QIcon::Disabled, - isOn() ? QIcon::On - : QIcon::Off); + isChecked() ? QIcon::On + : QIcon::Off); painter->drawPixmap(pos, pixmap); } //! [2] diff --git a/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp b/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp index 5db6676..1853650 100644 --- a/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp +++ b/doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp @@ -69,3 +69,12 @@ networkAccessManager->setConfiguration(manager.defaultConfiguration()); //! [3] networkAccessManager->setConfiguration(QNetworkConfiguration()); //! [3] + +//! [4] +networkAccessManager->setNetworkAccessible(QNetworkAccessManager::NotAccessible); +//! [4] + +//! [5] +networkAccessManager->setNetworkAccessible(QNetworkAccessManager::Accessible); +//! [5] + diff --git a/doc/src/snippets/qelapsedtimer/main.cpp b/doc/src/snippets/qelapsedtimer/main.cpp new file mode 100644 index 0000000..9d0421f --- /dev/null +++ b/doc/src/snippets/qelapsedtimer/main.cpp @@ -0,0 +1,112 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtNetwork module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include <QtCore> + +void slowOperation1() +{ + static char buf[256]; + for (int i = 0; i < (1<<20); ++i) + buf[i % sizeof buf] = i; +} + +void slowOperation2(int) { slowOperation1(); } + +void startExample() +{ +//![0] + QElapsedTimer timer; + timer.start(); + + slowOperation1(); + + qDebug() << "The slow operation took" << timer.elapsed() << "milliseconds"; +//![0] +} + +//![1] +void executeSlowOperations(int timeout) +{ + QElapsedTimer timer; + timer.start(); + slowOperation1(); + + int remainingTime = timeout - timer.elapsed(); + if (remainingTime > 0) + slowOperation2(remainingTime); +} +//![1] + +//![2] +void executeOperationsForTime(int ms) +{ + QElapsedTimer timer; + timer.start(); + + while (!timer.hasExpired(ms)) + slowOperation1(); +} +//![2] + +int restartExample() +{ +//![3] + QElapsedTimer timer; + + int count = 1; + timer.start(); + do { + count *= 2; + slowOperation2(count); + } while (timer.restart() < 250); + + return count; +//![3] +} + +int main(int argc, char **argv) +{ + QCoreApplication app(argc, argv); + + startExample(); + restartExample(); + executeSlowOperations(5); + executeOperationsForTime(5); +} diff --git a/doc/src/snippets/qelapsedtimer/qelapsedtimer.pro b/doc/src/snippets/qelapsedtimer/qelapsedtimer.pro new file mode 100644 index 0000000..b0a8f66 --- /dev/null +++ b/doc/src/snippets/qelapsedtimer/qelapsedtimer.pro @@ -0,0 +1,2 @@ +SOURCES = main.cpp +QT -= gui diff --git a/doc/src/sql-programming/sql-driver.qdoc b/doc/src/sql-programming/sql-driver.qdoc index e26472e..6bccd83 100644 --- a/doc/src/sql-programming/sql-driver.qdoc +++ b/doc/src/sql-programming/sql-driver.qdoc @@ -192,6 +192,73 @@ built in release mode only. If you are expecting a debug version to be built as well, don't use the \c{"-o Makefile"} option. + \section3 How to build the MySQL driver for MinGW users + + The following steps have been used successfully for WinXP SP3. In + this example, Qt 4.6.2 is shown. + + \list + + \o Download the following components: + \list + \o \c{MinGW-5.1.6.exe} + \o \c{mingw-utils-0.3.tar.gz} + \o Qt sources, e.g. \c{qt-everywhere-opensource-src-4.6.2.zip} + \o \c{mysql-5.1.35-win32.msi} + \endlist + + \o Install \c{MinGW-5.1.6.exe} in, e.g. \c{C:\MinGW}. + + \o Extract \c{mingw-utils-0.3.tar.gz} into, e.g. \c{C:\MinGW}. + + \o Add the path for \c{MinGW-5.1.6.exe} to your \c{PATH} variable, + e.g. \c{C:\MinGW\bin;} + + \o Extract the Qt sources, (\c{qt-everywhere-opensource-src-4.6.2.zip}), + into, e.g. \c{C:\Qt}. + + \o Add the path for the eventual Qt binary to your \c{PATH} variable, + e.g. \c{C:\Qt\4.6.2\bin;}. + + \o Install MySQL (\c{mysql-5.1.35-win32.msi}), customizing the + components. Select only the headers and libraries. Install in, + e.g. \c{C:\MySQL\MySQL51}. + + \o Open the DOS prompt, go to \c{C:\MySQL\MySQL51\lib\opt}, and run + the following commands: + \list + \o \c{reimp -d libmysql.lib} + \o \c{dlltool -k -d libmysql.def -l libmysql.a} + \endlist + + \o Open the DOS prompt, go to \c{C:\Qt\4.6.2} and run the following commands: + \list + \o \c{configure.exe -debug-and-release -platform win32-g++ -qt-sql-mysql + -l mysql -I C:\MySQL\MySQL51\include -L C:\MySQL\MySQL51\lib\opt} + \o \c{mingw32-make sub-src} + \endlist + This step takes a long time. + + \o Open the DOS prompt, go to + \c{C:\Qt\4.6.2\src\plugins\sqldrivers\mysql} and run the + following command: + \list + \o \c{qmake "INCLUDEPATH+=C:\MySQL\MySQL51\include" "LIBS+=-L. mysql" mysql.pro} + \endlist + + \o Now the following libraries are ready in \c{C:\Qt\4.6.2\plugins\sqldrivers}. + \list + \o \c{libqsqlmysql4.a} + \o \c{libqsqlmysqld4.a} + \o \c{qsqlmysql4.dll} + \o \c{qsqlmysqld4.dll} + \endlist + To use the SDK and QtCreator directly, copy these libraries to + your \c{C:\Qt\...\qt\plugins\sqldrivers\}, and copy + \c{C:\MySQL\MySQL51\lib\opt\libmysql.dll} to your \c{C:\Qt\...\qt\bin\}. + + \endlist + \target QOCI \section2 QOCI for the Oracle Call Interface (OCI) |