Qt 4.6.1 is a bug-fix release. It maintains both forward and backward compatibility (source and binary) with Qt 4.6.0. For more details, refer to the online documentation included in this distribution. The documentation is also available online: http://qt.nokia.com/doc/4.6 The Qt version 4.6 series is binary compatible with the 4.5.x series. Applications compiled for 4.5 will continue to run with 4.6. Some of the changes listed in this file include issue tracking numbers corresponding to tasks in the Qt Bug Tracker, the (now obsolete) Task Tracker, or the Merge Request queue of the public source repository. Qt Bug Tracker: http://bugreports.qt.nokia.com Task Tracker: http://qt.nokia.com/developer/task-tracker Merge Request: http://qt.gitorious.org **************************************************************************** * General * **************************************************************************** New features ------------ - SomeClass, SomeOtherClass * New classes for foo, bar and baz Optimizations ------------- - Optimized foo in QSomeClass * See list of Important Behavior Changes below **************************************************************************** * Library * **************************************************************************** QtCore ------ - foo * bar QtGui ----- - QApplication * [QTBUG-6654] Fix crashes when deleting QWidgets in touch event handlers. - QPixmap * load() and loadFromData() can now support compressed GL textures in the DDS, ETC1, PVRTC2, and PVRTC4 formats if the OpenGL graphics system is active and the appropriate extensions are present in the GL implementation. - QGraphicsObject * 'id' property was removed. Use the 'objectName' property instead. - QGraphicsScene * [QTBUG-6654] Fix crashes when deleting QGraphicsItems in touch event handlers. QtDBus ------ - foo * bar QtNetwork --------- - foo * bar QtOpenGL -------- - QGLContext * bindTexture(QString) now supports DDS, ETC1, PVRTC2, and PVRTC4 compressed textures if the appropriate extensions are present in the GL implementation. * bindTexture(QImage): Reduce double-copying of textures when flipping. * [QTBUG-6454] Better EGL extension checking to avoid prefix problems with EGL_foo matching EGL_foo_bar. * [QTBUG-6217] Work around problems with glColor4ub() on Intel Q45/Q43 Express by consistently using glColor4f() everywhere. * bindTexture(QImage): Fix GL_BGRA formats under OpenGL/ES by using the same value for both internal and external texture formats. * [QTBUG-5041] Disable depth testing while in renderText(). - QGLPaintDevice * [QTBUG-6204] Rebind window surface fbo after native GL rendering. - QGLEngineSelector * [QTBUG-5638] Detect GL2 based on fragment shaders, not programs. Fragment programs are a GL1 feature. - QGLFramebufferObject * [QTBUG-6712] Update docs to better explain how QPainter changes the GL state when used on an FBO. - QGLPixmapData * [QTBUG-6902] Align GL_RGB data on a 4-byte line boundary. - QTriangulatingStroker * [QTBUG-6045] Crash in dashed line handling in the GL stroker. - QGLGlyphCache * [QTBUG-6936] Fix memory leak of QGLGlyphCoord objects. QtOpenVG -------- - [QT-2555] Automatically destroy VG pixmaps when the last window surface goes away to reduce memory consumption of backgrounded applications. - [QTBUG-6639] Recover from out-of-memory when creating VGImage's. - [QT-2554] Add a VGImage allocation pool to support reclaiming older images when the GPU runs out of memory. - [QTBUG-7051] Reset the OpenVG scissor after a native painting call-out. - [QTBUG-7015] Avoid deep copies of QImage in QImage::bits() calls. QtScript -------- - foo * bar QtSql ----- - foo * bar QtXml ----- - foo * bar Qt Plugins ---------- - JPEG plugin * Remove obsolete parameter string handling. * [QT-2023] Re-implement ScaledSize, ClipRect, ScaledClipRect with libjpeg features for greater performance. - PBM plugin * [QTBUG-6937] Use Mono instead of MonoLSB when writing pbm files. - TIFF plugin * [QTBUG-6870] BitsPerSample should default to 1 in TIFF files. - PNG plugin * [QTBUG-7161] Avoid a deep copy of QImage::bits() in the png writer. Third party components ---------------------- - Updated foo to version 2.3.9. - Updated bar to the latest version from baz.org. **************************************************************************** * Platform Specific Changes * **************************************************************************** Qt for Unix (X11 and Mac OS X) ------------------------------ - Qt for Linux/X11 ---------------- - QGuiEventDispatcherGlib (internal class) * Fix regression introduced in 4.6.0 that could cause X11 event processing to starve timer events. - QFileSystemWatcher * [QTBUG-4840] Fix memory leak in the dnotify implementation. Qt for Windows -------------- - QAtomicPointer * [QTBUG-6079] Fix compilation for 64-bit Windows targets. - QEventDispatchWin32 (internal class) * [QTBUG-6083] Fix a performance regression introduced in 4.6.0 that would cause all Qt posted events to be sent at 15-16ms intervals (instead of as quickly as possible). Qt for Mac OS X --------------- - Qt for Embedded Linux --------------------- - DirectFB -------- - Qt for Windows CE ----------------- - Qt for Symbian -------------- - QApplication * [QTBUG-6098] Added a flag to avoid construction of application panes. - Other: * [QTBUG-4990] Rewrote most of the regular pointer handling. **************************************************************************** * Tools * **************************************************************************** - Designer * [QTBUG-6863] Fixed static linking on Mac. * [QTBUG-6760] Fixed display of action shortcut in action editor. * [QTBUG-6505] Fixed handling of QHeaderView properties. * [QTBUG-5335] Fixed handling of layout margins of custom containers. - uic * [QTBUG-5824] Fixed code generation to generate a call to QMainWindow::setCentralWidget() for promoted widgets as well. - qdoc3 * bar - Linguist * baz **************************************************************************** * Important Behavior Changes * **************************************************************************** -