These documents describe platform-specific features provided by Qt, and discuss issues related to particular platforms and environments.
ActiveX in Qt
Qt API's for using ActiveX controls, servers, and COM.
Calling Qt Functions From Unix Signal Handlers
You can't. But don't despair, there is a way...
Compiler Notes
Information about the C++ compilers and tools used to build Qt.
Developing Qt Applications for Mac OS X
Information for developing Qt applications for Mac OS X
Known Issues
Links to online resources stating known issues in this Qt version at the time of release.
Platform and Compiler Notes
Information about the platforms on which Qt can be used.
Platform and Compiler Notes - Symbian
Information about the state of support for the Symbian platform.
Qt for Embedded Linux Classes
Classes that are specific to Qt for Embedded Linux.
Qt for Embedded Platforms
Documents related to Qt for Embedded Platforms.
Qt for Mac OS X - Specific Issues
A description of issues with Qt that are specific to Mac OS X.
Qt is Mac OS X Native
An explanation of Qt's native features on Mac OS X.
Support for Linux/X11
Platform support for Linux/X11.
Support for Mac OS X
Platform support for Mac OS X.
Support for Windows
Platform support for Windows.
Supported Platforms
The platforms supported by Nokia for Qt.
The qtmain Library
Describes the use and license of the qtmain helper library.
Window System Specific Notes
Collections of notes about Qt implementations on different window systems.