Question

Qt is a multiplatform GUI toolkit, so almost the entire API is the
same on all platforms and window systems. If you wish to use
platform-specific features, and still maintain a platform-independent
source tree, you should protect the platform-specific code using the
appropriate #ifdef statements (see below).

For information about which platforms are supported by Qt, see the
Platform
Notes.

Qt/X11

When compiling for this platform, the macro Q_WS_X11 is defined.

Not documented here. Please contact Trolltech Technical Support if you have queries.

Qt/Windows

When compiling for this platform, the macro Q_WS_WIN is defined.

Not documented here. Please contact Trolltech Technical Support if you have queries.

Qt/MacOSX

When compiling for this platform, the macro Q_WS_MACX is defined.

Not documented here. Please contact Trolltech Technical Support if you have queries.

Qt/Embedded

When compiling for this platform, the macro Q_WS_QWS is defined
(the window system is literally the Qt Window System).

• Installation
• Qt/Embedded performance tuning
• Running Qt/Embedded applications
• Porting your applications to Qt/Embedded
• Font formats and definitions
• Character input (keyboard, pen, ...)
• Pointer handling (mouse, pen, ...)
• Reduce memory use with the feature definition file
• A case study embedding on Cassiopeia