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Window System Specific Notes

Qt is a cross-platform 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 directives (see below).

Qt provides a few low-level global functions for fine-tuning applications on specific platforms. See Special-Purpose Global Functions Exported by Qt for details.

For information about which platforms are supported by Qt, see the Platform Notes. For information on distributing Qt applications, see Deploying Qt Applications.

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/X11 Dependencies

Note: You must compile with both Xft and XRender support to get alpha transparency support for pixmaps and images. Configuring with XRender support alone is not enough.

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/Mac OS X

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

Qtopia Core (Qt for Embedded Linux)

When compiling for this platform, the macro Q_WS_QWS is defined (the window system is literally the Qt Window System). See the Qtopia Core documentation for more information.


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Qt 4.1.3