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<HTML><HEAD><TITLE>Xlib Programming Manual: Function Sets</TITLE></HEAD><BODY><H1 ALIGN=center>6.12.7 Function Sets</H1>Functions to convert between device-dependent color spacesand CIE XYZ may differ for different classes of output devices(for example, color versus gray monitors).Therefore, the notion of a Color Characterization Function Sethas been developed.A function set consists of device-dependent color spacesand the functions that convert color specifications between these device-dependent color spaces and the CIE XYZ color spaceappropriate for a particular class of output devices.The function set also contains a function that readscolor characterization data off root window properties.It is this characterization data that will differ between devices withina class of output devices.<!.IN "Device Color Characterization">For details about how color characterization data isstored in root window properties,see the section on Device Color Characterization in the<I><A HREF="/gui/x/icccm/">Inter-Client Communication Conventions Manual</A></I>.The LINEAR_RGB function set is provided by Xliband will support most color monitors.Function sets may require data that differsfrom those needed for the LINEAR_RGB function set.In that case, its corresponding data may be stored on different root window properties.<H5 ALIGN=right><I>Next: <A HREF="adding-function-sets.html">Adding Function Sets</A></I></H5><HR><ADDRESS><A HREF="http://tronche.com/">Christophe Tronche</A>, <A HREF="mailto:ch.tronche@computer.org">ch.tronche@computer.org</A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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