Xfontcache(3)

NAME
Xfontcache - X-TrueType font cache extension client library

SYNOPSIS
#include <X11/extension/FontCache.h>

typedef struct {
	long	himark;
	long	lowmark;
	long	balance;
} FontCacheSettings, *FontCacheSettingsPtr;
struct cacheinfo {
	long	hits;
	long	misshits;
	long	purged;
	long	usage;
};
typedef struct {
	long	purge_runs;
	long	purge_stat;
	long	balance;
	struct cacheinfo	f;
	struct cacheinfo	v;
} FontCacheStatistics, *FontCacheStatisticsPtr;

Bool FontCacheQueryExtension(Display *dpy, int *event_basep, int *error_basep);

Status FontCacheQueryVersion(Display *dpy, int *major_versionp, int *minor_versionp);

Status FontCacheGetCacheSettings(Display *dpy, FontCacheSettings *cache info);

Status FontCacheChangeCacheSettings(Display *dpy, FontCacheSettings *cache info);

Status FontCacheGetCacheStatistics(Display *dpy, FontCacheStatistics *cache statistics info);

DESCRIPTION
FontCache is an extension that is used by X-TrueType to cache informations about fonts.

FontCacheQueryExtension returns True if the FontCache extension is available on the given display. A client must call FontCacheQueryExtension before calling any other Xfontcache function in order to negotiate a compatible protocol version; otherwise the client will get undefined behavior (Xfontcache may or may not work).

FontCacheQueryVersion returns True if the request succeeded; the values of the major and minor protocol versions supported by the server are returned in major_versionp and minor_versionp .

FontCacheGetCacheSettings should be documented here. Returns True on success or False on failure.

FontCacheChangeCacheSettings should be documented here. Returns True on success or False on failure.

FontCacheGetCacheStatistics should be documented here. Returns True on success or False on failure.

ERRORS
FontCacheChangeCacheSettings will return BadValue if passed an illegal parameters for lowmark, himark or balance fields.

SEE ALSO
Xlib(1), X(7)

AUTHOR
Akio Morita, X-TrueType team, Nozomi Ytow.

STABILITY
This API is considered as experimental. The Xfontcache library major revision may be incremented whenever incompatible changes are done to the API without notice. Use with care.