SysTutorials Posts

XDGA – Client library for the XFree86-DGA extension. Synopsis #include <X11/extensions/xf86dga.h> Bool XDGAQueryExtension( Display *dpy, int *eventBase, int *errorBase) Bool XDGAQueryVersion( Display *dpy, int *majorVersion, int *minorVersion) XDGAMode *XDGAQueryModes( Display *dpy, int screen, int *num) XDGADevice *XDGASetMode( Display *dpy, int screen, int mode) Bool XDGAOpenFramebuffer( Display *dpy, int screen) void XDGACloseFramebuffer( Display *dpy, int screen)…

XFree – free client data Syntax int XFree(void *data); Arguments data Specifies the data that are to be freed. Description The XFree function is a general-purpose Xlib routine that frees the specified data. You must use it to free any objects that were allocated by Xlib, unless an alternate function is explicitly specified for the…

XSetScreenSaver, XForceScreenSaver, XActivateScreenSaver, XResetScreenSaver, XGetScreenSaver – manipulate the screen saver Syntax int XSetScreenSaver(Display *display, int timeout, int interval, int prefer_blanking, int allow_exposures); int XForceScreenSaver(Display *display, int mode); int XActivateScreenSaver(Display *display); int XResetScreenSaver(Display *display); int XGetScreenSaver(Display *display, int *timeout_return, int *interval_return, int *prefer_blanking_return, int *allow_exposures_return); Arguments allow_exposures Specifies the screen save control values. You can pass…

XFontsOfFontSet, XBaseFontNameListOfFontSet, XLocaleOfFontSet, XContextDependentDrawing, XContextualDrawing, XDirectionalDependentDrawing – obtain fontset information Syntax int XFontsOfFontSet(XFontSet font_set, XFontStruct ***font_struct_list_return, char ***font_name_list_return); char *XBaseFontNameListOfFontSet(XFontSet font_set); char *XLocaleOfFontSet(XFontSet font_set); Bool XContextDependentDrawing(XFontSet font_set); Bool XContextualDrawing(XFontSet font_set); Bool XDirectionalDependentDrawing(XFontSet font_set); Arguments font_set Specifies the font set. font_name_list_return Returns the list of font names. font_struct_list_return Returns the list of font structs. Description The…

XLoadFont, XQueryFont, XLoadQueryFont, XFreeFont, XGetFontProperty, XUnloadFont, XCharStruct, XFontProp, XChar2b, XFontStruct – load or unload fonts and font metric structures Syntax Font XLoadFont(Display *display, char *name); XFontStruct *XQueryFont(Display *display, XID font_ID); XFontStruct *XLoadQueryFont(Display *display, char *name); int XFreeFont(Display *display, XFontStruct *font_struct); Bool XGetFontProperty(XFontStruct *font_struct, Atom atom, unsigned long *value_return); int XUnloadFont(Display *display, Font font); Arguments atom…

XFontSetExtents – XFontSetExtents structure Structures The XFontSetExtents structure contains: typedef struct {         XRectangle max_ink_extent;      /* over all drawable characters */         XRectangle max_logical_extent;  /* over all drawable characters */ } XFontSetExtents; The XRectangle structures used to return font set metrics are the usual Xlib screen-oriented rectangles with x, y giving the upper left corner, and width and height always positive. The max_ink_extent…

XLoadFont, XQueryFont, XLoadQueryFont, XFreeFont, XGetFontProperty, XUnloadFont, XCharStruct, XFontProp, XChar2b, XFontStruct – load or unload fonts and font metric structures Syntax Font XLoadFont(Display *display, char *name); XFontStruct *XQueryFont(Display *display, XID font_ID); XFontStruct *XLoadQueryFont(Display *display, char *name); int XFreeFont(Display *display, XFontStruct *font_struct); Bool XGetFontProperty(XFontStruct *font_struct, Atom atom, unsigned long *value_return); int XUnloadFont(Display *display, Font font); Arguments atom…

XFocusChangeEvent – FocusIn and FocusOut event structure Structures The structure for FocusIn and FocusOut events contains: typedef struct {         int type;       /* FocusIn or FocusOut */         unsigned long serial;   /* # of last request processed by server */         Bool send_event;        /* true if this came from a SendEvent request */         Display *display;       /* Display the event was read from */         Window window;  /* window of event */         int mode;       /* NotifyNormal, NotifyGrab, NotifyUngrab */         int…

XFlush, XSync, XEventsQueued, XPending – handle output buffer or event queue Syntax int XFlush(Display *display); int XSync(Display *display, Bool discard); int XEventsQueued(Display *display, int mode); int XPending(Display *display); Arguments discard Specifies a Boolean value that indicates whether XSync discards all events on the event queue. display Specifies the connection to the X server. mode Specifies…

XSaveContext, XFindContext, XDeleteContext, XUniqueContext – associative look-up routines Syntax int XSaveContext(Display *display, XID rid, XContext context, XPointer data); int XFindContext(Display *display, XID rid, XContext context, XPointer *data_return); int XDeleteContext(Display *display, XID rid, XContext context); XContext XUniqueContext(void); Arguments context Specifies the context type to which the data belongs. data Specifies the data to be associated with…

XFilterEvent – filter X events for an input method Syntax Bool XFilterEvent(XEvent *event, Window w); Arguments event Specifies the event to filter. w Specifies the window for which the filter is to be applied. Description If the window argument is None, XFilterEvent applies the filter to the window specified in the XEvent structure. The window…

XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs – fill rectangles, polygons, or arcs Syntax int XFillRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XFillRectangles(Display *display, Drawable d, GC gc, XRectangle *rectangles, int nrectangles); int XFillPolygon(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int shape, int mode);…

XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs – fill rectangles, polygons, or arcs Syntax int XFillRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XFillRectangles(Display *display, Drawable d, GC gc, XRectangle *rectangles, int nrectangles); int XFillPolygon(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int shape, int mode);…

XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs – fill rectangles, polygons, or arcs Syntax int XFillRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XFillRectangles(Display *display, Drawable d, GC gc, XRectangle *rectangles, int nrectangles); int XFillPolygon(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int shape, int mode);…

XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs – fill rectangles, polygons, or arcs Syntax int XFillRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XFillRectangles(Display *display, Drawable d, GC gc, XRectangle *rectangles, int nrectangles); int XFillPolygon(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int shape, int mode);…

XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs – fill rectangles, polygons, or arcs Syntax int XFillRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XFillRectangles(Display *display, Drawable d, GC gc, XRectangle *rectangles, int nrectangles); int XFillPolygon(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int shape, int mode);…

XSetWMName, XGetWMName, XStoreName, XFetchName – set or read a window’s WM_NAME property Syntax void XSetWMName(Display *display, Window w, XTextProperty *text_prop); Status XGetWMName(Display *display, Window w, XTextProperty *text_prop_return); int XStoreName(Display *display, Window w, char *window_name); Status XFetchName(Display *display, Window w, char **window_name_return); Arguments display Specifies the connection to the X server. text_prop Specifies the XTextProperty structure…

XStoreBytes, XStoreBuffer, XFetchBytes, XFetchBuffer, XRotateBuffers – manipulate cut and paste buffers Syntax int XStoreBytes(Display *display, char *bytes, int nbytes); int XStoreBuffer(Display *display, char *bytes, int nbytes, int buffer); char *XFetchBytes(Display *display, int *nbytes_return); char *XFetchBuffer(Display *display, int *nbytes_return, int buffer); int XRotateBuffers(Display *display, int rotate); Arguments buffer Specifies the buffer in which you want to…

XStoreBytes, XStoreBuffer, XFetchBytes, XFetchBuffer, XRotateBuffers – manipulate cut and paste buffers Syntax int XStoreBytes(Display *display, char *bytes, int nbytes); int XStoreBuffer(Display *display, char *bytes, int nbytes, int buffer); char *XFetchBytes(Display *display, int *nbytes_return); char *XFetchBuffer(Display *display, int *nbytes_return, int buffer); int XRotateBuffers(Display *display, int rotate); Arguments buffer Specifies the buffer in which you want to…

XF86VidModeQueryExtension, XF86VidModeQueryVersion, XF86VidModeSetClientVersion, XF86VidModeGetModeLine, XF86VidModeGetAllModeLines, XF86VidModeAddModeLine, XF86VidModeDeleteModeLine, XF86VidModeModModeLine, XF86VidModeValidateModeLine, XF86VidModeSwitchMode, XF86VidModeSwitchToMode, XF86VidModeLockModeSwitch, XF86VidModeGetMonitor, XF86VidModeGetViewPort, XF86VidModeSetViewPort, XF86VidModeGetDotClocks, XF86VidModeGetGamma, XF86VidModeSetGamma, XF86VidModeGetGammaRamp, XF86VidModeSetGammaRamp, XF86VidModeGetGammaRampSize, XF86VidModeGetPermissions – Extension library for the XFree86-VidMode X extension Synopsis #include <X11/extensions/xf86vmode.h> Bool XF86VidModeQueryExtension( Display *display, int *event_base_return, int *error_base_return); Bool XF86VidModeQueryVersion( Display *display, int *major_version_return, int *minor_version_return); Bool XF86VidModeSetClientVersion( Display *display); Bool XF86VidModeGetModeLine(…