1XkbAllocDeviceInfo(3)            XKB FUNCTIONS           XkbAllocDeviceInfo(3)
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NAME

6       XkbAllocDeviceInfo - Obtain an XkbDeviceInfoRec structure
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SYNOPSIS

9       XkbDeviceInfoPtr XkbAllocDeviceInfo (unsigned int device_spec, unsigned
10              int n_buttons, unsigned int sz_leds);
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ARGUMENTS

13       - device_spec
14              device ID with which structure will be used
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16       - n_buttons
17              number of button actions to allocate space for
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19       - sz_leds
20              number of LED feedbacks to allocate space for
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DESCRIPTION

23       XkbAllocDeviceInfo allocates space for  an  XkbDeviceInfoRec  structure
24       and  initializes  that structure's device_spec field with the device ID
25       specified by device_spec.  If n_buttons is  nonzero,  n_buttons  XkbAc‐
26       tions are linked into the XkbDeviceInfoRec structure and initialized to
27       zero. If sz_leds is nonzero, sz_leds XkbDeviceLedInfoRec structures are
28       also  allocated  and linked into the XkbDeviceInfoRec structure. If you
29       request XkbDeviceLedInfoRec structures be allocated using this request,
30       you must initialize them explicitly.
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32       To obtain an XkbDeviceLedInfoRec structure, use XkbAllocDeviceLedInfo.
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STRUCTURES

35       Information  about  X  Input Extension devices is transferred between a
36       client program and the Xkb extension in an XkbDeviceInfoRec structure:
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38           typedef struct {
39               char *               name;          /* name for device */
40               Atom                 type;          /* name for class of devices */
41               unsigned short       device_spec;   /* device of interest */
42               Bool                 has_own_state; /* True=>this device has its own state */
43               unsigned short       supported;     /* bits indicating supported capabilities */
44               unsigned short       unsupported;   /* bits indicating unsupported capabilities */
45               unsigned short       num_btns;      /* number of entries in btn_acts */
46               XkbAction *          btn_acts;      /* button actions */
47               unsigned short       sz_leds;       /* total number of entries in LEDs vector */
48               unsigned short       num_leds;      /* number of valid entries in LEDs vector */
49               unsigned short       dflt_kbd_fb;   /* input extension ID of default (core kbd) indicator */
50               unsigned short       dflt_led_fb;   /* input extension ID of default indicator feedback */
51               XkbDeviceLedInfoPtr  leds;          /* LED descriptions */
52           } XkbDeviceInfoRec, *XkbDeviceInfoPtr;
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55           typedef struct {
56               unsigned short      led_class;        /* class for this LED device*/
57               unsigned short      led_id;           /* ID for this LED device */
58               unsigned int        phys_indicators;  /* bits for which LEDs physically present */
59               unsigned int        maps_present;     /* bits for which LEDs have maps in maps */
60               unsigned int        names_present;    /* bits for which LEDs are in names */
61               unsigned int        state;            /* 1 bit => corresponding LED is on */
62               Atom                names[XkbNumIndicators];   /* names for LEDs */
63               XkbIndicatorMapRec  maps;             /* indicator maps for each LED */
64           } XkbDeviceLedInfoRec, *XkbDeviceLedInfoPtr;
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SEE ALSO

67       XkbAllocDeviceLedInfo(3)
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71X Version 11                    libX11 1.7.3.1           XkbAllocDeviceInfo(3)
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