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XkbFreeDeviceInfo(3)              XKB FUNCTIONS             XkbFreeDeviceInfo(3)




NAME

       XkbFreeDeviceInfo - Free an XkbDeviceInfoRec structure


SYNOPSIS

       void XkbFreeDeviceInfo (XkbDeviceInfoPtr device_info, unsigned int which,
              Bool free_all);


ARGUMENTS

       device_info
              pointer to XkbDeviceInfoRec in which to free items

       which  mask of components of device_info to free

       free_all
              True => free everything, including device_info


DESCRIPTION

       If free_all is True, the XkbFreeDeviceInfo frees all components of
       device_info and the XkbDeviceInfoRec structure pointed to by device_info
       itself. If free_all is False, the value of which determines which
       subcomponents are freed.  which is an inclusive OR of one or more of the
       values from Table 1. If which contains XkbXI_ButtonActionsMask, all
       button actions associated with device_info are freed,
       device_info->btn_acts is set to NULL, and device_info->num_btns is set to
       zero. If which contains all bits in XkbXI_IndicatorsMask, all
       XkbDeviceLedInfoRec structures associated with device_info are freed,
       device_info->leds is set to NULL, and device_info->sz_leds and
       device_info->num_leds are set to zero. If which contains
       XkbXI_IndicatorMapsMask, all indicator maps associated with device_info
       are cleared, but the number of LEDs and the leds structures themselves is
       preserved. If which contains XkbXI_IndicatorNamesMask, all indicator
       names associated with device_info are cleared, but the number of LEDs and
       the leds structures themselves is preserved. If which contains
       XkbXI_IndicatorStateMask, the indicator state associated with the
       device_info leds are set to zeros but the number of LEDs and the leds
       structures themselves is preserved.
                                Table 1 XkbDeviceInfoRec Mask Bits
       ____________________________________________________________________________________
       Name                         XkbDeviceInfoRec Value     Capability If Set
                                    Fields Effected
       ____________________________________________________________________________________
       XkbXI_KeyboardsMask                           (1L <<0) Clients can use all
                                                              Xkb requests and events
                                                              with KeyClass devices
                                                              supported by the input
                                                              device extension.

       XkbXI_ButtonActionsMask       num_btns        (1L <<1) Clients can assign key
                                     btn_acts                 actions to buttons
                                                              non-KeyClass input
                                                              extension devices.

       XkbXI_IndicatorNamesMask      leds->names     (1L <<2) Clients can assign
                                                              names to indicators on
                                                              non-KeyClass input
                                                              extension devices.

       XkbXI_IndicatorMapsMask       leds->maps      (1L <<3) Clients can assign
                                                              indicator maps to
                                                              indicators on
                                                              non-KeyClass input
                                                              extension devices.

       XkbXI_IndicatorStateMask      leds->state     (1L <<4) Clients can request
                                                              the status of indicators
                                                              on non-KeyClass input
                                                              extension devices.

       XkbXI_IndicatorsMask          sz_leds         (0x1c)   XkbXI_IndicatorNamesMask |
                                     num_leds                 XkbXI_IndicatorMapsMask |
                                     leds->*                  XkbXI_IndicatorStateMask

       XkbXI_UnsupportedFeaturesMask unsupported     (1L <<15)

       XkbXI_AllDeviceFeaturesMask   Those selected  (0x1e)   XkbXI_IndicatorsMask |
                                     by Value Column          XkbSI_ButtonActionsMask
                                     masks

       XkbXI_AllFeaturesMask         Those selected  (0x1f)   XkbSI_AllDeviceFeaturesMask |
                                     by Value Column          XkbSI_KeyboardsMask
                                     masks

       XkbXI_AllDetailsMask          Those selected  (0x801f) XkbXI_AllFeaturesMask |
                                     by Value column          XkbXI_UnsupportedFeaturesMask
                                     masks


STRUCTURES

       Information about X Input Extension devices is transferred between a
       client program and the Xkb extension in an XkbDeviceInfoRec structure:

       typedef struct {
           char *               name;          /* name for device */
           Atom                 type;          /* name for class of devices */
           unsigned short       device_spec;   /* device of interest */
           Bool                 has_own_state; /* True=>this device has its own state */
           unsigned short       supported;     /* bits indicating supported capabilities */
           unsigned short       unsupported;   /* bits indicating unsupported capabilities */
           unsigned short       num_btns;      /* number of entries in btn_acts */
           XkbAction *          btn_acts;      /* button actions */
           unsigned short       sz_leds;       /* total number of entries in LEDs vector */
           unsigned short       num_leds;      /* number of valid entries in LEDs vector */
           unsigned short       dflt_kbd_fb;   /* input extension ID of default (core kbd) indicator */
           unsigned short       dflt_led_fb;   /* input extension ID of default indicator feedback */
           XkbDeviceLedInfoPtr  leds;          /* LED descriptions */
       } XkbDeviceInfoRec, *XkbDeviceInfoPtr;

       typedef struct {
           unsigned short      led_class;        /* class for this LED device*/
           unsigned short      led_id;           /* ID for this LED device */
           unsigned int        phys_indicators;  /* bits for which LEDs physically present */
           unsigned int        maps_present;     /* bits for which LEDs have maps in maps */
           unsigned int        names_present;    /* bits for which LEDs are in names */
           unsigned int        state;            /* 1 bit => corresponding LED is on */
           Atom                names[XkbNumIndicators];   /* names for LEDs */
           XkbIndicatorMapRec  maps;             /* indicator maps for each LED */
       } XkbDeviceLedInfoRec, *XkbDeviceLedInfoPtr;




X Version 11                      libX11 1.8.2              XkbFreeDeviceInfo(3)

xorg-libX11 1.8.2 - Generated Wed Nov 16 19:27:26 CST 2022
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