oracular (3) XkbResizeDeviceButtonActions.3.gz

NAME

       XkbResizeDeviceButtonActions  -  Allocate  additional  space  for  button  actions in an XkbDeviceInfoRec
       structure

SYNOPSIS

       Status XkbResizeDeviceButtonActions (XkbDeviceInfoPtr device_info, unsigned int new_total);

ARGUMENTS

       device_info
              structure in which to allocate button actions

       new_total
              new total number of button actions needed

DESCRIPTION

       XkbResizeDeviceButtonActions reallocates space, if necessary, to make sure there is room for a  total  of
       new_total  button  actions  in  the  device_info  structure.  Any  new  entries  allocated are zeroed. If
       successful, XkbResizeDeviceButtonActions returns Success. If new_total is zero, all  button  actions  are
       deleted,  device_info->num_btns  is set to zero, and device_info->btn_acts is set to NULL. If device_info
       is invalid or new_total is greater than 255, BadValue is returned. If a memory allocation failure occurs,
       a BadAlloc is returned.

       To free an XkbDeviceInfoRec structure, use XkbFreeDeviceInfo.

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;

DIAGNOSTICS

       BadAlloc       Unable to allocate storage

       BadValue       An argument is out of range

SEE ALSO

       XkbFreeDeviceInfo(3)