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XkbResizeDeviceButtonActions(3)


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)



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