XkbResizeDeviceButtonActions (3)

Status XkbResizeDeviceButtonActions (\^XkbDeviceInfoPtr device_info\^, unsigned int new_total\^);

- device_info

structure in which to allocate button actions

- new_total

new total number of button actions needed

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.

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;

BadAlloc

Unable to allocate storage

BadValue

An argument is out of range

XkbFreeDeviceInfo(3)