XkbActionCtrls man page

XkbActionCtrls — Returns the ctrls fields of act converted to an unsigned int

Synopsis

unsigned int XkbActionCtrls (XkbCtrlsAction act);

Arguments

- act

action from which to extract controls

Description

Actions associated with the XkbCtrlsAction structure change the state of the  boolean controls.

The type field can have any one of the values shown in Table 1.

Table 1 Controls Action Types
Type Effect
XkbSA_SetControls A key press enables any boolean controls specified in the ctrls fields that were  not already enabled at  the time of the key press. A key release disables any controls enabled by the key press. This action can cause XkbControlsNotify events.
XkbSA_LockControls If the XkbSA_LockNoLock bit is not set in the flags field, a key press enables  any controls specified in  the ctrls fields that were not already enabled at the time of the key press.
If the XkbSA_LockNoUnlock bit is not set in the flags field, a key release  disables any controls  specified in the ctrls fields that were not already disabled at the time of the  key press.
This action can cause XkbControlsNotify events.

The flags field is composed of the bitwise inclusive OR of the masks shown in Table 2.

Table 2 Control Action Flags
Flag Meaning
XkbSA_LockNoLock If set, and the action type is XkbSA_LockControls, the server only disables  controls.
XkbSA_LockNoUnlock If set, and the action type is XkbSA_LockControls, the server only enables  controls.

The XkbSA_SetControls action implements a key that enables a boolean control  when pressed and disables it  when released. The XkbSA_LockControls action is used to implement a key that  toggles the state of a  boolean control each time it is pressed and released. The XkbSA_LockNoLock and  XkbSA_LockNoUnlock flags  allow modifying the toggling behavior to only unlock or only lock the boolean  control.

The ctrls0, ctrls1, ctrls2, and ctrls3 fields represent the boolean controls in the enabled_ctrls field of the controls structure. Xkb macros, to convert between the two formats.

XkbActionCtrls returns the ctrls fields of act converted to an unsigned int.

Structures

    typedef struct _XkbCtrlsAction {
        unsigned char    type;    /∗ XkbSA_SetControls, XkbSA_LockControls */
        unsigned char    flags;   /∗ with type, controls enabling and disabling 
of controls */
        unsigned char    ctrls3;  /∗ ctrls0 through ctrls3 represent the boolean 
controls */
        unsigned char    ctrls2;  /∗ ctrls0 through ctrls3 represent the boolean 
controls */
        unsigned char    ctrls1;  /∗ ctrls0 through ctrls3 represent the boolean 
controls */
        unsigned char    ctrls0;  /∗ ctrls0 through ctrls3 represent the boolean 
controls */
    } XkbCtrlsAction;

Info

libX11 1.6.5 X Version 11 XKB FUNCTIONS