XIChangeHierarchy(3)


NAME

   XIChangeHierarchy - change the device hierarchy.

SYNOPSIS

   #include <X11/extensions/XInput2.h>

   Status XIChangeHierarchy( Display *display,
                             XIAnyHierarchyChangeInfo *changes,
                             int num_changes);

   display
          Specifies the connection to the X server.

   num_changes
          Specifies the number of elements in changes.

   changes
          Specifies the changes to be made.

DESCRIPTION

       XIChangeHierarchy modifies the device hierarchy by creating or
       removing master devices or changing the attachment of slave
       devices. If num_changes is non-zero, changes is an array of
       XIAnyHierarchyChangeInfo structures. If num_changes is equal or less than
       zero, XIChangeHierarchy does nothing.

       XIChangeHierarchy processes changes in order, effective
       immediately. If an error occurs, processing is aborted and the
       error is reported to the client. Changes already made remain
       effective.

       The list of changes is any combination of
       XIAnyHierarchyChangeInfo. The type of a hierarchy change can be
       XIAddMaster, XIRemoveMaster, XIAttachSlave or XIDetachSlave.

       typedef union {
           int type;
           XIAddMasterInfo add;
           XIRemoveMasterInfo remove;
           XIAttachSlave attach;
           XIDetachSlave detach;
       } XIAnyHierarchyChangeInfo;

       typedef struct {
           int type; /* XIAddMaster */
           char* name;
           Bool send_core;
           Bool enable;
       } XIAddMasterInfo;

       typedef struct {
           int type; /* XIRemoveMaster */
           int deviceid;
           int return_mode;
           int return_pointer;
           int return_keyboard;
       } XIRemoveMasterInfo;

       typedef struct {
           int type; /* XIAttachSlave */
           int deviceid;
           int new_master;
       } XIAttachSlaveInfo;

       typedef struct {
           int type; /* XIDetachSlave */
           int deviceid;
       } XIDetachSlaveInfo;

       XIAddMasterInfo creates a new master pointer and a new
       master keyboard labelled "name pointer" and "name keyboard"
       respectively. If sendCore is True, the devices will send core
       events. If enable is True, the device is enabled immediately.

       XIAddMasterInfo can generate a BadValue error.

       XIRemoveMasterInfo removes device and its paired master device.
       If returnMode is XIAttachToMaster, all pointers attached to
       device or its paired master device are attached to
       returnPointer. Likewise, all keyboards are attached to
       returnKeyboard. If returnMode is XIFloating, all attached
       devices are set to floating.

       XIRemoveMasterInfo can generate a BadValue and a BadDevice
       error.

       XIAttachSlaveInfo attaches device to newMaster. If the device
       is currently attached to a master device, it is detached from
       the master device and attached to the new master device.

       XIAttachSlaveInfo can generate a BadDevice error.

       XIDettachSlaveInfo deattaches device from the current master
       device and sets it floating. If the device is already floating,
       no changes are made.

       XIDetachSlaveInfo can generate a BadDevice error.

       XIChangeHierarchy generates an XIHierarchyEvent if any
       modifications were successful.

DIAGNOSTICS

       BadDevice
              An invalid device was specified. The device does not
              exist or is not a appropriate for the type of change.

       BadValue
              Some numeric value falls out of the allowed range.

                              03/09/2013              XICHANGEHIERARCHY(3)





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