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xcb_set_input_focus

Section: XCB Requests (3)
Updated: libxcb 1.12
Index Return to Main Contents
 

NAME

xcb_set_input_focus - Sets input focus  

SYNOPSIS

#include <xcb/xproto.h>  

Request function

xcb_void_cookie_t xcb_set_input_focus(xcb_connection_t *conn, uint8_t revert_to, xcb_window_t focus, xcb_timestamp_t time);
 

REQUEST ARGUMENTS

conn
The XCB connection to X11.
revert_to
One of the following values:
XCB_INPUT_FOCUS_NONE
The focus reverts to XCB_NONE, so no window will have the input focus.
XCB_INPUT_FOCUS_POINTER_ROOT
The focus reverts to XCB_POINTER_ROOT respectively. When the focus reverts, FocusIn and FocusOut events are generated, but the last-focus-change time is not changed.
XCB_INPUT_FOCUS_PARENT
The focus reverts to the parent (or closest viewable ancestor) and the new revert_to value is XCB_INPUT_FOCUS_NONE.
XCB_INPUT_FOCUS_FOLLOW_KEYBOARD
NOT YET DOCUMENTED. Only relevant for the xinput extension.

Specifies what happens when the focus window becomes unviewable (if focus is neither XCB_NONE nor XCB_POINTER_ROOT).

focus
The window to focus. All keyboard events will be reported to this window. The window must be viewable (TODO), or a xcb_match_error_t occurs (TODO).

If focus is XCB_NONE (TODO), all keyboard events are discarded until a new focus window is set.

If focus is XCB_POINTER_ROOT (TODO), focus is on the root window of the screen on which the pointer is on currently.

time
Timestamp to avoid race conditions when running X over the network.

The special value XCB_CURRENT_TIME will be replaced with the current server time.

 

DESCRIPTION

Changes the input focus and the last-focus-change time. If the specified time is earlier than the current last-focus-change time, the request is ignored (to avoid race conditions when running X over the network).

A FocusIn and FocusOut event is generated when focus is changed.  

RETURN VALUE

Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the event loop.

If you want to handle errors directly with xcb_request_check instead, use xcb_set_input_focus_checked. See xcb-requests(3) for details.  

ERRORS

xcb_match_error_t
The specified focus window is not viewable.
xcb_value_error_t
TODO: Reasons?
xcb_window_error_t
The specified focus window does not exist.
 

SEE ALSO

xcb-requests(3), xcb_focus_in_event_t(3), xcb_focus_out_event_t(3)  

AUTHOR

Generated from xproto.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.


 

Index

NAME
SYNOPSIS
Request function
REQUEST ARGUMENTS
DESCRIPTION
RETURN VALUE
ERRORS
SEE ALSO
AUTHOR


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