Provided by: libx11-doc_1.7.5-1ubuntu0.3_all 

NAME
XkbLatchModifiers - Latches and unlatches any of the eight real keyboard modifiers
SYNOPSIS
Bool XkbLatchModifiers (Display *display, unsigned int device_spec, unsigned int affect, unsigned int
values);
ARGUMENTS
display
connection to the X server
device_spec
device ID, or XkbUseCoreKbd
affect mask of real modifiers whose lock state is to change
values 1 => lock, 0 => unlock; only for modifiers selected by affect
DESCRIPTION
XkbLatchModifiers sends a request to the server to latch the real modifiers selected by both affect and
values and to unlatch the real modifiers selected by affect , but not selected by values.
XkbLatchModifiers does not wait for a reply from the server. It returns True if the request was sent, and
False otherwise.
The functions in this section that change the use of modifiers use a mask in the parameter affect. It is
a bitwise inclusive OR of the legal modifier masks:
Table 1 Real Modifier Masks
────────────────────────────
Mask
────────────────────────────
ShiftMask
LockMask
ControlMask
Mod1Mask
Mod2Mask
Mod3Mask
Mod4Mask
Mod5Mask
RETURN VALUES
True The XkbLatchModifiers function returns True if a request was sent to the server to latch
the real modifiers selected by both affect and values and to unlatch the real modifiers
selected by affect , but not selected by values.
False The XkbLatchModifiers function returns False if the request was not sent.
X Version 11 libX11 1.7.5 XkbLatchModifiers(3)