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.TH XkbLatchModifiers 3 "libX11 1.8.7" "X Version 11" "XKB FUNCTIONS"
.SH NAME
XkbLatchModifiers \-  Latches and unlatches any of the eight real keyboard 
modifiers
.SH SYNOPSIS
.HP
.B Bool XkbLatchModifiers
.BI "(\^Display *" "display" "\^,"
.BI "unsigned int " "device_spec" "\^,"
.BI "unsigned int " "affect" "\^,"
.BI "unsigned int " "values" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I display
connection to the X server 
.TP
.I device_spec
device ID, or XkbUseCoreKbd
.TP
.I affect
mask of real modifiers whose lock state is to change
.TP
.I values
1 => lock, 0 => unlock; only for modifiers selected by affect
.SH DESCRIPTION
.LP
.I XkbLatchModifiers 
sends a request to the server to latch the real modifiers 
selected by both 
.I affect 
and 
.I values 
and to unlatch the real modifiers selected by 
.I affect
, but not selected by 
.I values. 

.I 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: 

.TS
c 
l 
l.
Table 1 Real Modifier Masks
_
Mask
_
ShiftMask
LockMask
ControlMask
Mod1Mask
Mod2Mask
Mod3Mask
Mod4Mask
Mod5Mask
.TE
.SH "RETURN VALUES"
.TP 15
True
The 
.I XkbLatchModifiers 
function returns True if a request was sent to the server to latch the real modifiers selected by both 
.I affect 
and 
.I values 
and to unlatch the real modifiers selected by 
.I affect
, but not selected by 
.I values. 
.TP 15
False
The 
.I XkbLatchModifiers 
function returns False if the request was not sent.