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.ds xT X Toolkit Intrinsics \- C Language Interface
.ds xW Athena X Widgets \- C Language X Toolkit Interface
.ds xL Xlib \- C Language X Interface
.ds xC Inter-Client Communication Conventions Manual
.TH XSetWMProtocols 3 "libX11 1.8.7" "X Version 11" "XLIB FUNCTIONS"
.SH NAME
XSetWMProtocols, XGetWMProtocols \- set or read a window's WM_PROTOCOLS property
.SH SYNTAX
.HP
Status XSetWMProtocols\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, Atom
*\fIprotocols\fP\^, int \fIcount\fP\^);
.HP
Status XGetWMProtocols\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, Atom
**\fIprotocols_return\fP\^, int *\fIcount_return\fP\^);
.SH ARGUMENTS
.IP \fIdisplay\fP 1i
Specifies the connection to the X server.
.IP \fIcount\fP 1i
Specifies the number of protocols in the list.
.IP \fIcount_return\fP 1i
Returns the number of protocols in the list.
.IP \fIprotocols\fP 1i
Specifies the list of protocols.
.IP \fIprotocols_return\fP 1i
Returns the list of protocols.
.SH DESCRIPTION
The
.B XSetWMProtocols
function replaces the WM_PROTOCOLS property on the specified window
with the list of atoms specified by the protocols argument.
If the property does not already exist,
.B XSetWMProtocols
sets the WM_PROTOCOLS property on the specified window
to the list of atoms specified by the protocols argument.
The property is stored with a type of ATOM and a format of 32.
If it cannot intern the WM_PROTOCOLS atom,
.B XSetWMProtocols
returns a zero status.
Otherwise, it returns a nonzero status.
.LP
.B XSetWMProtocols
can generate
.B BadAlloc
and
.B BadWindow
errors.
.LP
The
.B XGetWMProtocols
function returns the list of atoms stored in the WM_PROTOCOLS property
on the specified window.
These atoms describe window manager protocols in which the owner
of this window is willing to participate.
If the property exists, is of type ATOM, is of format 32,
and the atom WM_PROTOCOLS can be interned,
.B XGetWMProtocols
sets the protocols_return argument to a list of atoms,
sets the count_return argument to the number of elements in the list,
and returns a nonzero status.
Otherwise, it sets neither of the return arguments
and returns a zero status.
To release the list of atoms, use
.BR XFree .
.LP
.B XGetWMProtocols
can generate a
.B BadWindow
error.
.SH PROPERTIES
.TP 1i
\s-1WM_PROTOCOLS\s+1
List of atoms that identify the communications protocols between the
client and window manager in which the client is willing to participate.
.SH DIAGNOSTICS
.TP 1i
.B BadAlloc
The server failed to allocate the requested resource or server memory.
.TP 1i
.B BadWindow
A value for a Window argument does not name a defined Window.
.SH "SEE ALSO"
XAllocClassHint(3),
XAllocIconSize(3),
XAllocSizeHints(3),
XAllocWMHints(3),
XFree(3),
XSetCommand(3),
XSetTransientForHint(3),
XSetTextProperty(3),
XSetWMClientMachine(3),
XSetWMColormapWindows(3),
XSetWMIconName(3),
XSetWMName(3),
XSetWMProperties(3),
XStringListToTextProperty(3)
.br
\fI\*(xL\fP