XGetWMProtocols()XGetWMProtocols()NameXGetWMProtocols – get a window's WM_PROTOCOLS property.
Synopsis
Status XGetWMProtocols(display, w, protocols_return, count_return)
Display *display;
Window w;
Atom **protocols_return;
int *count_return;
Arguments
display Specifies a connection to an X server; returned from
XOpenDisplay().
w Specifies the window.
protocols_return
Returns the list of protocols.
count_return
Returns the number of protocols in the list.
Returns
Zero on failure, non-zero on success.
Availability
Release 4 and later.
DescriptionXGetWMProtocols() gets the list of atoms stored in the WM_PROTOCOLS
property of 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, XGetWMProtocols() sets the proto‐
cols_return argument to a list of atoms, sets the count_return argument
to the number of elements in list, and returns a a non-zero status.
Otherwise, it sets neither of the return arguments and returns a zero
status.
The list of standard protocols at present is as follows:
WM_TAKE_FOCUS Assignment of keyboard focus.
WM_SAVE_YOURSELF Save client state warning.
WM_DELETE_UNKNOWN
Request to delete top-level window.
For more information, see Volume One, Chapter 12, Interclient Communi‐
cation.
Errors
BadWindow
See AlsoXSetWMProtocols().
Xlib - Window Manager Hints XGetWMProtocols()