NAME

XGetWMProtocols − 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

displaySpecifies a connection to an X server; returned from XOpenDisplay(). 

wSpecifies the window. 

protocols_return
Returns the list of protocols.

count_return
Returns the number of protocols in the list.

Availability

Release 4 and later. 

Description

XGetWMProtocols() 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 protocols_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_FOCUSAssignment of keyboard focus

WM_SAVE_YOURSELFSave client state warning

WM_DELETE_UNKNOWNRequest to delete top-level window

For more information, see Volume One, Chapter 10, Interclient Communication. 

Errors

BadWindow

See Also

XSetWMProtocols(). 

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