Status XGetWMProtocols(display, w, protocols_return, count_return)
      Display *display;
      Window w;
      Atom **protocols_return;
      int *count_return;


display Specifies the connection to the X server.
w Specifies the window.
protocols_return Returns the list of protocols.
count_return Returns the number of protocols in the list.


The 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, 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 XFree().

XGetWMProtocols() can generate a BadWindow error.


BadWindow A value for a Window argument does not name a defined Window.

See also

XAllocClassHint(), XAllocIconSize(), XAllocSizeHints(), XAllocWMHints(), XSetCommand(), XSetTextProperty(), XSetTransientForHint(), XSetWMClientMachine(), XSetWMColormapWindows(), XSetWMIconName(), XSetWMName(), XSetWMProperties(), XSetWMProtocols(), XStringListToTextProperty(), "Setting and Reading the WM_TRANSIENT_FOR Property".
Christophe Tronche, [email protected]