x11r4 man page for xsetcommand

XSetCommand(3)							  XLIB FUNCTIONS						    XSetCommand(3)

NAME
       XSetCommand, XGetCommand - set or read a window's WM_COMMAND property

SYNTAX
       int XSetCommand(Display *display, Window w, char **argv, int argc);

       Status XGetCommand(Display *display, Window w, char ***argv_return, int *argc_return);

ARGUMENTS
       argc	 Specifies the number of arguments.

       argc_return
		 Returns the number of arguments returned.

       argv	 Specifies the application's argument list.

       argv_return
		 Returns the application's argument list.

       display	 Specifies the connection to the X server.

       w	 Specifies the window.

DESCRIPTION
       The XSetCommand function sets the command and arguments used to invoke the application.	(Typically, argv is the argv array of your main
       program.)  If the strings are not in the Host Portable Character Encoding, the result is implementation-dependent.

       XSetCommand can generate BadAlloc and BadWindow errors.

       The XGetCommand function reads the WM_COMMAND property from the specified window and returns a string list.  If the WM_COMMAND property
       exists, it is of type STRING and format 8.  If sufficient memory can be allocated to contain the string list, XGetCommand fills in the
       argv_return and argc_return arguments and returns a nonzero status.  Otherwise, or if any other error is encountered, it returns a zero
       status.	If the data returned by the server is in the Latin Portable Character Encoding, then the returned strings are in the Host Portable
       Character Encoding.  Otherwise, the result is implementation-dependent.	To free the memory allocated to the string list, use
       XFreeStringList.

PROPERTIES
       WM_COMMAND
		 The command and arguments, null-separated, used to invoke the application.

DIAGNOSTICS
       BadAlloc  The server failed to allocate the requested resource or server memory.

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

SEE ALSO
       XAllocClassHint(3X11), XAllocIconSize(3X11), XAllocSizeHints(3X11), XAllocWMHints(3X11), XSetTransientForHint(3X11), XSetTextProp-
       erty(3X11), XSetWMClientMachine(3X11), XSetWMColormapWindows(3X11), XSetWMIconName(3X11), XSetWMName(3X11), XSetWMProperties(3X11), XSetWM-
       Protocols(3X11), XStringListToTextProperty(3X11)
       Xlib - C Language X Interface

X Version 11							   libX11 1.2.1 						    XSetCommand(3)