osf1 man page for xallocclasshint

XAllocClassHint(3X11)													     XAllocClassHint(3X11)

NAME
       XAllocClassHint, XSetClassHint, XGetClassHint, XClassHint - allocate class hints structure and set or read a window's WM_CLASS property

SYNOPSIS
       XClassHint *XAllocClassHint()

       XSetClassHint(display, w, class_hints)
	       Display *display;
	       Window w;
	       XClassHint *class_hints;

       Status XGetClassHint(display, w, class_hints_return)
	       Display *display;
	       Window w;
	       XClassHint *class_hints_return;

ARGUMENTS
       Specifies the connection to the X server.  Specifies the XClassHint structure that is to be used.  Returns the XClassHint structure.  Spec-
       ifies the window.

DESCRIPTION
       The XAllocClassHint function allocates and returns a pointer to a XClassHint structure. Note that the  pointer  fields  in  the	XClassHint
       structure  are  initially  set  to NULL. If insufficient memory is available, XAllocClassHint returns NULL. To free the memory allocated to
       this structure, use XFree.

       The XSetClassHint function sets the class hint for the specified window. If the strings are not in the Host  Portable  Character  Encoding,
       the result is implementation dependent.

       XSetClassHint can generate BadAlloc and BadWindow errors.

       The XGetClassHint function returns the class hint of the specified window to the members of the supplied structure. 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. It returns a nonzero status on success; otherwise, it returns a zero status. To free res_name and
       res_class when finished with the strings, use XFree on each individually.

       XGetClassHint can generate a BadWindow error.

PROPERTIES
       Set by application programs to allow window and session managers to obtain the application's resources from the resource database.

STRUCTURES
       The XClassHint structure contains:

       typedef struct {
	       char *res_name;
	       char *res_class; } XClassHint;

       The res_name member contains the application name, and the res_class member contains the application class. Note that the name set in  this
       property  may differ from the name set as WM_NAME. That is, WM_NAME specifies what should be displayed in the title bar and, therefore, can
       contain temporal information (for example, the name of a file currently in an editor's buffer). On the other hand, the  name  specified	as
       part  of  WM_CLASS  is the formal name of the application that should be used when retrieving the application's resources from the resource
       database.

DIAGNOSTICS
       The server failed to allocate the requested resource or server memory.  A value for a Window argument does not name a defined Window.

SEE ALSO
       XAllocIconSize(3X11), XAllocSizeHints(3X11), XAllocWMHints(3X11), XFree(3X11), XSetCommand(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

															     XAllocClassHint(3X11)