hpux man page for xsetclasshint

XSetClassHint() 														   XSetClassHint()

Name
  XSetClassHint - set the XA_WM_CLASS property of a window.

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

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

  w	    Specifies the ID of the window for which the class hint is to be set.

  class_hints
	    Specifies the XClassHint structure that is to be used.

Description
  XSetClassHint() sets the XA_WM_CLASS property for the specified window.  The window manager may (or may not) read this property, and use it
  to get resource defaults that apply to the window manager's handling of this application.  If the strings in class_hints  are  not  in  the
  Host Portable Character Encoding, the result is implementation-dependent.

  The  XClassHint  structure set contains res_class and res_name fields.  The res_name field contains the application name, and the res_class
  field 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 cur-
  rently 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.

  There  are several more powerful functions that set XA_WM_CLASS.  They include XSetWMProperties(), and (in R5) XmbSetWMProperties().	These
  functions read the RESOURCE_NAME environment variable if res_name is NULL, and they use argv[0]  stripped  of  any  directory  prefixes  if
  RESOURCE_NAME is not set.  XSetClassHint() only uses the explicit value of res_name.

  For more information, see Volume One, Chapter 12, Interclient Communication.

Errors
  BadAlloc
  BadWindow

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

See Also
  XAllocClassHint(),  XFetchName(),  XGetClassHint(),  XGetIconName(),	XGetIconSizes(),  XGetNormalHints(),  XGetSizeHints(), XGetTransient-
  ForHint(), XGetWMHints(), XGetZoomHints(), XSetCommand(), XSetIconName(), XSetIconSizes(),  XSetNormalHints(),  XSetSizeHints(),  XSetTran-
  sientForHint(), XSetWMHints(), XSetZoomHints(), XStoreName(), XSetWMProperties().

Xlib - Window Manager Hints													   XSetClassHint()