hpux man page for xlistdepths

XListDepths()															     XListDepths()

Name
  XListDepths - determine the depths available on a given screen.

Synopsis
  int *XListDepths(display, screen_number, count_return)
	Display *display;
	int screen_number;
	int *count_return;

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

  screen_number
	    Specifies the appropriate screen number on the host server.

  count_return
	    Returns the number of depths.

Returns
  The list of depths, or NULL on failure.

Availability
  Release 4 and later.

Description
  XListDepths()  returns  the array of depths that are available on the specified screen.  If the specified screen_number is valid and suffi-
  cient memory for the array can be allocated, XListDepths() sets count_return to the number of available depths.  Otherwise, it does not set
  count_return and returns NULL.  To release the memory allocated for the array of depths, use XFree().

See Also
  XDefaultDepthOfScreen(), XDefaultDepth(), XListPixmapFormats().

Xlib - Window Manager Hints													     XListDepths()