NAME
	GU_GetVisualInfoA -- Get information GadTools needs for visuals.

   SYNOPSIS
	vi = GU_GetVisualInfoA(screen, taglist)
	D0                     A0      A1

	APTR GU_GetVisualInfoA(struct Screen *, struct TagItem *);

   FUNCTION

	Get a pointer to a (private) block of data containing various bits
	of information that GadTools needs to ensure the best quality
	visuals.  Use the result in the NewGadget structure of any gadget
	you create, or as a parameter to the various menu calls.  Once the
	gadgets/menus are no longer needed (after the last CloseWindow()),
	call FreeVisualInfo().

   INPUTS
	screen - pointer to the screen you will be opening on. This parameter
		 may be NULL, in which case this function fails.
	tagList - pointer to an array of tags providing optional extra
		  parameters, or NULL.

   RESULT
	vi - pointer to private data, or NULL for failure

   NOTES
	See gadtools/GetVisualInfoA() for more information.

   SEE ALSO
	GU_FreeVisualInfo(), gadtools/FreeVisualInfo(), intuition/LockPubScreen(),
	intuition/UnlockPubScreen()

Converted on 19 Jul 1996 with RexxDoesAmigaGuide2HTML by Michael Ranner.