Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!uunet!mcvax!unido!ztivax!has
From: has@ztivax.UUCP (Hans-Albert Schneider)
Newsgroups: comp.sys.apollo
Subject: some graphic & window questions
Message-ID: <662@ztivax.UUCP>
Date: 12 Apr 89 14:14:21 GMT
Reply-To: has@ztivax.UUCP (Hans-Albert Schneider)
Organization: Siemens AG in Munich, W-Germany
Lines: 74

Hi there!

I would like to consult the net's knowledge on some problems
which arose when we did some graphics programming on our machines.
The machines are DN4000 running AEGIS SR9.7.0.3 and Unix SR9.5.
One has a 19" (1024x800 pixel) colour display, the others have
1280x1024 pixel black and white displays.

1) When a window is opened (pad_$create_window) and its upper left
   corner is specified to be at or near (0,0), it will be smaller
   than specified. The amount of pixels it is smaller seems to
   depend on the display type.
	Is this a known bug/feature/what_else? Is there a system
   call to obtain some correcting values, or could some kind
   person provide a table stating all or part of the following
   relation:
	display type - x_min/y_min - x_corr/y_corr
   where x_min/y_min are the x and y coordinates below which the
   problem occurs, and x_corr/y_corr are the correcting values?

2) The width and height of the window borders seem to depend on
   the screen. Is there a system call to retrieve them, or could
   somebody provide me a table?

3) Is there a way to label a (bordered) window? I would like to
   have some user defined text in the banner of a window, indicating
   it is a "menu", a "browser window", and so on. The label can
   change during program execution.

4) My refresh procedure is not called when a refresh is needed,
   instead, the window remains blank. (The procedure IS called
   by gpr_$acquire, as debug shows.)  I was told that it would
   be called during an event wait for mouse or keyboard input,
   but this is not satisfying.
   Here is how I declare and set the refresh procedure:

	void refresh_window(unobs,posch)
	boolean *unobs, *posch;
	{
	...
	}

	main()
	{
	status_$t st;
	gpr_$rwin_pr_t refr_window;
	gpr_$rhdm_pr_t refr_hidden;

	pad_$create_window("test",0, pad_$transcript, (short) 1, window_data,
			graphic_window, st);
	gpr_$init(gpr_$direct, graphic_window, bitmap_size, (short) 0,
			bitmap, st);

	gpr_$set_obscured_opt(gpr_$pop_if_obs,st);

	gpr_$set_auto_refresh(false,st);
	gpr_$inq_refresh_entry(refr_window, refr_hidden, st);
	gpr_$set_refresh_entry(refresh_window, refr_hidden, st);
	printf("refresh entries set\n");

	...
	}

   Is there anything wrong with this? Or did I miss something?
   From the manuals, I think it should work.


		Hans-Albert Schneider
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