Path: utzoo!attcan!uunet!ns-mx!iowasp.physics.uiowa.edu!maverick.ksu.ksu.edu!zaphod.mps.ohio-state.edu!samsung!munnari.oz.au!murdu!ucsvc.ucs.unimelb.edu.au!wehi!baxter_a
From: BAXTER_A@wehi.dn.mu.oz
Newsgroups: comp.sys.amiga.tech
Subject: Re: Trouble with ADOS 1.3 and Fonts
Message-ID: <13693@wehi.dn.mu.oz>
Date: 2 Oct 90 14:14:59 GMT
References: <13387@wehi.dn.mu.oz> <17f70f12.ARN01888@swinjm.UUCP>
Followup-To: comp.sys.amiga.tech
Organization: Walter & Eliza Hall Institute
Lines: 50

In article <17f70f12.ARN01888@swinjm.UUCP>, forgeas@swinjm.UUCP (Jean-Michel Forgeas) writes:
> In article <13387@wehi.dn.mu.oz>, BAXTER_A@wehi.dn.mu.oz writes:
> 
>> While I'm at it, this one has had me worried for _AGES_.
>>
>> In my program, I open a font. I close it and quit. Memory counter drops
>> a bit. No deal. Flush fonts. No memory loss. Fair enough. After I run
>> the program, the font sits in memory, and takes up space.
>> [...]
>> SO: each time I run the program, I get a _new_ copy of the font in memory.
> 
> Are you opening the font with OpenDiskFont() ? This function does not
> look for previously loaded fonts in memory, but reload them from disk
> every time it is called.

Yes. That's not what my autodocs say.

> 
>> This copy doesn't come from disk (no access), it is copied from one
>> part of memory to another.
> 
> Perhaps you do not see any disk access because you are using AddBuffers,
> FaccII, DiskSpeed, or a like ?
> 

Perhaps

>> QUESTIONS: Is this a bug? Is there a special way of asking for fonts that
>> actually lets you use the one already there? Is there any salvation in
>> 2.0?
> 
> I had a problem like that and found the solution into a C= documentation
> (don't remember which one, perhaps AmigaMail), here it is:
> 
> - Do an OpenFont() to get the previously loaded font in memory
> - If successfull, compare the Y size obtained with the one you really
>   want, because if you ask Times15 and there is Times24 in memory,
>   OpenFont will succes with Times24.
> - So if you did not get what you want do an OpenDiskFont()
> 
> With this method, the opened font stays in memory, but every time you
> run your program it will find it so will not reload it.

That's more or less what I ended up with. My main problem was the use
of a font for menus/screen default. That did not work at all well unless
I did as you suggest first, then open the screen, not use the font, but
let the system find it in memory when it does screen bars/menus, close 
the screen when finished, and then close the font.

Regards Alan