OS/2 Graphics Programming Questions

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2 total messages Started by Keith R. Bennett Wed, 15 Sep 1993 22:15

Author: Keith R. Bennett
Date: Wed, 15 Sep 1993 22:15

24 lines
1961 bytes

I will be porting a program from DOS to OS/2, and need to implement
some graphics drawing functions.  For example, I need to call a
function that will draw a rectangle, etc.

Can I use PM to do that?  I *don't* want my application to be event
driven in what I understand is the usual PM sense.  That is, I don't 
want the graphical objects to get any messages.  I just want to be
able to call primitive graphic functions.  Can I do this?

Also, regarding text fonts, are they scaled on the fly?  If so, does
the processor have to calculate each character as it's being displayed?
(This would seem a little dumb.)  Or is there some kind of font
cache?

Thanks for any responses.  Please reply by email if possible to:
kbennett@access.digex.net.

- Keith

-- 
--------------------------------------------------------------------------
Keith Bennett                            Bennett Business Solutions, Inc.
C++/C Software Development               1605 Ingram Terrace
kbennett@access.digex.net                Silver Spring, MD USA 20906-5932

Re: OS/2 Graphics Programming Questions

Author: Q
Date: Thu, 16 Sep 1993 11:12

30 lines
2138 bytes

In <27845c$ete@access.digex.net> kbennett@access.digex.net (Keith R. Bennett) writes:

>I will be porting a program from DOS to OS/2, and need to implement
>some graphics drawing functions.  For example, I need to call a
>function that will draw a rectangle, etc.

>Can I use PM to do that?  I *don't* want my application to be event
>driven in what I understand is the usual PM sense.  That is, I don't 
>want the graphical objects to get any messages.  I just want to be
>able to call primitive graphic functions.  Can I do this?

Yes and no.  Your window will ALWAYS receive messages but you can always
ignore them.

>Also, regarding text fonts, are they scaled on the fly?  If so, does
>the processor have to calculate each character as it's being displayed?
>(This would seem a little dumb.)  Or is there some kind of font
>cache?

The Adobe Font Manager takes care of scalable fonts, which are represented
by a serious of lines, fillets, etc..  When you scale them, they simply
scale the relative coordinates and voila.

Cheers,
Q
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