Article View: comp.windows.ms.programmer
Article #945Re: Windows 3 segment/selector problems (Tech. Quest.)
From: Morris Jones
Date: Thu, 20 Dec 1990 22:51
Date: Thu, 20 Dec 1990 22:51
26 lines
1805 bytes
1805 bytes
jason@media-lab.media.mit.edu (Jason A. Kinchen) writes: > Has anyone solved the problem >of dynamically, globally alloc'ing an arbitrarily long block of memory >when you don't know in advance if it's longer than 64K? Do you have >to compile huge model or something nasty like that? Here's one option if you're on a 386: See Appendix E of the SDK manual. Use the function Global32Alloc. The selector you get back well be a USE32 selector, thus requiring a 32-bit offset. Now the problem comes in referencing all that memory from a 16-bit program. You can get 16-bit pointers into the memory using Global16PointerAlloc, but each pointer will be limited to a 64K segment of space. If you write some assembler, you can reference the memory using the 32-bit registers, or other bits of 386-specific code. Just some food for thought ... Mojo -- mojo@netcom.UUCP Site Coordinating Instructor, San Jose South Morris "Mojo" Jones Skilled Motorcycling And Rider Training (S.M.A.R.T.) Campbell, CA 800-675-5559 ... 800-CC-RIDER ... 408-423-2212 AA4KB @ N6LDL.#NOCAL.CA.USA.NA / aa4kb.ampr.org / netcom!mojo@apple.com
Technical Details
Message-ID:
<19201@netcom.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!apple!netcom!mojoReferences:
<588@rodan.cs.utexas.edu> <1990Dec19.194631.22880@progress.com> <4563@media-lab.MEDIA.MIT.EDU>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!apple!netcom!mojo
From: mojo@netcom.UUCP (Morris Jones)
Newsgroups: comp.windows.ms.programmer
Subject: Re: Windows 3 segment/selector problems (Tech. Quest.)
Keywords: windows-3 selectors 80286 80386
Message-ID: <19201@netcom.UUCP>
Date: 20 Dec 90 22:51:10 GMT
References: <588@rodan.cs.utexas.edu> <1990Dec19.194631.22880@progress.com> <4563@media-lab.MEDIA.MIT.EDU>
Distribution: comp
Organization: Netcom- The Bay Area's Public Access Unix System {408 241-9760 guest}
Lines: 26