home *** CD-ROM | disk | FTP | other *** search
- Path: news.transport.com!usenet
- From: rmashlan@r2m.com (Robert Mashlan)
- Newsgroups: comp.graphics.algorithms,comp.lang.c++,comp.os.ms-windows.programmer.graphics,comp.os.ms-windows.programmer.multimedia,comp.os.ms-windows.programmer.win32
- Subject: Re: IJG JPEG Engine and Win32
- Date: Mon, 29 Jan 1996 23:53:40 GMT
- Organization: R2M Software Company
- Message-ID: <310d5a9f.41441673@news.transport.com>
- References: <4cemir$6vb@redstone.interpath.net> <TGL.96Jan3202549@netcom21.netcom.com> <TGL.96Jan5065424@netcom21.netcom.com> <4cpn1r$gm0@redstone.interpath.net> <4crai5$ear@hades.rz.uni-sb.de> <4d11tg$56q@redstone.interpath.net> <310110c0.44581633@news.connectnet.com> <4dt42n$pu3@redstone.interpath.net>
- NNTP-Posting-Host: sea13.seasurf.com
- X-Newsreader: Forte Agent .99c/16.141
-
- fortunat@interpath.com (Jumpstile Turner) wrote:
-
-
- >>Are you sure that GlobalAlloc doesn't wind up calling
- >>
- >
- > You didnt finish this line. I assume you mean GlobalAlloc doesn't
- >wind up calling HeapAlloc? As far as I understand GlobalAlloc still
- >calls 16-bit memory rather than 32-bit memory. I could be wrong, but
- >in one of my Win32 books floating around here it states that Win95
- >Explorer still uses GlobalAlloc to allocate memory for "Drag and Drop"
- >data structures and that this is 16-bit RAM it is allocating. It also
- >states that GlobalAlloc is much slower than using HeapAlloc or
- >VirtualAlloc. I haven't tested this much, but it sure SEEMS slower
- >when I switch HeapAlloc calls to GlobalAlloc. Although this might be
- >the power of suggestion. :) However I've read this in more than one
- >place so I'd just assume it was correct.
-
- In Win32, GlobalAlloc and LocalAlloc are the same function. They
- allocate memory from the process' 32-bit heap. There is a difference
- between HeapAlloc for backard compatibility in that LMEM_MOVEABLE
- allocated handles are doubly indirect pointers (void **) to the
- memory.
-
- See Peitrek's "Windows 95 Programming Secrets" for more info.
-
- rm
-
-
-
-
-
- ---
- Robert Mashlan | R2M Software
- rmashlan@r2m.com http://www.transport.com/~rmashlan
- Internet Resources for Windows Developers
- http://www.r2m.com/windev/
-