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T O P I C R E V I E W
w2m	Posted - Jul 13 2013 : 11:22:22 Does ImageEn support using up to 4 GB memory on a Windows 7 PC with Delphi 2010 or are you limited to 2 GB memory? William Miller Adirondack Software & Graphics Email: w2m@frontiernet.net EBook: http://www.imageen.com/ebook/ Apprehend: http://www.frontiernet.net/~w2m/index.html
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fab	Posted - Jul 17 2013 : 10:02:07 Having 4 GB memory doesn't always mean you can allocate 4GB buffers. First you should look at the actually usable memory. Read this for more details about "usable" memory. http://support.microsoft.com/kb/978610 However several other factors can reduce big buffers allocation. The most frequent is the "memory fragmentation" (frequently bitmap allocations and releases). Look here: http://msdn.microsoft.com/en-us/library/windows/desktop/aa366750(v=vs.85).aspx and here: http://bugslasher.net/2011/01/15/memory-exhaustion-even-if-a-large-enough-free-memory-segment-is-available/ Anyway, if ImageEn cannot allocate a single big buffer then it allocates a set of buffers representing each row. It works only when LegacyBitmap = false and you don't use Canvases (TCanvas or TIECanvas). Of course a 64 bit OS overcomes these problems.