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T O P I C R E V I E W
w2m	Posted - Jul 14 2013 : 09:12:49 I am drawing thumbnails to very large IEBitmaps and occasionally the drawing fails because the bitmap is too large. Is there a way to estimate the maximum size of a TIEBitmap so I can trap this kind of error? William Miller
3 L A T E S T R E P L I E S (Newest First)
fab	Posted - Jul 18 2013 : 14:07:03 Yes, it is better to use TIEBitmap.RenderToTIEBitmapEx. It doesn't require a canvas doing the job directly inside the buffers. It is good to use {$SetPEFlags IMAGE_FILE_LARGE_ADDRESS_AWARE}, of course, otherwise there is still the 2GB limitation.
w2m	Posted - Jul 17 2013 : 15:48:56 Are you saying that when drawing on large IEBitmaps it is better to use iIEBitmap.RenderToTIEBitmapEx(Form1.ImageEnView1.IEBitmap, x, y, iMaxX, iMaxY, 0, 0, iMaxX, iMaxY, 255, rfNone); rather than iIEBitmap.DrawToCanvas(Form1.ImageEnView1.Bitmap.Canvas, x, y); ? Does it do any good to use {$SetPEFlags IMAGE_FILE_LARGE_ADDRESS_AWARE} to provide up to a maximum of 4 GB memory in 32-Bit application? William Miller Adirondack Software & Graphics Email: w2m@frontiernet.net EBook: http://www.imageen.com/ebook/ Apprehend: http://www.frontiernet.net/~w2m/index.html
fab	Posted - Jul 17 2013 : 12:52:37 How do you draw the thumbnails? If you use TCanvas (or TIECanvas) the limitation is the same of a TBitmap. Otherwise the limitation is related to the allocable memory (see the other "2GB" topic).