Big Bitmap Viewer 1.01

By Grahame Marsh

Freeware 04 Feb 1998

In category

Components > Graphics > Bitmap Images


"This component came about because I wanted to display 4000 x 4000 x 256 colour bitmaps (about 16MB in size). Using a TBitmap and a TImage took ages to load the images as a whole load of disc-swap file activity took place. The answer was to use a memory mapped file and the StretchDIBits API call which takes a memory pointer to the bitmap data, and doesn't realise (of course) that it's a memory mapped file. Load times and resource used drastically reduced."


  • Status: Fully functional
  • Source: FW
  • Size: 7 237kB


  • Delphi 2
  • Delphi 3