reading a bmp file
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Thread: reading a bmp file

  1. #1
    Join Date
    May 1999
    Location
    G day Mayt Land
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    962

    Wink reading a bmp file

    pset and point(x,y) in olden day basic used to put a pixel and read the color of a pixel ...

    I m trying to do this in VB cos i believe its easier and there must eb an easier way to do it rather than MFC.

    how do you read a BMP file
    or rather

    display it at top left hand corner or (0,0) and read its pixels

    Cheers

  2. #2
    Join Date
    Dec 2003
    Location
    Northern Ireland
    Posts
    1,362

    Re: reading a bmp file

    That depends on the type of bmp file you are reading.... firstly, you need to retrieve the header info;

    In the header info, you have things like the height and width of the image, the bit depth (eg 8, 16, 24 bit).

    These links may help:

    http://www.fortunecity.com/skyscrape.../bmpffrmt.html

    http://astronomy.swin.edu.au/~pbourke/dataformats/bmp/

    http://www.cs.uvm.edu/~erickson/educ...b_bmp/BMP.html <-- Create an image in vb)


  3. #3
    Join Date
    Dec 2001
    Posts
    6,332

    Re: reading a bmp file

    If the image is to be displayed before reading the pixel values, then you don't need to get the file header. This will also work for gif, jpeg, etc. The fastest way to do this is to use the GetPixel API call. A simple loop can iterate through the image.
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