CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com

Search:

Type: Posts; User: raywu2005

Search: Search took 0.01 seconds.

  1. Replies
    0
    Views
    5,254

    how to use libpng?

    hi all,
    I want to know how to use libpng.

    when I tried to use the example.c , I got some linker error( I am using gc++).
    ex:
    [Linker error] undefined reference to `png_sig_cmp'
    [Linker...
  2. Replies
    8
    Views
    2,969

    Re: image processing with PNG in C++

    hi ,
    thanks for your reply.

    I have read libpng and zlib .
    I get a question. can I just use zlib to decompress and compress IDAT chunks from my codes? or I have to use both libpng and zlib ?
    ...
  3. Replies
    8
    Views
    2,969

    Re: image processing with PNG in C++

    hi,
    I have read through the specification, but I still cannot understand how to do it ( sorry! poor English)

    if the image is compression = 0 & filter =0 ,
    the IDAT chunk length is 8192...
  4. Replies
    8
    Views
    2,969

    Re: image processing with PNG in C++

    my program can read PNG files and save it into another file.
    I want to do some changes in the file
    eg. change colours , grayscale ...etc

    how to do it?? which data/chunk is used in here?

    ...
  5. Replies
    8
    Views
    2,969

    image processing with PNG in C++

    Hi all,
    I am writing a image processing program by using PNG files.
    what I have done is reading chunks into my program and output to another files ( identical images)
    But, I have a problem now, ...
  6. Replies
    4
    Views
    580

    Re: dynamatic array size

    oh! yes
    I forget the " vector"

    thanks
  7. Replies
    4
    Views
    580

    dynamatic array size

    hi
    I have a question about array size.
    in my code, there is an array which size is depending on a variable.
    I declare it as a point and then new the size to it.

    if I use fixed size then there...
Results 1 to 7 of 7





Click Here to Expand Forum to Full Width

Featured