saving figures

Posted on 1998-07-10
Last Modified: 2013-11-19
I want to save a file which contains certain fiures, both regular and random. I want to save the regular figures by saving their pattern but the random figures cannot be saved in this manner, they have to be saved by some other method say using bitmaps. But a single file can contain both regular as well as random figures and I want to save these figures as a single file. What can be done?
Question by:Abbas071098
  • 3
  • 2

Expert Comment

ID: 1318978
well assuming you know how to change your random figures in to bitmaps...saving is a snap.  Since The CBitmap object is inherited from CObject you can just use its serialize function.  Also Assuming all you data is in the document you just need to override the document's serialze function:

void CMyDocDoc::Serialize(CArchive& ar)
      if (ar.IsStoring())

      CMyRegularListofPoints.Serialize(ar);///assuming some sort of list or you could use the braces up above in Isstoringex:  ar<<point1<<point2....ect or in the>>point1>>point2


if you need more detail comment here

Author Comment

ID: 1318979
bfwizard, the solution that you told me, will it save the two types of figures in two different files. And if in the the same file what will be the file format. My problem is I don't want to save the regular figure as the bitmap but as a metafile. But there should be only one file as output (saved) file.

Expert Comment

ID: 1318980
Why not create a special header that has a flag for bitmap follows or not.

in the header if a bitmap follows, you just set the flag.
if a bitmap doesn't follow you don't set the flag.

Then in the header you store the length of the 'object'

When writing you make a header, append header to file, then append data to file.

When reading, you read a header,
   if its a bitmap you load it as a bitmap.
   if its not a bitmap, you load it and then do your processing.

You can use the fread and fwrite to accomplish this task....  with these functions you can load from a file directly into a structure and store from a structure directly to a file.

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.


Author Comment

ID: 1318981
I want different types of figures to be stored in the same file sorry I am not getting the correct answer so I am gonna delete the question

Expert Comment

ID: 1318982
The answer I gave you would have permitted you to store different types of figures in the same file.  It allowed multiple objects within a file with each object having its own header.


Accepted Solution

duneram earned 50 total points
ID: 1318983
here is an example

    short type;
    long length;
} hdr;

Setting hdr.type to 1 would mean one thing.

setting hdr.type to 2 would be for a different type of object.

In your single file you would place these objects back to back.
like this:

obj 1
obj 2
obj 3

each hdr would have  a  specific type and you would use the method for the type to properly decode the binary information into the right format.


Featured Post

Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

Join & Write a Comment

Introduction: The undo support, implementing a stack. Continuing from the eigth article about sudoku.   We need a mechanism to keep track of the digits entered so as to implement an undo mechanism.  This should be a ‘Last In First Out’ collec…
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now