how to convert bmp image to char array

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VS2008

I want to know conversion from bmp to char *arr[] using c++

XML

bitmap_type pBmp(new ClSimpleBitmap);
            std::auto_ptr<std::string> pFileName(LoadFile(TRUE
                                                         ,_T("BMP files (*.bmp)|*.bmp|PNG files (*.png)|*.png|WSQ files (*.wsq)|*.wsq|JPEG2000 files (*.jp2)|*.jp2|"
                                                         )));

pBmp->Load(pFileName->c_str())
BITMAPINFOHEADER* header=pBmp->BI();
Now I have all information of image.
Now I have image in pBmp and HEADER of image(in header). And now I want to convert it to char *arr[].

Posted 11-Jul-12 3:02am

Member 7909353

Updated 20-Apr-17 22:59pm

v5

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3 solutions

Solution 2

Yet another reference is

http://www.bobpowell.net/lockingbits.htm[^]

Posted 11-Jul-12 21:34pm

Amarnath S

Solution 4

The access to the char* or better to the byte data of your bitmap is only the first part. You must correctly interpret the BITMAPINFOHEADER to decode the data for further processing. Please read the Microsoft documentation to understand the data structure and its information. For fetching the bitmap data is the GetDibits.

Read the Bitmap Basics article to learn the needed insights. I also like the CXImage article but it is more for advanced manipulation.

Tip: play around with some simple example pics til all is runnning fine

Posted 20-Apr-17 22:59pm

KarstenK

Comments

CHill60 21-Apr-17 5:17am

Nearly 5 years old question with an accepted solution ... was it worth resurrecting?

enhzflep 28-Apr-17 4:25am

Well, given the fact that the questions and answer exist to serve the purposes of not only the asker, but also that of others with the same problem the time since the question was asked is not relevant, imho.
What is a far more important yard-stick by which to judge usefullness I think, is the quality of the answer. In my opinion, this answer surpasses the others (I've not followed the off-site links).

As such, the answer to your question is a resounding YES. Unfortunately, some miserable soul has seen fit to hit it with the down-vote hammer.

I'm curious - what are your thoughts?

CHill60 28-Apr-17 4:46am

I'm usually of the view that the external information and/or articles on the subject would appear in a(n undirected) Google search before solutions to an old post. I'm guessing the post reappeared because "Solution 3" was an inappropriate response (spam, a question or a comment).
I agree that this solution is the best here - that doesn't surprise me from KarstenK :-)
As to the down-vote - I think there is someone who just goes around the forums downvoting for the sake of it. I do downvote sometimes but I prefer to comment as to why - how else do we learn?

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Espen Harlinn · Accepted Answer · 2012-07-11T03:13:00

Solution 1

Have a look at Using LockBits in GDI+[^]

Best regards
Espen Harlinn

Posted 11-Jul-12 3:13am

Espen Harlinn

Comments

Prasad_Kulkarni 11-Jul-12 9:16am

Good reference +5

Espen Harlinn 11-Jul-12 9:16am

Thank you, Prasad :-D

Sergey Alexandrovich Kryukov 22-Jul-12 14:44pm

Good reference, a 5.
--SA

Espen Harlinn 22-Jul-12 14:47pm

Thank you, Sergey :-D