how to load images in c++

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iam a beginner in c++. iam using visual studio 2008 professional. and i have to develop my project on win32 console application but i dont know what type of code is needed to load any kind of image on the console furthermore what will be the haeder files included and what are the limitations whether an image can be loaded on the console or not....plz guide me.

Posted 27-Feb-12 7:58am

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JackDingler 27-Feb-12 14:33pm

What kind of images?

2 solutions

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Richard MacCutchan · Answer 1 · 2012-02-27T08:05:00

Solution 1

You cannot load images in console apps, you need to create a Windows app and use the various Bitmap functions to display images. You could start by adding a simple bitmap to the resources of your project and use LoadImage()[^].

Posted 27-Feb-12 8:05am

Richard MacCutchan

Comments

JackDingler 27-Feb-12 14:33pm

You can't 'display' images in the console of a console app.
But you can read them into memory.

Richard MacCutchan 27-Feb-12 14:38pm

I understand that, but I am assuming OP wants to display them.

JackDingler 27-Feb-12 14:45pm

I thought that at first, but the he/she says he/she must use a console application.

Perhaps we'll get some clarification...

Sergey Alexandrovich Kryukov 27-Feb-12 17:20pm

The only problem here is: OP did not tell us what she/he wanted to do with images.
--SA

Sergey Alexandrovich Kryukov 27-Feb-12 17:20pm

My 5, for now. :-)
--SA

Member 8231285 28-Feb-12 9:09am

bmp,jpeg,jpg,gif.... which r commonly used

Richard MacCutchan 28-Feb-12 9:26am

You still have not clarified what your problem is. Please edit your question and give some more information on what you are trying to do with the images after you have loaded them into your program.

enhzflep · Answer 2 · 2012-02-27T11:45:00

I commonly load images from console apps. Performing operations such as deskewing and colour reduction.

It's also a trivial task to display 1 bit images in the console..

I gave-up on LoadImage a looong time ago - finding that the increased number of formats supported by GDI+ was worth the transition.

Every now and again I forget to initialize GDI+, and the app crashes upon startup. Otherwise, the following function performs adequetly for my needs.

C++

// BMP, GIF, JPEG, PNG, TIFF, Exif, WMF, and EMF
HBITMAP mLoadImg(WCHAR *szFilename)
{
   HBITMAP result=NULL;

   Gdiplus::Bitmap* bitmap = new Gdiplus::Bitmap(szFilename,false);
   bitmap->GetHBITMAP(NULL, &result);
   delete bitmap;
   return result;
}

Before you use this function you must call the following init-code:

C++

static Gdiplus::GdiplusStartupInput gdiplusStartupInput;
static ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

Afterwards, you have to shut-down GDI+

C++

Gdiplus::GdiplusShutdown(gdiplusToken);

You'll need to include the gdiplus.h header file and link the gdiplus library