Re: DIB?GDI?

From:

"Mark Salsbery [MVP]" <MarkSalsbery[MVP]@newsgroup.nospam>

Newsgroups:

microsoft.public.vc.language

Date:

Thu, 13 Mar 2008 11:40:52 -0700

Message-ID:

<FBDB75CB-1422-42D1-975B-DD27EFA58299@microsoft.com>

"Lucress Carol" <incognito.me@gmx.de> wrote in message
news:4cabe460-4cdf-4589-b402-4f03eb4718de@b1g2000hsg.googlegroups.com...

hi everyone,

I've started working with MFC von VC++ and there are a few points,
which make me feel confused.GDI(Graphics Device Interface) Bitmaps are
supported in MFC by CBitmap Class right? and a DIB ist a Device
independent Bitmap.So good so far.Now a question which may seem
obvious for some of you:How do I know if I'm handling with a GDI
Bitmap or a DIB?My thought was that loading the Bitmap as resource in
a Dialog makes the Bitmap become a GDI Bitmap(so I could use the
functions LoadBitmap,CreateCompatibleDC,SelectObject,etc...) and If I
don't I'm handling with DIB.the next question is which functions are
supported by the DIB?(I guess the member functions of this class named
CDib?).
Thank you

A device independent bitmap (DIB) is a BITMAPINFO structure with a possible
color table and an array of pixel data bits.

The shared CImage class wraps a DIB in an MFC-like way, although it's no
longer just an MFC class.

More info on the difference between the two types of bitmaps can be found
here:
http://msdn2.microsoft.com/en-us/library/ms532357(VS.85).aspx

Mark

--
Mark Salsbery
Microsoft MVP - Visual C++