what's the difference between GdipBitmapLockBits and CreateDIBSection

Posted by Naveen on Stack Overflow See other posts from Stack Overflow or by Naveen
Published on 2010-06-08T16:18:20Z Indexed on 2010/06/08 16:22 UTC
Read the original article Hit count: 198

Filed under:

win32

|

bitmap

|

gdiplus

GdipBitmapLockBits works on pBitmaps, requires locking ?
CreatDIBSection gives you a DIBsection, doesn't require locking ?

which method is better for working with raw pixel data ?
Here are two implementations for finding the difference between two images using each method.

© Stack Overflow or respective owner

Related posts about win32

RuntimeError: maximum recursion depth exceeded while calling a Python object

as seen on Stack Overflow - Search for 'Stack Overflow'
this error arises when i try to run the following test case which is written in models.py of my django app named 'administration' : from django.test import Client, TestCase from django.core import mail class ClientTest( TestCase ): fixtures = [ 'testdata.json' ] def test_get_register(… >>> More
How do I poke the flag in a win32 PE that controls console window display

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an executable which is part of a batch process. This one executable opens a console window, which is annoying since it's useless to the end user and steals focus away from their active task. We can't compile a new version from of this EXE from source (easily). Is there an easy way to twiddle… >>> More
Keyboard Input & the Win32 message loop

as seen on Stack Overflow - Search for 'Stack Overflow'
How do I handle key presses and key up events in the windows message loop? I need to be able to call two functions OnKeyUp(char c); and OnKeyDown(char c);. Current literature I've found from googling has lead me to confusion over WM_CHAR or WM_KEYUP and WM_KEYDOWN, and is normally targeted at PDA… >>> More
Invalid algorithm specified on Windows 2003 Server only

as seen on Stack Overflow - Search for 'Stack Overflow'
I am decoding a file using the following method: string outFileName = zfoFileName.Replace(".zfo", "_tmp.zfo"); FileStream inFile = null; FileStream outFile = null; inFile = File.Open(zfoFileName, FileMode.Open); outFile = File.Create(outFileName); LargeCMS.CMS cms = new LargeCMS.CMS(); cms.Decode(inFile… >>> More
How to Compile Mod_Python 3.3.1 for Python 2.6 and Apache 2.2 on Windows?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have no experience compiling code other than using Visual Studio's Build command. I am hoping we can create a step by step guide for compiling mod_python on windows. Please be as descriptive as possible. This is what I've done so far: Download and install python 2.6.2 Download and install apache… >>> More

Related posts about bitmap

When constructing a Bitmap with Bitmap.FromHbitmap(), how soon can the original bitmap handle be del

as seen on Stack Overflow - Search for 'Stack Overflow'
From the documentation of Image.FromHbitmap() at http://msdn.microsoft.com/en-us/library/k061we7x%28VS.80%29.aspx : The FromHbitmap method makes a copy of the GDI bitmap; so you can release the incoming GDI bitmap using the GDIDeleteObject method immediately after creating the new Image. This… >>> More
Finding a Bitmap contained inside another Bitmap

as seen on Code Project - Search for 'Code Project'
A method to look for a small Bitmap that is contained inside a bigger Bitmap. >>> More
Use native HBitmap in C# while preserving alpha channel/transparency. Please check this code, it works on my computer...

as seen on Stack Overflow - Search for 'Stack Overflow'
Let's say I get a HBITMAP object/handle from a native Windows function. I can convert it to a managed bitmap using Bitmap.FromHbitmap(nativeHBitmap), but if the native image has transparency information (alpha channel), it is lost by this conversion. There are a few questions on Stack Overflow regarding… >>> More
trying to make this code less messy in android, can anyone help?

as seen on Stack Overflow - Search for 'Stack Overflow'
i know that there must be a simpler way of doing this, i just don't understand how java works well enough, and i am struggling. could someone perhaps point me in the right direction? ImageButton image = (ImageButton) findViewById(R.id.card1); ImageButton image2 = (ImageButton) findViewById(R… >>> More
Bitmap byte-size after decoding?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi! How can I determine/calculate the byte size of a bitmap (after decoding with BitmapFactory)? I need to know how much memory space it occupies, because I'm doing memory caching/management in my app. (file size is not enough, since these are jpg/png files) Thanks for any solutions! >>> More