GetBitmapBits and SetBitmapBits help

[Geky]

If I load a Bitmap from a file and I have Cbitmap and HBITMAP how is
possible to use GetBitmapBits and SetBitmapBits to modify the image
inside the memory?


BITMAP m_Bitmap; // Struct to hold info about the bitmap
HBITMAP m_hBitmap; // Handle of the bitmap


// Load the image
m_hBitmap = (HBITMAP)LoadImage(GetModuleHandle(NULL), "Image.bmp",
IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
if (m_hBitmap == NULL)
{
MessageBox("Error loading bitmap");
//return;
}
//Get information about the bitmap..
GetObject(m_hBitmap, sizeof(m_Bitmap), &m_Bitmap); // Get info about
the bitmap
// Put the bitmap into a memory device context
CPaintDC dc(this);
//get a memory dc object
CDC dcMem;
//create a compatible dc
dcMem.CreateCompatibleDC(&dc); // Select the bitmap into the in-memory
DC
//Select the bitmap into the dc
CBitmap* pOldBitmap =
dcMem.SelectObject(CBitmap::FromHandle(m_hBitmap));
............

I've tried to use GetBitmapBits and SetBitmapBits but I have a lot of
problems.


If you know a link about this question it's ok too. With a search
engine I've seen a lot of code but nothing that can solve my question.

 

[mlimber]

If I load a Bitmap from a file and I have Cbitmap and HBITMAP how is
possible to use GetBitmapBits and SetBitmapBits to modify the image
inside the memory?


BITMAP m_Bitmap; // Struct to hold info about the bitmap
HBITMAP m_hBitmap; // Handle of the bitmap


// Load the image
m_hBitmap = (HBITMAP)LoadImage(GetModuleHandle(NULL), "Image.bmp",
IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
if (m_hBitmap == NULL)
{
MessageBox("Error loading bitmap");
//return;
}
//Get information about the bitmap..
GetObject(m_hBitmap, sizeof(m_Bitmap), &m_Bitmap); // Get info about
the bitmap
// Put the bitmap into a memory device context
CPaintDC dc(this);
//get a memory dc object
CDC dcMem;
//create a compatible dc
dcMem.CreateCompatibleDC(&dc); // Select the bitmap into the in-memory
DC
//Select the bitmap into the dc
CBitmap* pOldBitmap =
dcMem.SelectObject(CBitmap::FromHandle(m_hBitmap));
...........

I've tried to use GetBitmapBits and SetBitmapBits but I have a lot of
problems.


If you know a link about this question it's ok too. With a search
engine I've seen a lot of code but nothing that can solve my question.

Hi,

This is a platform-specific question and is thus off-topic in this
forum. Try in a Microsoft newsgroup, and see the FAQ for what is
on-topic here:

http://www.parashift.com/c++-faq-lite/how-to-post.html#faq-5.9

Cheers! --M

 

[Victor Bazarov]

If I load a Bitmap from a file and I have Cbitmap and HBITMAP how is
possible to use GetBitmapBits and SetBitmapBits to modify the image
inside the memory?
[...]

You're in a wrong newsgroup. You need 'comp.os.ms-windows.programmer'
(or any in that family). You need advice on Windows API, not on C++
language. They are two different things, you know...