关于BMP文件的问题

[llm308]

各位高手，有谁会编一个显示BMP文件的程序（即通过BMP文件内容一个像素一个象素的显示）。如果有源代码一定高分相送，谢谢！！！

[fireseed]

/*********************感谢关注************************/
//////////////////////Creamdog/////////////////////////

以下代码摘自我用API写的一个CDib类。如果需要全部代码请在给我的留言中留下你的e-mail，并附上你的问题。

BOOL CDib::ReadFileSection(HANDLE hFile,
LPVOID lpBuffer,
DWORD Offset,
DWORD nNumberOfByteRead)
{
BOOL result = TRUE;
DWORD dwNumberReaded;
LPOVERLAPPED lpOverlapped=new OVERLAPPED;

lpOverlapped->hEvent=0;
lpOverlapped->Offset=Offset;
lpOverlapped->OffsetHigh=0;

result = ReadFile(hFile, //Read date from the file
lpBuffer,
nNumberOfByteRead, //nFileSize
&dwNumberReaded,
lpOverlapped
);

delete lpOverlapped;

return result;
}

BOOL CDib::WriteFileSection(HANDLE hFile,
LPVOID lpBuffer,
DWORD Offset,
DWORD nNumberOfByteWrite)
{
BOOL result = TRUE;
DWORD dwNumberWrited;
LPOVERLAPPED lpOverlapped=new OVERLAPPED;

lpOverlapped->hEvent=0;
lpOverlapped->Offset=Offset;
lpOverlapped->OffsetHigh=0;

result = WriteFile(hFile, //Read date from the file
lpBuffer,
nNumberOfByteWrite, //nFileSize
&dwNumberWrited,
lpOverlapped
);

delete lpOverlapped;

return TRUE;

}

BOOL CDib::LoadBitmapFile(LPCTSTR lpFileName)
{
BOOL result;
DWORD nDataSize;
HANDLE hFile;

//Create a file
hFile = CreateFile(lpFileName,
GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED,
NULL);

//Read file header
result = ReadFileSection(hFile,(LPVOID)&m_FileHeader,0,sizeof(BITMAPFILEHEADER));
if(m_FileHeader.bfType!='MB' || !result)
return FALSE;


//Read info header
nDataSize = m_FileHeader.bfOffBits - sizeof(BITMAPFILEHEADER);
result = ReadFileSection(hFile,(LPVOID)&m_Info,sizeof(BITMAPFILEHEADER),nDataSize);
if( !result )
return FALSE;

//Read image data
nDataSize = GetFileSize( hFile, NULL );
nDataSize = nDataSize - m_FileHeader.bfOffBits;
m_lpImageData = new char[nDataSize];
result = ReadFileSection( hFile, m_lpImageData, m_FileHeader.bfOffBits, nDataSize );
if( !result )
return FALSE;

return TRUE;
}


BOOL CDib::SaveTo( LPCTSTR lpFileName)
{
BOOL result;
DWORD nDataSize;
HANDLE hFile;

//Create a file
hFile = CreateFile(lpFileName,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED,
NULL);

//写文件头
result = WriteFileSection(hFile,(LPVOID)&m_FileHeader,0,sizeof(BITMAPFILEHEADER));
if(m_FileHeader.bfType!='MB' || !result)
return FALSE;


//写信息头
nDataSize = m_FileHeader.bfOffBits - sizeof(BITMAPFILEHEADER);
result = WriteFileSection(hFile,(LPVOID)&m_Info,sizeof(BITMAPFILEHEADER),nDataSize);
if( !result )
return FALSE;

//写DIB数据
nDataSize = m_Info.bmiHeader.biSizeImage;
result = WriteFileSection( hFile, m_lpImageData, m_FileHeader.bfOffBits, nDataSize );
if( !result )
return FALSE;

return TRUE;
}

BOOL CDib::Create( LPCTSTR lpFileName, HDC hdc )
{
//重置所有信息
Reset();

//处理DC
m_hdc = hdc;
m_nDCState = SaveDC(m_hdc);

//读取BMP文件
if( !LoadBitmapFile(lpFileName) )
return FALSE;

//输出位图
UpdateObject(NULL);

return TRUE;
}

[guopo]

give me your email.
this sourcecode can only display 256 gray bitmap,
do you want to have?

[guopo]

i will give u the whole code.
not CDib,but a winapi lib,if you want leave ur email box.
i will send to u as soon as possible.

[llm308]

谢谢了！！！
[e-mail]

[fireseed]

/*************************感谢关注************************/
//////////////////////////Creamdog/////////////////////////

发了，别忘了给我加分。再7分我就三颗小三解了，呵呵，七分就行，不过你要全给我也不介意.....

[蒋晟]

http://www.csdn.net/Develop/article/12/12866.shtm

[guopo]

THE MAIL SENT,PLEASE CHECK,PLEASE READ README.TXT FIRST.

[aawolf]

hehe

[Holly]

建议你不要使用Creamdog的程序，那有缺陷，还不能认识所有的BMP格式，我敢保证OS/2格式的BMP将导致程序崩掉。（很遗憾，网络上的大多数读取BMP的程序都有这个缺陷，相信都是因为是学习过程中的非产品化代码，不可靠）
jiangsheng的也许可以，但我没有试过。

如果你有需要的话，建议你完整了解一下BMP的头结构，你就知道为何CreamDog的代码有缺陷了。

[AloneWolf]

以前用DirectX时看见过，很复杂，因为bmp有256色、16位色和24位色等，而
当前显示环境也有256色、16位色和24位色等，从每种bmp画到每种显示环境的
函数都是不同的。