//??dibapi.cpp
//??Download?by?http://www.codefans.net
//??Source?file?for?Device-Independent?Bitmap?（DIB）?API.??Provides
//??the?following?functions:
//
//??PaintDIB（）??????????-?Painting?routine?for?a?DIB
//??CreateDIBPalette（）??-?Creates?a?palette?from?a?DIB
//??FindDIBBits（）???????-?Returns?a?pointer?to?the?DIB?bits
//??DIBWidth（）??????????-?Gets?the?width?of?the?DIB
//??DIBHeight（）?????????-?Gets?the?height?of?the?DIB
//??PaletteSize（）???????-?Gets?the?size?required?to?store?the?DIB‘s?palette
//??DIBNumColors（）??????-?Calculates?the?number?of?colors
//????????????????????????in?the?DIB‘s?color?table
//??CopyHandle（）????????-?Makes?a?copy?of?the?given?global?memory?block
//
//?This?is?a?part?of?the?Microsoft?Foundation?Classes?C++?library.
//?Copyright?（C）?1992-1998?Microsoft?Corporation
//?All?rights?reserved.
//
//?This?source?code?is?only?intended?as?a?supplement?to?the
//?Microsoft?Foundation?Classes?Reference?and?related
//?electronic?documentation?provided?with?the?library.
//?See?these?sources?for?detailed?information?regarding?the
//?Microsoft?Foundation?Classes?product.

#include?“stdafx.h“
#include?“dibapi.h“
#include?
#include?
#include?
#include?

/*
?*?Dib?Header?Marker?-?used?in?writing?DIBs?to?files
?*/
#define?DIB_HEADER_MARKER???（（WORD）?（‘M‘?<
/*************************************************************************

??Function:??ReadDIBFile?（CFile&）

???Purpose:??Reads?in?the?specified?DIB?file?into?a?global?chunk?of
			?memory.

???Returns:??A?handle?to?a?dib?（hDIB）?if?successful.
			?NULL?if?an?error?occurs.

??Comments:??BITMAPFILEHEADER?is?stripped?off?of?the?DIB.??Everything
			?from?the?end?of?the?BITMAPFILEHEADER?structure?on?is
			?returned?in?the?global?memory?handle.

*************************************************************************/


HDIB?WINAPI?ReadDIBFile（LPCTSTR?pszFileName?）
{
	BITMAPFILEHEADER?bmfHeader;
	DWORD?dwBitsSize;
	HDIB?hDIB;
	LPSTR?pDIB;
	HANDLE?hFile;
	DWORD?nBytesRead;

	/*
	?*?get?length?of?DIB?in?bytes?for?use?when?reading
	?*/
	hFile?=??CreateFile（
	pszFileName????//?pointer?to?name?of?the?file
	GENERIC_READ???//?access?（read-write）?mode
	FILE_SHARE_READ????//?share?mode
	NULL???//?pointer?to?security?descriptor
	OPEN_EXISTING??//?how?to?create
	FILE_ATTRIBUTE_NORMAL??//?file?attributes
	NULL????//?handle?to?file?with?attributes?to?copy
???）;


	dwBitsSize?=?GetFileSize（hFileNULL）;

	/*
	?*?Go?read?the?DIB?file?header?and?check?if?it‘s?valid.
	?*/
	//?attempt?an?asynchronous?read?operation
	if（!?ReadFile（hFile?（LPSTR）&bmfHeader?sizeof（bmfHeader）?&nBytesRead
		?NULL））
		return?NULL;

	if?（bmfHeader.bfType?!=?DIB_HEADER_MARKER）
		return?NULL;

	/*
	?*?Allocate?memory?for?DIB
	?*/
	hDIB?=?（HDIB）?::GlobalAlloc（GMEM_MOVEABLE?|?GMEM_ZEROINIT?dwBitsSize）;
	if?（hDIB?==?0）
	{
		return?NULL;
	}
	pDIB?=?（LPSTR）?::GlobalLock（（HGLOBAL）?hDIB）;

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
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???????????????151969????????????????????33