www.pudn.com > PG20101.zip > DrawImage.cpp

// 
//	DIB Section 
// 
//		Copyright (c) 2000-2001 Chihiro.SAKAMOTO (HyperWorks) 
// 
#include "StdAfx.h" 
#include "DrawImage.h" 
#include "dc.h" 
#include "Misc.h" 
 
// 
// 建構式 
// 
CDrawImage::CDrawImage() 
	:CImage(), hBitmap(0) 
{ 
} 
 
// 
// 解構式 
// 
CDrawImage::~CDrawImage() 
{ 
	GdiFlush(); 
	if (hBitmap) { 
		::DeleteObject(hBitmap); 
	} 
} 
 
// 
// 產生DIB section 
// 
BOOL CDrawImage::Create(HDC dc, int width, int height) 
{ 
	W = width; 
	H = height; 
	D = 24; 
 
	bytes_per_line = ScanBytes(width, 24); 
	bytes_per_pixel = PixelBytes(24); 
 
	InfoHeader.biSize			= sizeof(BITMAPINFOHEADER); 
	InfoHeader.biWidth			= width; 
	InfoHeader.biHeight			= height; 
	InfoHeader.biBitCount		= 24; 
	InfoHeader.biPlanes			= 1; 
	InfoHeader.biXPelsPerMeter	= 0; 
	InfoHeader.biYPelsPerMeter	= 0; 
	InfoHeader.biClrUsed		= 0; 
	InfoHeader.biClrImportant	= 0; 
	InfoHeader.biCompression	= BI_RGB; 
	InfoHeader.biSizeImage		= bytes_per_line * height; 
 
	Info = (BITMAPINFO *)&InfoHeader; 
	hBitmap = CreateDIBSection(dc, Info, DIB_RGB_COLORS, &Bits, NULL, 0); 
 
	return hBitmap != 0; 
}