readme.wzd

来自「《vc++扩展编程实例》源码。运用Visual C++ 5.0或6.0的高级编程」· WZD 代码 · 共 40 行

/////////////////////////////////////////////////////////////////////
// Example files.
/////////////////////////////////////////////////////////////////////

WzdBtmap.cpp -- a bitmap class which will create a new stretched bitmap
WzdBtmap.h			of its contents


/////////////////////////////////////////////////////////////////////
// Modify any class that owns a window.
/////////////////////////////////////////////////////////////////////

// 1) create a stretched bitmap using the bitmap class above
	CRect rect;
	GetClientRect(&rect);
	CBitmap *pBitmap=m_bitmap.Stretch(rect.Width(),rect.Height(),
						COLORONCOLOR);
			// also HALFTONE	-- slower but attempts to averge colors
			// BLACKONWHITE		-- monotone--scacrifices white for black pixels
			// WHITEONBLACK		-- monotone--sacrifices black for white pixels

	// if you use HALFTONE, must also call the following next to realign the brush
	::SetBrushOrgEx( pDC->m_hDC, 0,0, NULL);


// 2) draw the stretched bitmap to the window
	CDC dcComp;
	dcComp.CreateCompatibleDC(pDC);
	dcComp.SelectObject(pBitmap);
	pDC->BitBlt(0,0,rect.Width(),rect.Height(), &dcComp, 0,0,SRCCOPY);

// 3) destroy created, stretched bitmap
	delete pBitmap;

/////////////////////////////////////////////////////////////////////
// From: Visual C++ MFC Programming by Example by John E. Swanke
// Copyright (C) 1999 jeswanke. All rights reserved.
/////////////////////////////////////////////////////////////////////