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Visual C++

HeartWindow.cpp：源码内容

							// HeartWindow.cpp : implementation file
//
#include "stdafx.h"
#include "HeartWindow.h"
#include "resource.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// HeartWindow
HeartWindow::HeartWindow()
{
	WNDCLASS wndcls;
	HINSTANCE hInst = AfxGetInstanceHandle();
	if(!(::GetClassInfo(hInst, HEARTWINDOW_CLASSNAME, &wndcls)))
	{
		// otherwise we need to register a new class
		wndcls.style			= CS_NOCLOSE | CS_BYTEALIGNCLIENT;
		wndcls.lpfnWndProc		= ::DefWindowProc;
		wndcls.cbClsExtra		= wndcls.cbWndExtra = 0;
		wndcls.hInstance		= hInst;
		wndcls.hIcon			= NULL;
		wndcls.hCursor			= LoadCursor( hInst, IDC_ARROW );
		wndcls.hbrBackground	= (HBRUSH)(COLOR_WINDOW); 
		wndcls.lpszMenuName		= NULL;
		wndcls.lpszClassName	= HEARTWINDOW_CLASSNAME;
		if (!AfxRegisterClass(&wndcls))
			AfxThrowResourceException();
	}
	height = width  = index = 0;
	m_hBitmap = NULL;
}
HeartWindow::~HeartWindow()
{
	if (m_hBitmap) ::DeleteObject(m_hBitmap);
}
BEGIN_MESSAGE_MAP(HeartWindow, CWnd)
	//{{AFX_MSG_MAP(HeartWindow)
	ON_WM_PAINT()
	ON_WM_ERASEBKGND()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// HeartWindow message handlers
BOOL HeartWindow::Create(const RECT& rect, HBITMAP hbmp) 
{
	// TODO: Add your specialized code here and/or call the base class
	height = rect.bottom - rect.top + 1;
	width = rect.right - rect.left + 1;
	if (hbmp == NULL) {
		hbmp = ::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_DEFAULT));
		m_hBitmap = (HBITMAP)::CopyImage(hbmp, IMAGE_BITMAP, width, height, LR_COPYDELETEORG);
	} else m_hBitmap = (HBITMAP)::CopyImage(hbmp, IMAGE_BITMAP, width, height, 0);
	DWORD dwStyle = WS_VISIBLE| WS_POPUP |WS_DISABLED; 
	DWORD dwExStyle = WS_EX_TOOLWINDOW | WS_EX_TOPMOST;
	if (! CreateEx(dwExStyle, HEARTWINDOW_CLASSNAME, NULL, dwStyle, rect, NULL, NULL, NULL)) return FALSE; 
	OnPaint();
	CClientDC dc(this);
	CRgn rgn, r;
	rgn.CreateRectRgn(0,0,width,height);
	for (int i = 0; i < width; i++)
		for (int j = 0; j < height; j++)
			if (dc.GetPixel(i,j) == RGB(255,255,255)) {
				r.CreateRectRgn(i,j,i+1,j+1);
				rgn.CombineRgn(&rgn, &r, RGN_DIFF);
				r.DeleteObject();
			}
	if (!SetWindowRgn(HRGN(rgn),TRUE)) return FALSE;
	rgn.DeleteObject();
	return TRUE;
}
void HeartWindow::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	// TODO: Add your message handler code here
	CDC dcCompatible;
	dcCompatible.CreateCompatibleDC(&dc);
	::SelectObject(dcCompatible.m_hDC,m_hBitmap);
	dc.BitBlt(0,0,width,height,&dcCompatible,0,0,SRCCOPY);
	// Do not call CWnd::OnPaint() for painting messages
}
BOOL HeartWindow::OnEraseBkgnd(CDC* pDC) 
{
	// TODO: Add your message handler code here and/or call default
	
	//return CWnd::OnEraseBkgnd(pDC);
	return TRUE;
}

						