animatedrawdlg.cpp

一个在EVC下写的动画显示程序

// AnimateDrawDlg.cpp : implementation file
//

#include "stdafx.h"
#include "AnimateDraw.h"
#include "AnimateDrawDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAnimateDrawDlg dialog

CAnimateDrawDlg::CAnimateDrawDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CAnimateDrawDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CAnimateDrawDlg)
	m_iValue = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CAnimateDrawDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAnimateDrawDlg)
	DDX_Text(pDX, IDC_EDIT_Value, m_iValue);
	DDV_MinMaxInt(pDX, m_iValue, 0, 1);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAnimateDrawDlg, CDialog)
	//{{AFX_MSG_MAP(CAnimateDrawDlg)
	ON_WM_PAINT()
	ON_WM_ERASEBKGND()
	ON_EN_CHANGE(IDC_EDIT_Value, OnChangeEDITValue)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAnimateDrawDlg message handlers

BOOL CAnimateDrawDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}



void CAnimateDrawDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
//得到窗口绘图环境
//	CClientDC dc(this);
	//定义离屏绘图环境
	CDC offDC;
	//定义离屏位图
	CBitmap offBitmap;

	//创建离屏环境
	offDC.CreateCompatibleDC(&dc);
	offBitmap.CreateCompatibleBitmap(&dc,46,57);
	offDC.SelectObject(&offBitmap);

	//定义位图绘制环境
	CDC bmpDC;
	CBitmap aniBmp;
	//加载位图
	aniBmp.LoadBitmap(IDB_BMP_ANIMATE);
	bmpDC.CreateCompatibleDC(&offDC);
    bmpDC.SelectObject(aniBmp);

	//循环显示位图，形成动画效果
	if (m_iValue == 1) {
		for(int nCnt=0; nCnt<4; nCnt++)
		{
			//设置离屏环境为纯白色
			offDC.PatBlt(0, 0, 46, 57, WHITENESS);
			//绘制位图到离屏绘图环境中
			TransparentImage(offDC.m_hDC,nCnt*4,0,46,57,bmpDC.m_hDC,nCnt*46,0,46,57, RGB(255,0,255));
			//将离屏绘图环境绘制到实际窗口绘图环境
			dc.BitBlt(0,0,46,57,&offDC,0,0,SRCCOPY);
			Sleep(100);
		}
	}
	else{
		int nCnt = 0 ;
		offDC.PatBlt(0, 0, 46, 57, WHITENESS);
		//绘制位图到离屏绘图环境中
		TransparentImage(offDC.m_hDC,nCnt*4,0,46,57,bmpDC.m_hDC,nCnt*46,0,46,57, RGB(255,0,255));
		//将离屏绘图环境绘制到实际窗口绘图环境
		dc.BitBlt(0,0,46,57,&offDC,0,0,SRCCOPY);
		Sleep(100);
	}
	if (m_iValue == 1) {
		for(int nCnt=0; nCnt<4; nCnt++)
		{
			//设置离屏环境为纯白色
			offDC.PatBlt(0, 0, 46, 57, WHITENESS);
			//绘制位图到离屏绘图环境中
			TransparentImage(offDC.m_hDC,nCnt*4,0,46,57,bmpDC.m_hDC,nCnt*46,0,46,57, RGB(255,0,255));
			//将离屏绘图环境绘制到实际窗口绘图环境
			dc.BitBlt(0,60,46,57,&offDC,0,0,SRCCOPY);
			Sleep(100);
		}
	}
	else{
		int nCnt = 0 ;
		offDC.PatBlt(0, 0, 46, 57, WHITENESS);
		//绘制位图到离屏绘图环境中
		TransparentImage(offDC.m_hDC,nCnt*4,0,46,57,bmpDC.m_hDC,nCnt*46,0,46,57, RGB(255,0,255));
		//将离屏绘图环境绘制到实际窗口绘图环境
		dc.BitBlt(0,60,46,57,&offDC,0,0,SRCCOPY);
		Sleep(100);
	}
	//删除位图GDI对象
	aniBmp.DeleteObject();
	//删除位图绘制环境
	bmpDC.DeleteDC();
	//删除离屏位图GDI对象
	offBitmap.DeleteObject();
	//删除离屏绘图环境
	offDC.DeleteDC();
	
	Invalidate();
}

void CAnimateDrawDlg::OnChangeEDITValue() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(TRUE) ;
}
BOOL CAnimateDrawDlg::OnEraseBkgnd(CDC* pDC) 
{
	return TRUE ;
}