sampledlg.cpp

这是书上的代码

// sampleDlg.cpp : implementation file
//

#include "stdafx.h"
#include "sample.h"
#include "sampleDlg.h"

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

#define ROP4_TRANSPARENTBLIT		0xCCAA0020
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSampleDlg dialog

CSampleDlg::CSampleDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSampleDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSampleDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSampleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSampleDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSampleDlg, CDialog)
	//{{AFX_MSG_MAP(CSampleDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_QUERYDRAGICON()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSampleDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
	
	// TODO: Add extra initialization here
	SetTimer(1,50,NULL);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSampleDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}

}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CSampleDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CSampleDlg::AnimationPic(int x1, int y1, int x2, int y2)
{
	CWnd *pWnd=GetDlgItem(IDC_STATIC_PIC);
	CDC *pDC=pWnd->GetDC();	

    BITMAP bmPlane,bmSatellite,bmBackground;
	CBitmap bitmapplane,planeMaskBitmap,bitmapsatellite,satelliteMaskBitmap,bitmapbackground;

	//加载图片
	if(!(bitmapplane.LoadBitmap(IDB_AEROPLANE)&&bitmapsatellite.LoadBitmap(IDB_SATELLITE)&&
	bitmapbackground.LoadBitmap(IDB_BACKGROUND)))
	{
		AfxMessageBox("Can not load the 3 pictures correctly!");
		return;
	}

	//获取图片大小
	bitmapplane.GetObject(sizeof(bmPlane),&bmPlane);
	bitmapsatellite.GetObject(sizeof(bmSatellite),&bmSatellite);
	bitmapbackground.GetObject(sizeof(bmBackground),&bmBackground);

	//生成CDC对象，创建与显示设备上下文兼容的内存设备上下文CDC对象
	CDC dcplane,dcsatellite,dcsatellitemask,dcbackground,dcplanemask;
	dcplanemask.CreateCompatibleDC(pDC) ;
	dcsatellitemask.CreateCompatibleDC(pDC);
	dcbackground.CreateCompatibleDC(pDC);
	dcplane.CreateCompatibleDC(pDC);
	dcsatellite.CreateCompatibleDC(pDC);

	//创建航天飞机的mask图片
    planeMaskBitmap.CreateBitmap(bmPlane.bmWidth,bmPlane.bmHeight, 1, 1, NULL ) ;
	CBitmap* OldPlaneMaskBitmap = dcplanemask.SelectObject( &planeMaskBitmap ) ;

	//创建卫星的mask图片
	satelliteMaskBitmap.CreateBitmap(bmSatellite.bmWidth,bmSatellite.bmHeight,1,1,NULL);
	CBitmap *OldSatelliteMaskBitmap=dcsatellitemask.SelectObject(&satelliteMaskBitmap);

	//将位图对象选入创建的内存设备上下文
	CBitmap *oldplane=dcplane.SelectObject(&bitmapplane);
	CBitmap *oldsatellite=dcsatellite.SelectObject(&bitmapsatellite);
	CBitmap *oldbackground=dcbackground.SelectObject(&bitmapbackground);

	//创建航天飞机的mask
	COLORREF l_crOldBack = dcplane.SetBkColor( RGB( 0, 255, 0 ) ) ;
	dcplanemask.BitBlt(0,0,bmPlane.bmWidth,bmPlane.bmHeight,&dcplane, 0, 0, SRCCOPY ) ;
	dcplane.SetBkColor( l_crOldBack ) ;

	//创建卫星的mask
	l_crOldBack = dcsatellite.SetBkColor( RGB( 0, 0, 0 ) ) ;
	dcsatellitemask.BitBlt(0,0,bmSatellite.bmWidth,bmSatellite.bmHeight,&dcsatellite, 0, 0, SRCCOPY ) ;
	dcsatellite.SetBkColor( l_crOldBack ) ;

	//加载航天飞机
    dcbackground.MaskBlt(x1,y1,bmPlane.bmWidth,bmPlane.bmHeight,&dcplane,0,0,planeMaskBitmap,0,0,ROP4_TRANSPARENTBLIT );

	//加载卫星
    dcbackground.MaskBlt(x2,y2,bmSatellite.bmWidth,bmSatellite.bmHeight,&dcsatellite,0,0,satelliteMaskBitmap,0,0,ROP4_TRANSPARENTBLIT );

	//显示图片
	pDC->BitBlt(0,0,bmBackground.bmWidth,bmBackground.bmHeight,&dcbackground,0,0,SRCCOPY);

	//释放
	dcsatellitemask.SelectObject(OldSatelliteMaskBitmap);
	dcplanemask.SelectObject(OldPlaneMaskBitmap);
	dcplane.SelectObject(oldplane);
	dcsatellite.SelectObject(oldsatellite);
	dcbackground.SelectObject(oldbackground);
}

void CSampleDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	static int x1=-128,y1=200,x2,y2,judge;
	
	if(x1<500)
		x1++;
	else
		x1=-128;
	if(y2>=320)
		judge=1;
	if(x2>=372)
		judge=2;
	if(y2<0)
		judge=3;
	if(x2<0)
		judge=0;
	switch(judge)
	{
	case 0:x2++;y2+=2;break;
	case 1:x2+=2;y2-=2;break;
	case 2:x2-=2;y2--;break;
	case 3:x2--;y2+=2;break;
	}
	AnimationPic(x1,y1,x2,y2);
	CDialog::OnTimer(nIDEvent);
}