mywnd.cpp

此书包含了大量的VC程序源代码,对于学习者来说是非常重要的,看后大家对VC将会有质的提高.非常经典.

// MyWnd.cpp : implementation file
//

#include "stdafx.h"
#include "MyScreensaver.h"
#include "MyWnd.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyWnd
#define ID_TIMER WM_USER+1000
CMyWnd::CMyWnd()
{
	m_prePoint=CPoint(-1,-1);
}
CMyWnd::~CMyWnd()
{
}

BEGIN_MESSAGE_MAP(CMyWnd, CWnd)
	//{{AFX_MSG_MAP(CMyWnd)
	ON_WM_PAINT()
	ON_WM_KEYDOWN()
	ON_WM_LBUTTONDOWN()
	ON_WM_MBUTTONDOWN()
	ON_WM_MOUSEMOVE()
	ON_WM_RBUTTONDOWN()
	ON_WM_SYSKEYDOWN()
	ON_WM_DESTROY()
	ON_WM_TIMER()
	ON_WM_ACTIVATE()
	ON_WM_ACTIVATEAPP()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
LPCSTR CMyWnd::lpszClassName=NULL;
BOOL CMyWnd::Create()
{

	if(lpszClassName==NULL)
	{
		lpszClassName=AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW,
			::LoadCursor(AfxGetResourceHandle(),MAKEINTRESOURCE(IDC_NOCURSOR)));
		//注册类；IDC_NOCURSOR为新建光标的ID，这个光标没有任何图案
	}
	CRect rect(0, 0, ::GetSystemMetrics(SM_CXSCREEN),
		::GetSystemMetrics(SM_CYSCREEN));
	CreateEx(WS_EX_TOPMOST, lpszClassName, _T(""), WS_VISIBLE|WS_POPUP,
		rect.left,rect.top,rect.right - rect.left, rect.bottom - rect.top,
		GetSafeHwnd(), NULL, NULL); //创建一个全屏窗口
	SetTimer(ID_TIMER, 500, NULL);//计时器，ID_TIMER别忘了定义

	return TRUE;
}
//为了防止同时运行两个相同的程序，下面两个函数是必需的
void CMyWnd::OnActivate(UINT nState, CWnd* pWndOther, BOOL bMinimized)
{
	CWnd::OnActivate(nState,pWndOther,bMinimized);
	if(nState==WA_INACTIVE)
		PostMessage(WM_CLOSE);
}
void CMyWnd::OnActivateApp(BOOL bActive, HTASK hTask)
{
	CWnd::OnActivateApp(bActive, hTask);
	if(!bActive) //is being deactivated
		PostMessage(WM_CLOSE);
}
//OnPaint()函数将全屏窗口置为黑色
void CMyWnd::OnPaint()
{
	CPaintDC dc(this);
	CBrush brush(RGB(0,0,0));
	CRect rect;
	GetClientRect(rect);
	dc.FillRect(&rect,&brush);
}
//由计数器调用DrawBitmap()函数，切换图片；
//注意，下面两个函数中的IDB_BITMAP1, dc.BitBlt(0,0,800,600……以及if(nIndexBit>=5)中的
//有关数据依据你的bmp图片个数、尺寸、位置不同而不同，我是选择了5张
//800x600的bmp图片。注意，ID值是连续的，IDB_BITMAP1最小
void CMyWnd::DrawBitmap(CDC& dc, int nIndexBit)
{
	CDC dcmem;
	dcmem.CreateCompatibleDC(&dc);
	CBitmap m_Bitmap;
	m_Bitmap.LoadBitmap(IDB_BITMAP1+nIndexBit);
	dcmem.SelectObject(m_Bitmap);
	dc.BitBlt(0,0,800,600,&dcmem,0,0,SRCCOPY);
}
void CMyWnd::OnTimer(UINT nIDEvent)
{
	CClientDC dc(this);
	static nIndexBit=0;
	if(nIndexBit>=5)
		nIndexBit=0;
	DrawBitmap(dc, nIndexBit++);
	CWnd::OnTimer(nIDEvent);
}
//响应键盘、鼠标是屏幕保护程序不可缺少的
void CMyWnd::OnKeyDown(UINT nChar,UINT nRepCnt,UINT nFlags)
{
	PostMessage(WM_CLOSE);
}
void CMyWnd::OnLButtonDown(UINT nFlags,CPoint point)
{
	PostMessage(WM_CLOSE);
}
void CMyWnd::OnMButtonDown(UINT nFlags,CPoint point)
{
	PostMessage(WM_CLOSE);
}
void CMyWnd::OnRButtonDown(UINT nFlags,CPoint point)
{
	PostMessage(WM_CLOSE);
}
void CMyWnd::OnSysKeyDown(UINT nChar,UINT nRepCnt,UINT nFlags)
{
	PostMessage(WM_CLOSE);
}
void CMyWnd::OnMouseMove(UINT nFlags,CPoint point)
{
	if(m_prePoint == CPoint(-1,-1))
		m_prePoint = point;
	else if(m_prePoint!=point)
		PostMessage(WM_CLOSE);
}
void CMyWnd::OnDestroy()
{
	//删掉计时器
	KillTimer(ID_TIMER);
}
void CMyWnd::PostNcDestroy()
{
	delete this;
}
/////////////////////////////////////////////////////////////////////////////
// CMyWnd message handlers