// SenderView.cpp : implementation of the CSenderView class
//

#include "stdafx.h"
#include "Sender.h"

#include "SenderDoc.h"
#include "SenderView.h"

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


/////////////////////////////////////////////////////////////////////////////
// CSenderView

IMPLEMENT_DYNCREATE(CSenderView, CFormView)

BEGIN_MESSAGE_MAP(CSenderView, CFormView)
	//{{AFX_MSG_MAP(CSenderView)
	ON_WM_DESTROY()
	ON_BN_CLICKED(IDC_SEND, OnSend)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSenderView construction/destruction

CSenderView::CSenderView()
	: CFormView(CSenderView::IDD)
{
	//{{AFX_DATA_INIT(CSenderView)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// TODO: add construction code here

}

CSenderView::~CSenderView()
{
}

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

BOOL CSenderView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CFormView::PreCreateWindow(cs);
}

void CSenderView::OnInitialUpdate()
{
	CFormView::OnInitialUpdate();
}

/////////////////////////////////////////////////////////////////////////////
// CSenderView diagnostics

#ifdef _DEBUG
void CSenderView::AssertValid() const
{
	CFormView::AssertValid();
}

void CSenderView::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}

CSenderDoc* CSenderView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CSenderDoc)));
	return (CSenderDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CSenderView message handlers

void CSenderView::OnDestroy() 
{
	CFormView::OnDestroy();
}

void CSenderView::OnSend() 
{
	// 自定義消息
	#define WM_MAP_OPEN			WM_USER + 101
	#define WM_DATA_READY		WM_USER + 102
	#define WM_MAP_CLOSE		WM_USER + 103

	// 在系統頁文件創建文件映射內核對象
	HANDLE hRecvMap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, 
								PAGE_READWRITE | SEC_COMMIT,
								0, 1000000, "DataMap");
	if (hRecvMap == NULL)
		return;

	// 映射到進程的地址空間
	LPBYTE lpData = (LPBYTE)MapViewOfFile(hRecvMap, FILE_MAP_WRITE, 0, 0, 0);
	if (lpData == NULL)
		return;

	// 通知接收程序共享內存已建立
	CWnd* pWnd = FindWindow(NULL, "接收程序");
	if (pWnd != NULL)
		pWnd->PostMessage(WM_MAP_OPEN, 0, 0);
	
	// 要發送的數據
	CString Message = "本數據從發送方發出!";

	// 將數據寫入到共享內存
	memcpy(lpData, Message, Message.GetLength());

	// 通知接收方數據準備好
	pWnd->PostMessage(WM_DATA_READY, (WPARAM)0, (LPARAM)Message.GetLength());

	// 延遲1毫秒
	Sleep(1);

	// 通知接收方關閉共享內存
	pWnd->PostMessage(WM_MAP_CLOSE, 0, 0);

	// 撤消映像
	UnmapViewOfFile(lpData);

	// 關閉映像對象
	CloseHandle(hRecvMap);
}