memorydemo.cpp

在WinCE环境下,不同的AP可能需要共享数据,信息,该例子就是几个不同的AP来读写同一块内存的例子.

// MemoryDemo.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "MemoryDemo.h"
#include "MemoryDemoDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMemoryDemoApp

BEGIN_MESSAGE_MAP(CMemoryDemoApp, CWinApp)
	//{{AFX_MSG_MAP(CMemoryDemoApp)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMemoryDemoApp construction

CMemoryDemoApp::CMemoryDemoApp()
	: CWinApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
	
	HANDLE handle = NULL;
	ReadMemoryMap(handle,&m_PARA);
	m_bIsOpenGPS = FALSE;
// 	ClearMemory();


}

/////////////////////////////////////////////////////////////////////////////
// The one and only CMemoryDemoApp object

CMemoryDemoApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CMemoryDemoApp initialization

BOOL CMemoryDemoApp::InitInstance()
{
	// Standard initialization
	// If you are not using these features and wish to reduce the size
	//  of your final executable, you should remove from the following
	//  the specific initialization routines you do not need.
	m_bIsOpenGPS = OpenGPS();
	CMemoryDemoDlg dlg;
	m_pMainWnd = &dlg;
	int nResponse = dlg.DoModal();
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}
BOOL CMemoryDemoApp::OpenGPS()
{
	BOOL bReturn = TRUE;
	HANDLE handle = NULL;
	CString strGPSFlag = m_PARA.Para_GPS_USE_FLAG;
	CString strSrcApp		= _T("");
	CString strSrcAppTitle	= _T("");
	HWND    hwndSrcApp  = NULL;
	// no App use GPS port
	if(strGPSFlag != _T("1"))
	{
		WriteMapData();
		bReturn = TRUE;
	}
	else // some APP used GPS port 
	{
		strSrcAppTitle = m_PARA.Para_Src_Title;
		strSrcApp      = m_PARA.Para_Src_APP;
		bReturn = IsRun(strSrcApp);
		if(bReturn)
		{
			wcscmp(m_PARA.Para_Des_APP,_T("MemoryDemo.exe"));
			wcscpy(m_PARA.Para_Des_APP_PATH,_T("\\"));
			wcscpy(m_PARA.Para_Des_Title,_T("MemoryDemo"));
			WriteMemoryMap(handle,&m_PARA);
			hwndSrcApp = ::FindWindow(NULL, strSrcAppTitle);
			if(hwndSrcApp != NULL)
			{
				::SendMessage(hwndSrcApp, WMMSG_CLOSE_GPS, 0, 0);
			}
			Sleep(1000);
			ReadMemoryMap(handle,&m_PARA);

			strGPSFlag = m_PARA.Para_GPS_USE_FLAG;
			bReturn = (strGPSFlag == _T("0"));
			if(bReturn)
			{
				WriteMapData();
			}
		}
	}
	return bReturn;
}

void CMemoryDemoApp::WriteMapData()
{
	HANDLE handle = NULL;
	CString	strTime = _T("");
	CTime CurTime = CTime::GetCurrentTime();
	strTime.Format(_T("%d-%02d-%02d %0d:%02d:%02d"),
					   CurTime.GetYear(),
					   CurTime.GetMonth(),
					   CurTime.GetDay(),
					   CurTime.GetHour(),
					   CurTime.GetMinute(),
					   CurTime.GetSecond());

	wcscpy(m_PARA.Para_GPS_USE_FLAG,_T("1"));
	wcscpy(m_PARA.Para_Src_APP,_T("MemoryDemo.exe"));
	wcscpy(m_PARA.Para_Src_APP_PATH,_T("\\"));
	wcscpy(m_PARA.Para_Src_Title,_T("MemoryDemo"));
	wcscpy(m_PARA.Para_GPS_USE_DATETIME,strTime);
	wcscpy(m_PARA.Para_Des_APP,_T("MemoryDemo.exe"));
	wcscpy(m_PARA.Para_Des_APP_PATH,_T("\\"));
	wcscpy(m_PARA.Para_Des_Title,_T("MemoryDemo"));
	WriteMemoryMap(handle,&m_PARA);
}

BOOL CMemoryDemoApp::ReleaseGPS()
{
	BOOL bReturn = TRUE;
	HANDLE handle = NULL;
	CString strDesApp		= _T("");
	CString strDesAppTitle	= _T("");
// 	HWND    hwndDesApp  = NULL;
	// no App use GPS port
	strDesAppTitle = m_PARA.Para_Des_Title;
	strDesApp      = m_PARA.Para_Des_APP;
	bReturn = IsRun(strDesApp);
	if(bReturn)
	{
		wcscpy(m_PARA.Para_GPS_USE_FLAG,_T("0"));
		wcscmp(m_PARA.Para_Src_APP,_T(""));
		wcscpy(m_PARA.Para_Src_APP_PATH,_T(""));
		wcscpy(m_PARA.Para_Src_Title,_T(""));

		WriteMemoryMap(handle,&m_PARA);
//		hwndSrcApp = ::FindWindow(NULL, strSrcAppTitle);
//		if(hwndSrcApp != NULL)
//		{
//			::SendMessage(hwndSrcApp, WMMSG_CLOSE_GPS, 0, 0);
//		}
	}
	return bReturn;
}

int CMemoryDemoApp::ExitInstance() 
{
	// TODO: Add your specialized code here and/or call the base class
	ClearMemory();
	return CWinApp::ExitInstance();
}