gpsdlg.cpp

一个基本的类 用于提取GPS数据中的经纬度

// GPSDlg.cpp : implementation file
//

#include "stdafx.h"
#include "GPS.h"
#include "GPSDlg.h"
#include "stdlib.h"
//#include "string.h"
#include "GPS_Parsor.h"

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

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CGPSDlg dialog

CGPSDlg::CGPSDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CGPSDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CGPSDlg)
		// 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 CGPSDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CGPSDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CGPSDlg, CDialog)
	//{{AFX_MSG_MAP(CGPSDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_FILE, OnFile)
	ON_BN_CLICKED(IDC_PROCESS, OnProcess)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGPSDlg message handlers
const char* buf;

BOOL CGPSDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CGPSDlg::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.

void CGPSDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

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

void CGPSDlg::OnFile() 
{
	// TODO: Add your control notification handler code here
	CString ss;
/*	BYTE buffer[0x1000];

	try
	{
		CFile file(_T("File.txt"),CFile::modeReadWrite|CFile::shareDenyNone);
		DWORD dwBytesRemaining=file.GetLength();

	while(dwBytesRemaining)
	{
		DWORD dwPosition=file.GetPosition();  //文件中的偏移值
		UINT nBytesRead=file.Read(buffer,sizeof(buffer));
		::CharLowerBuff((LPTSTR)buffer,nBytesRead);
		file.Seek(dwPosition,CFile::begin);  //相对于文件起始，的偏移。
		file.Write(buffer,nBytesRead);
		dwBytesRemaining-=nBytesRead;
	}

	}
	catch(CFileException *e)
	{
		e->ReportError();
		e->Delete();
	}*/
	try
	{
		CStdioFile file(_T("GPS.txt"),CFile::modeReadWrite|CFile::shareDenyNone);
		
		while(file.ReadString(ss)) //接口是char *dat;怎么转过去。

		
		{	//TRACE(_T("%s\n"),ss);
			buf=(LPSTR)(LPCTSTR)ss;//此buf并不连贯,只能保存单行信息。
			if(*(buf+4)=='G')
				break;
		}


	}
	catch(CFileException *e)
	{
		e->ReportError();
		e->Delete();
	}
	
	TRACE(_T("%s\n"),buf);
	GPS_Parsor my_parsor;

	TRACE(_T("%s\n"),buf);  //为什么到这个函数里面来就没有值了。在哪丢失的。
	my_parsor.parse(buf);//buf信息丢失，全局量啊~ 还是const
    
	double l=my_parsor.longitude();
	double e=my_parsor.latitude();
	double h=my_parsor.height();
	double v=my_parsor.velocity();

	TRACE(_T("%9.4f\n"),l);
	TRACE(_T("%9.4f\n"),e);
	TRACE(_T("%5.2f\n"),h);
	TRACE(_T("%5.2f\n"),v);

}

void CGPSDlg::OnProcess() 
{
	// TODO: Add your control notification handler code here
	/*GPS_Parsor my_parsor;

	TRACE(_T("%s\n"),buf);  //为什么到这个函数里面来就没有值了。在哪丢失的。
	my_parsor.parse(buf);//buf信息丢失，全局量啊~ 还是const
    
	double l=my_parsor.longitude();

	TRACE(_T("%d\n"),l);*/
    char *s="3080.0755";
	double d=atof(s);

	//CString s("abcdefg");
	//TRACE(_T("%s\n"),s.Left(2));
}