GPS编程

开发平台：
Visual C++

GPStestView.cpp：源码内容
							// GPStestView.cpp : implementation of the CGPStestView class
//
#include "stdafx.h"
#include "GPStest.h"
#include "GPStestDoc.h"
#include "GPStestView.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CGPStestView
IMPLEMENT_DYNCREATE(CGPStestView, CView)
BEGIN_MESSAGE_MAP(CGPStestView, CView)
	//{{AFX_MSG_MAP(CGPStestView)
	ON_COMMAND(ID_MENU_COM1, OnMenuCom1)
	ON_COMMAND(ID_MENU_FROMFILE, OnMenuFromfile)
	ON_COMMAND(ID_MENU_COM2, OnMenuCom2)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
	ON_MESSAGE(ON_COM_RECEIVE,DrawPoint)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CGPStestView construction/destruction
CGPStestView::CGPStestView()
{
	// TODO: add construction code here
	x=0;y=0;bFirst=true;
}
CGPStestView::~CGPStestView()
{
}
BOOL CGPStestView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CGPStestView drawing
void CGPStestView::OnDraw(CDC* pDC)
{
	CGPStestDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
//	pDC->SetBkColor(RGB(0,0,0));
//	CRect rect;
//	GetClientRect(rect);
//	pDC->FillSolidRect(50,50,200,200,RGB(160,255,0));
//	pDC->Rectangle(rect);
	CBrush bkBrush(RGB(0,0,0));
	CBrush* pOldBrush = pDC->SelectObject(&bkBrush);
	CRect rect;
	pDC->GetClipBox(&rect);     // 擦除所需的区域
	pDC->PatBlt(rect.left, rect.top, rect.Width(), rect.Height(), PATCOPY);
	
	CBrush brush(RGB(0,255,255));
	pDC->SelectObject(&brush);
	pDC->Ellipse(70,70,74,74);
	pDC->SelectObject(pOldBrush);
	
	bkBrush.DeleteObject();
}
/////////////////////////////////////////////////////////////////////////////
// CGPStestView printing
BOOL CGPStestView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}
void CGPStestView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}
void CGPStestView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CGPStestView diagnostics
#ifdef _DEBUG
void CGPStestView::AssertValid() const
{
	CView::AssertValid();
}
void CGPStestView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}
CGPStestDoc* CGPStestView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CGPStestDoc)));
	return (CGPStestDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CGPStestView message handlers
void CGPStestView::OnMenuCom1() 
{
	// TODO: Add your command handler code here
	CClientDC dc(this);
	CPen pen(PS_SOLID,2,RGB(0,255,0));
	CPen *pOldPen=dc.SelectObject(&pen);
	dc.Ellipse(100,100,103,103);
	dc.SelectObject(pOldPen);
}
/*
double x,y;
bool bFirst;
void f( WPARAM wp,LPARAM lp)
{
	GPSParam *gps;
	gps=(GPSParam *)wp;
	HWND hwnd=(HWND)lp;
	double X=gps->X,Y=gps->Y;
	if (bFirst) 
	{
		x=X;
		y=Y;
		bFirst=false;
	}
	CDC *pDC=hwnd->GetDC();
	CBrush *pOldBrush  , brush(RGB(255,0,0));
	
	pOldBrush=pDC->SelectObject(&brush);
	int a=(int)(270.0-(X-x)*20.0),b=(int)(370.0+(Y-y)*20.0);
//	pDC->Ellipse(b,a,b+3,a+3);
	pDC->SetPixel(b,a,RGB(55,0,255) );
//	pDC->Ellipse(count1,count1,count1+5,count1+5);
	count1=count1+1;
	pDC->SelectObject(pOldBrush);
	
	CString str;
	str.Format("%.1f,%.1f,%d,%d,%d",X-x,Y-y,a,b,count1);
	pDC->TextOut(10,10,str);
	delete gps;
	
}
*/
void CGPStestView::OnMenuFromfile() 
{
	// TODO: Add your command handler code here
	m_GPS.set_hwnd(GetSafeHwnd());
//	void (*f)(WPARAM ,LPARAM);
//	f=this->DrawPoint;
//	m_GPS.set_func( f );
	if (!m_GPS.Open_file("hello.ubx")) 
	{
		MessageBox("error,can't open the file");
	}
}
int count1=0;
void CGPStestView::DrawPoint(WPARAM wp, LPARAM lp)
{	
	GPSParam *gps;
	gps=(GPSParam *)wp;
	double X=gps->X,Y=gps->Y;
	if (bFirst) 
	{
		x=X;
		y=Y;
		bFirst=false;
	}
	CDC *pDC=GetDC();
	CPen pen(PS_SOLID,3,RGB(255,0,0) ),*pOldPen;
	CBrush *pOldBrush  , *pBrush=CBrush::FromHandle( (HBRUSH)GetStockObject(NULL_BRUSH) );
	
	pOldPen=pDC->SelectObject(&pen);
	pOldBrush=pDC->SelectObject(pBrush);
	int a=(int)(270.0-(X-x)*5.0),b=(int)(370.0+(Y-y)*5.0);
	pDC->Ellipse(b,a,b+6,a+6);
//	pDC->SetPixel(b,a,RGB(55,0,255) );
//	pDC->Ellipse(count1,count1,count1+5,count1+5);
	count1=count1+1;
	pDC->SelectObject( pOldBrush );
	pDC->SelectObject( pOldPen );
	
	CString str;
	str.Format("%.1f,%.1f,%d,%d,%d",X-x,Y-y,a,b,count1);
	pDC->TextOut(10,10,str);
	delete gps;
}
void CGPStestView::OnMenuCom2() 
{
	// TODO: Add your command handler code here
	CDC *pDC=GetDC();
	CRect rect;
	pDC->GetClipBox(rect);
	CString str;
	str.Format("%d,%d,%d,%d",rect.left,rect.right,rect.Width(),rect.Height());
	MessageBox(str);
}

						