unispen_demoview.cpp

清华紫光紫光笔开发范例

// unispen_demoView.cpp : implementation of the CUnispen_demoView class
//

#include "stdafx.h"
#include "unispen_demo.h"

#include "unispen_demoDoc.h"
#include "unispen_demoView.h"
//for unispen use
#include "wintab.h"
#define PACKETDATA	 PK_X| PK_Y | PK_BUTTONS | PK_NORMAL_PRESSURE
#define PACKETMODE	PK_X | PK_Y |PK_BUTTONS
#include "pktdef.h"
//end for unispen use

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

/////////////////////////////////////////////////////////////////////////////
// CUnispen_demoView

IMPLEMENT_DYNCREATE(CUnispen_demoView, CView)

BEGIN_MESSAGE_MAP(CUnispen_demoView, CView)
	ON_MESSAGE(WT_PACKET, OnWTPacket)
	//{{AFX_MSG_MAP(CUnispen_demoView)
	ON_WM_CREATE()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONDOWN()
	//}}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)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUnispen_demoView construction/destruction

CUnispen_demoView::CUnispen_demoView()
{
	// TODO: add construction code here
	hCtx = 0;
}

CUnispen_demoView::~CUnispen_demoView()
{
	if( hCtx )
		WTClose( hCtx );
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CUnispen_demoView drawing

void CUnispen_demoView::OnDraw(CDC* pDC)
{
	CUnispen_demoDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CUnispen_demoView printing

BOOL CUnispen_demoView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CUnispen_demoView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CUnispen_demoView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CUnispen_demoView diagnostics

#ifdef _DEBUG
void CUnispen_demoView::AssertValid() const
{
	CView::AssertValid();
}

void CUnispen_demoView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CUnispen_demoView message handlers

int CUnispen_demoView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	WTInfo( WTI_DEFCONTEXT, 0, &lc );

	// Open the context
	lc.lcPktData = PACKETDATA;
	lc.lcPktMode = PACKETMODE;
	lc.lcOptions = CXO_SYSTEM;// | CXO_MESSAGES;
	lc.lcSysMode = 1;
	hCtx = WTOpen( m_hWnd, &lc, TRUE );
	if (hCtx == NULL)
		AfxMessageBox("Error Open wintab");
	
	return 0;
}
//wintab message handler
LRESULT CUnispen_demoView::OnWTPacket(WPARAM wSerial, LPARAM hCtx)
{
	// Read the packet
	PACKET pkt;
//	WTPacket( (HCTX)hCtx, wSerial, &pkt );

	CDC *pDC = GetDC();
	
	//display the pressure
	CString str;
	char buf[20];
	wsprintf(buf, "%ld", pkt.pkNormalPressure);
	pDC->TextOut(0,0, "       ", 7);
	str = buf;
	pDC->TextOut(0,0, str);

	ReleaseDC(pDC);

	return 0;
}
CPoint ptOld;
void CUnispen_demoView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	PACKET pkt[5];
	int i;
	CDC *pDC = GetDC();
	CPen newpen, *poldpen;
	i = WTPacketsGet(hCtx, 5, pkt);
	if ( i > 0) 
	{
		CString str;
		char buf[20];
		int pressure = pkt[i-1].pkNormalPressure;
		wsprintf(buf, "x:%03ld  y:%03ld  pressure:%03ld", point.x, point.y, pressure);
		pDC->TextOut(0, 0, "                                ", 30);
		str = buf;
		pDC->TextOut(0, 0, str);
		if (nFlags & MK_LBUTTON)
		{
			newpen.CreatePen(PS_SOLID, pressure /8 , 0x008040ff);
			poldpen = pDC->SelectObject(&newpen);
			pDC->MoveTo(ptOld);
			pDC->LineTo(point);
			pDC->SelectObject(poldpen);
			newpen.DeleteObject();
		}

		ptOld = point;
	}
	ReleaseDC( pDC );
	
	CView::OnMouseMove(nFlags, point);
}

void CUnispen_demoView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	ptOld = point;
	CView::OnLButtonDown(nFlags, point);
}