huatuview.cpp

主要包含vc++下MFC环境下的对话框等编集的学生查询系统及相关的画图计算程序

// huatuView.cpp : implementation of the CHuatuView class
//

#include "stdafx.h"
#include "huatu.h"

#include "huatuDoc.h"
#include "huatuView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CHuatuView

IMPLEMENT_DYNCREATE(CHuatuView, CView)

BEGIN_MESSAGE_MAP(CHuatuView, CView)
	//{{AFX_MSG_MAP(CHuatuView)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CHuatuView construction/destruction

CHuatuView::CHuatuView()
{
	// TODO: add construction code here

}

CHuatuView::~CHuatuView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CHuatuView drawing

void CHuatuView::OnDraw(CDC* pDC)
{
	CHuatuDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	CPoint pointfrom,pointto;
	UINT udrawtype;
	for(int i=0;i<=pDoc->m_nrectindex;i++)
	{ pointfrom=pDoc->m_srectangles[i].pointfrom;
	  pointto=pDoc->m_srectangles[i].pointto;
	  udrawtype=pDoc->m_srectangles[i].udrawtype;
	  switch(udrawtype)
	  { case 1:
	  pDC->Rectangle(pointfrom.x,pointfrom.y,pointto.x,pointto.y);
	    break;
	  case 2:
		pDC->MoveTo(pointfrom.x,pointfrom.y);
		pDC->LineTo(pointto.x,pointto.y);
		break;
	  case 3:
		  CRect CirRect(pointfrom,pointto);
		  CPoint pointcir(pointfrom.x,(pointfrom.y+pointto.y)/2);
          //CPoint pointcir((pointfrom.x+pointto.x)/2,(pointfrom.y+pointto.y)/2);
          //CRect Rectangle(pointfrom.x,pointfrom.y,(pointfrom.x+20),(pointfrom.y+20));
		  pDC->Arc(CirRect,pointcir,pointcir);
		   //pDC->Ellipse(Rectangle);
		  
		  break;
	  }
	}
}

/////////////////////////////////////////////////////////////////////////////
// CHuatuView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CHuatuView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CHuatuView message handlers

void CHuatuView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
		CHuatuDoc *pDoc=GetDocument();
		UINT udrawtype=pDoc->m_udrawtype;
	if(udrawtype>=1 && udrawtype<=3)
	{ if(pDoc->m_nrectindex<99)
	{ pDoc->m_blbuttondown=true;
	  pDoc->m_nrectindex++;
	  pDoc->m_srectangles[pDoc->m_nrectindex].pointfrom=point;
	  pDoc->m_srectangles[pDoc->m_nrectindex].udrawtype=udrawtype;
	  pDoc->SetModifiedFlag();
	}
	else
		MessageBox("绘制的矩形已达到100个，不能再绘制矩形!");
	}
	
	CView::OnLButtonDown(nFlags, point);
}

void CHuatuView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CHuatuDoc *pDoc=GetDocument();
	pDoc->m_blbuttondown=false;


	
	CView::OnLButtonUp(nFlags, point);
}

void CHuatuView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CHuatuDoc *pDoc=GetDocument();
	if(pDoc->m_blbuttondown==true)
	{ 
	{  pDoc->m_srectangles[pDoc->m_nrectindex].pointto=point;
	pDoc->UpdateAllViews(NULL);
	}
	}


	
	CView::OnMouseMove(nFlags, point);
}