mdrowpenview.cpp

提供一个图形工具界面

		pDC->Arc(CRect(m_pStartPoint,m_pEndPoint),m_pStartPoint,EndPoint);
		ReleaseDC(pDC);
		break;
	case 5:
		pDC->SetROP2(R2_COPYPEN);
		pDC->Rectangle(CRect(m_pStartPoint,m_pEndPoint));
		ReleaseDC(pDC);
		break;
	case 6:
		pDC->SetROP2(R2_COPYPEN);
		long NewLenth;
		NewLenth = sqrtf((m_pEndPoint.x-m_pStartPoint.x)*(m_pEndPoint.x-m_pStartPoint.x)+
			(m_pEndPoint.y-m_pStartPoint.y)*(m_pEndPoint.y-m_pStartPoint.y));
		
		pDC->Ellipse(m_pStartPoint.x+NewLenth,m_pStartPoint.y-NewLenth,m_pStartPoint.x-NewLenth,
			m_pStartPoint.y+NewLenth);
		ReleaseDC(pDC);
		break;
	case 7:
		pDC->SetROP2(R2_COPYPEN);
		m_pEndPoint = point;	
		pDC->Ellipse(CRect(m_pStartPoint,m_pEndPoint));
		break;
	ReleaseDC(pDC);
	}
	switch (m_nFlag)
	{
	case 1:
		{
			Line *pLinenext = (Line*)malloc(sizeof(Line));
			pLinenext->Startpoint = m_pStartPoint;
			pLinenext->EndPoint   = m_pEndPoint;
			pLinenext->nPenSize = m_nPenSize;
			pLinenext->nmyBlue  = nBlue;
			pLinenext->nmyGreen = nGreen;
			pLinenext->nmyRed   = nRed;
			pLinenext->next = NULL;
			p->next = pLinenext;
			p = pLinenext;
			break;
		}
	case 2:
		break;
	case 3:
		{
			Line *pzNext= (Line*)malloc(sizeof(Line));
			pzNext->Startpoint = m_pzStarpoint;
			pzNext->EndPoint   = m_pzEndpoint;
			pzNext->nPenSize   = m_nPenSize;
			pzNext->nmyBlue    = nBlue;
			pzNext->nmyGreen   = nGreen;
			pzNext->nmyRed     = nRed;
			pzNext->next       = NULL;
			zp->next = pzNext;
			zp       = pzNext;
			break;
		}
	case 4:
		break;
	case 5:
		{
			Line *pzNext= (Line*)malloc(sizeof(Line));
			pzNext->Startpoint = m_pStartPoint;
			pzNext->EndPoint   = m_pEndPoint;
			pzNext->nPenSize   = m_nPenSize;
			pzNext->nmyBlue    = nBlue;
			pzNext->nmyGreen   = nGreen;
			pzNext->nmyRed     = nRed;
			pzNext->next       = NULL;
			rp->next = pzNext;
			rp       = pzNext;
			break;
		}
	case 6:
		{
			Line *pzNext= (Line*)malloc(sizeof(Line));
			pzNext->Startpoint = m_pStartPoint;
			pzNext->EndPoint   = m_pEndPoint;
			pzNext->nPenSize   = m_nPenSize;
			pzNext->nmyBlue    = nBlue;
			pzNext->nmyGreen   = nGreen;
			pzNext->nmyRed     = nRed;
			pzNext->next       = NULL;
			cp->next = pzNext;
			cp       = pzNext;
			break;
		}
	case 7:
		{
			Line *pzNext= (Line*)malloc(sizeof(Line));
			pzNext->Startpoint = m_pStartPoint;
			pzNext->EndPoint   = m_pEndPoint;
			pzNext->nPenSize   = m_nPenSize;
			pzNext->nmyBlue    = nBlue;
			pzNext->nmyGreen   = nGreen;
			pzNext->nmyRed     = nRed;
			pzNext->next       = NULL;
			ep->next = pzNext;
			ep       = pzNext;
			break;
		}

	}
		
	m_pzStarpoint = m_pzEndpoint;
	m_bFlag = false;

	CView::OnLButtonUp(nFlags, point);
}

void CMDrowPenView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CDC * pDC = GetDC();
	CPen mypen;
	CPen *mOldPen ;
	mypen.CreatePen(PS_COSMETIC, m_nPenSize, RGB(nRed,nGreen,nBlue));
	mOldPen = &mypen;
	pDC->SelectObject(mOldPen);
	CBrush *pbrush=CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH)); //用刷子防止画的封闭图形是实心的，
	pDC->SelectObject(pbrush);                                             // 因为画图模式SetROP2(R2_NOT)
	CBrush * pOldBrush = (CBrush *)pDC->SelectStockObject(NULL_BRUSH);
	if (m_bFlag)
	{
		m_pEndPoint = point;
		switch (m_nFlag)
		{
		case 1:
			pDC->SetROP2(R2_NOT);
			m_pEndPoint = point;
			pDC->MoveTo(m_pStartPoint);
			pDC->LineTo(m_oldPoint);
			pDC->MoveTo(m_pStartPoint);
			pDC->LineTo(m_pEndPoint);
			m_oldPoint = point;
			ReleaseDC(pDC);
			break;
		case 2:
			m_pEndPoint = point;
			pDC->MoveTo(m_pStartPoint);
			pDC->LineTo(m_pEndPoint);
			m_pStartPoint = m_pEndPoint;
			ReleaseDC(pDC);
			break;
		case 3:
			pDC->SetROP2(R2_NOT);
			m_pzEndpoint = point;
			pDC->MoveTo(m_pzStarpoint);
			pDC->LineTo(mOldPoint);

			pDC->MoveTo(m_pzStarpoint);
			pDC->LineTo(m_pzEndpoint);

			mOldPoint = point;
			break;
		case 4:
			ReleaseDC(pDC);
			break;
		case 5:
			pDC->SetROP2(R2_NOT);
			pDC->Rectangle(CRect(m_pStartPoint,m_oldPoint));
			pDC->Rectangle(CRect(m_pStartPoint,m_pEndPoint));
			m_oldPoint = point;
			ReleaseDC(pDC);
			break;
		case 6:
			pDC->SetROP2(R2_NOT);
			LONG lenth;
			long NewLenth;
			m_pEndPoint = point;
			lenth = sqrtf((m_oldPoint.x-m_pStartPoint.x)*(m_oldPoint.x-m_pStartPoint.x)+
				(m_oldPoint.y-m_pStartPoint.y)*(m_oldPoint.y-m_pStartPoint.y));
			NewLenth = sqrtf((m_pEndPoint.x-m_pStartPoint.x)*(m_pEndPoint.x-m_pStartPoint.x)+
				(m_pEndPoint.y-m_pStartPoint.y)*(m_pEndPoint.y-m_pStartPoint.y));
			pDC->Ellipse(m_pStartPoint.x+lenth,m_pStartPoint.y-lenth,m_pStartPoint.x-lenth,m_pStartPoint.y+lenth);

			pDC->Ellipse(m_pStartPoint.x+NewLenth,m_pStartPoint.y-NewLenth,m_pStartPoint.x-NewLenth,
				m_pStartPoint.y+NewLenth);

			m_oldPoint = point;
			ReleaseDC(pDC);
			break;
		case 7:
			pDC->SetROP2(R2_NOT);
			m_pEndPoint = point;
			pDC->Ellipse(CRect(m_pStartPoint,m_oldPoint));

			pDC->Ellipse(CRect(m_pStartPoint,m_pEndPoint));
			m_oldPoint = point;
			ReleaseDC(pDC);
			break;
		}		
	}
	CString str;
	CMainFrame *pFrame = (CMainFrame*)AfxGetApp()->m_pMainWnd;
	CStatusBar* pStatus = &pFrame->m_wndStatusBar;

	if (pStatus)
	{
		str.Format("X = %d",point.x);  //把各种变量格式化输出到一个字符串变量里。
		pStatus->SetPaneText(2,str);   //设置第三个状态栏，
		str.Format("Y = %d",point.y);
		pStatus->SetPaneText(3,str);    //设置第四个状态栏
	}
}
void CMDrowPenView::OnDrawLine() 
{
	// TODO: Add your command handler code here
	m_nFlag = 1;
}

void CMDrowPenView::OnDrowThread() 
{
	// TODO: Add your command handler code here
	m_nFlag = 2;
}

void CMDrowPenView::OnDrowMline() 
{
	// TODO: Add your command handler code here
	m_nFlag = 3;
}

void CMDrowPenView::OnDrowArc() 
{
	// TODO: Add your command handler code here
	m_nFlag = 4;
	
}

void CMDrowPenView::OnDrowCecle() 
{
	// TODO: Add your command handler code here
	m_nFlag = 6;

}

void CMDrowPenView::OnDorwRect() 
{
	// TODO: Add your command handler code here
	m_nFlag  = 5;
}

void CMDrowPenView::OnDrowEllipse() 
{
	// TODO: Add your command handler code here
	m_nFlag = 7;
}

void DrawRect(CDC *pDC, CPoint *Startpoint, CPoint *Endpoint)
{

}

void CMDrowPenView::OnSize() 
{
	// TODO: Add your command handler code here
	CsizeDlg SetSize;
	int nResponse =SetSize.DoModal();
	if (nResponse == IDOK)
	{
		m_nPenSize = SetSize.m_nSize;
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}

}

void CMDrowPenView::OnColor() 
{
	// TODO: Add your command handler code here
	SetColorDlg SetColor;
	int nResponse = SetColor.DoModal();
	if (nResponse = IDOK)
	{
		nRed   = SetColor.m_nRedValue;
		nGreen = SetColor.m_nGreenValue;
		nBlue  = SetColor.m_nBlueValue;
	}
	
}


void CMDrowPenView::OnInitialUpdate() 
{
	CView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	m_nPenSize = 1;
	nBlue  = 0;
	nGreen = 0;
	nRed   = 0;
	nCount = 0;

	head = (Line*)malloc(sizeof(Line));
	head->next = NULL;
	p = head;

	zhead = (Line*)malloc(sizeof(Line));
	zhead->next = NULL;
	zp = zhead;

	chead = (Line*)malloc(sizeof(Line));
	chead->next = NULL;
	cp = chead;

	rhead = (Line*)malloc(sizeof(Line));
	rhead->next = NULL;
	rp = rhead;

	ehead = (Line*)malloc(sizeof(Line));
	ehead->next = NULL;
	ep = ehead;
}
void CMDrowPenView::OnUpdateXY(CCmdUI* pCmdUI)
{
	pCmdUI->Enable(true);
}