hyperlinker.cpp

Visual C++网络通信编程实用案例精逊配套源码 光盘中存放的是书中涉及的所有实例的源代码和经过编译后的应用程序。所有程序均经过测试

// HyperLinker.cpp : implementation file
//

#include "stdafx.h"
#include "HyperLinker.h"

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

/////////////////////////////////////////////////////////////////////////////
// CHyperLinker

CHyperLinker::CHyperLinker()
{
	m_bVisited=FALSE;
	m_bAboveControl=FALSE;
}

CHyperLinker::~CHyperLinker()
{
 int i;
 i=10;
}


BEGIN_MESSAGE_MAP(CHyperLinker, CStatic)
	//{{AFX_MSG_MAP(CHyperLinker)
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONDOWN()
	ON_WM_SETCURSOR()
	ON_WM_CONTEXTMENU()
	ON_WM_CTLCOLOR_REFLECT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CHyperLinker::SetAttribute(CString url,COLORREF InitColor, COLORREF VisitedColor, COLORREF CoverColor,BOOL bUnderLine)
{
	m_sURL=url;
	m_InitColor=InitColor;
	m_VisitedColor=VisitedColor;
	m_CoverColor=CoverColor;
	m_bUnderLine=bUnderLine;
}

/////////////////////////////////////////////////////////////////////////////
// CHyperLinker message handlers
void CHyperLinker::OnMouseMove(UINT nFlags, CPoint point)
{
	// TODO: Add your message handler code here and/or call default
	CRect rect;
	GetClientRect(rect);
	static BOOL bIsIn=FALSE;	//判断是否前一此鼠标就已经在static控件区域类
	if (rect.PtInRect(point))
	{
		m_bAboveControl=TRUE;
		if(bIsIn==FALSE)
		{
			SetCapture();
			bIsIn=TRUE;
			Invalidate();
		} 
	}
	else
	{
		m_bAboveControl=FALSE;
		if (bIsIn==TRUE)
		{
			ReleaseCapture();
			bIsIn=FALSE;
			Invalidate();
		}
	}
	CStatic::OnMouseMove(nFlags, point);
}


void CHyperLinker::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	OpenUsingShellExecute();
	m_bVisited=TRUE;
//	UpdateWindow();
	Invalidate();
	CStatic::OnLButtonDown(nFlags, point);
}


void CHyperLinker::PreSubclassWindow() 
{
	// TODO: Add your specialized code here and/or call the base class
	// 获得鼠标事件
    DWORD dwStyle = GetStyle();
    ::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle | SS_NOTIFY);
	CStatic::PreSubclassWindow();
}

BOOL CHyperLinker::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
	// TODO: Add your message handler code here and/or call default
	HCURSOR  LinkCursor = ::AfxGetApp()->LoadCursor(IDC_CURSOR1);
	::SetCursor(LinkCursor);
	return TRUE;			//必须包括这句话
	return CStatic::OnSetCursor(pWnd, nHitTest, message);
}


BOOL CHyperLinker::OpenUsingShellExecute()
{
	HINSTANCE hRun = ShellExecute(GetParent()->GetSafeHwnd(), _T("open"), m_sURL, NULL, NULL, SW_SHOW);
	if ((int) hRun <= 32)
	{
		AfxMessageBox(_T("提供的超级链接或者制定的文件无法执行"));
		return FALSE;
	}
	return TRUE;
}



HBRUSH CHyperLinker::CtlColor(CDC* pDC, UINT nCtlColor) 
{
	ASSERT(nCtlColor == CTLCOLOR_STATIC);

	DWORD dwStyle = GetStyle();
	if (!(dwStyle & SS_NOTIFY)) 
	{
		// Turn on notify flag to get mouse messages and STN_CLICKED.
		// Otherwise, I'll never get any mouse clicks!
		::SetWindowLong(m_hWnd, GWL_STYLE, dwStyle | SS_NOTIFY);
	}

	HBRUSH hbr = NULL;
	if ((dwStyle & 0xFF) <= SS_RIGHT) 
	{
		// Modify the font to be underline
		if (!((HFONT) m_Font))
		{
			LOGFONT lf;
			GetFont()->GetObject(sizeof(lf), &lf);

			lf.lfUnderline = m_bUnderLine;
			m_Font.CreateFontIndirect(&lf);
		}
		pDC->SelectObject(&m_Font);

		//set the text colors
		if(m_bVisited==TRUE)
		{
			pDC->SetTextColor(m_VisitedColor);
//			AfxMessageBox("Click");
		}
		else
		{
			if(m_bAboveControl==TRUE)
			{
				pDC->SetTextColor(m_CoverColor);
//				AfxMessageBox("Above");
			}
			else
			{
				pDC->SetTextColor(this->m_InitColor);
//				AfxMessageBox("init");
			}
		}
		pDC->SetBkMode(TRANSPARENT);
		// return hollow brush to preserve parent background color
		hbr = (HBRUSH)::GetStockObject(HOLLOW_BRUSH);
	}
	return hbr;
}