www.pudn.com > vc52499446672.rar > Link.cpp

 
#include "stdafx.h" 
#include "link.h" 
 
#define TIP_ID 1 
 
CLink::CLink() 
{ 
    m_bOver      = false;  
	m_hLinkCursor=NULL; //初值设置为NULL，这样如果没有在程序中设置该值，就会使用默认的手形光标 
} 
 
CLink::~CLink() 
{} 
 
///////////////////////////////////////////////////////////////////////////// 
 
BOOL CLink::DestroyWindow()  
{ 
    KillTimer(1);	 
	return CStatic::DestroyWindow(); 
} 
 
BOOL CLink::PreTranslateMessage(MSG* pMsg)  
{ 
    m_ToolTip.RelayEvent(pMsg); 
    return CStatic::PreTranslateMessage(pMsg); 
} 
 
 
void CLink::PreSubclassWindow()  
{ 
    DWORD dwStyle = GetStyle();  //修改属性，使之可接受消息 
    ::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle | SS_NOTIFY); 
     
    SetDefaultCursor();     //设置默认光标为手形光标 
    
	CRect rect;  
    GetClientRect(rect); 
    m_ToolTip.Create(this); 
	m_ToolTip.SetDelayTime(100); 
	m_ToolTip.SetMaxTipWidth(200); 
 
    m_ToolTip.AddTool(this, "", rect, TIP_ID);    CStatic::PreSubclassWindow(); 
} 
 
BEGIN_MESSAGE_MAP(CLink, CStatic) 
    //{{AFX_MSG_MAP(CLink) 
    ON_WM_CTLCOLOR_REFLECT() 
    ON_WM_SETCURSOR() 
    ON_WM_MOUSEMOVE() 
	ON_WM_TIMER() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
 
HBRUSH CLink::CtlColor(CDC* pDC, UINT nCtlColor)  
{ 
    if (m_bOver) 
        pDC->SetTextColor(RGB(255,   0,   0)); 
    else 
        pDC->SetTextColor( RGB(  0,   0, 238)); 
 
    pDC->SetBkMode(TRANSPARENT);   //设置背景是透明的 
    return (HBRUSH)GetStockObject(NULL_BRUSH); 
} 
 
void CLink::OnMouseMove(UINT nFlags, CPoint point)  
{  
	m_bOver = true; 
	Invalidate(); 
	SetTimer(1, 100, NULL); //设置一个定时器，用于设置鼠标离开时的颜色 
	 
    CStatic::OnMouseMove(nFlags, point); 
} 
 
void CLink::OnTimer(UINT nIDEvent)  
{ 
    CPoint pt(::GetMessagePos()); 
    ScreenToClient(&pt); 
 
    CRect rc; 
    GetClientRect(rc); 
 
    if (!rc.PtInRect(pt)) 
    { 
        m_bOver = false; 
        KillTimer(1);         
        Invalidate(); 
    }     
	CStatic::OnTimer(nIDEvent); 
} 
 
BOOL CLink::OnSetCursor(CWnd* /*pWnd*/, UINT /*nHitTest*/, UINT /*message*/)  
{ 
    if (m_hLinkCursor)  //如果设置了光标，就使用新设置的 光标 
    { 
        ::SetCursor(m_hLinkCursor); 
        return true; 
    } 
    return false; 
} 
 
 
///////////////////////////////////////////////////////////////////////////// 
void CLink::SetToolTipText(CString str) 
{ 
	m_ToolTip.UpdateTipText(str,this,TIP_ID); 
} 
 
void CLink::SetLinkCursor(HCURSOR hCursor) 
{  
    m_hLinkCursor = hCursor; 
    if (m_hLinkCursor == NULL) 
        SetDefaultCursor(); 
} 
 
 
void CLink::SetDefaultCursor()   //从winhlp32.exe中提取手形光标，用做默认的光标 
{     
	CString str; 
	::GetWindowsDirectory(str.GetBuffer(MAX_PATH), MAX_PATH); 
	str.ReleaseBuffer(); 
	str += _T("\\winhlp32.exe"); 
	 
	HMODULE hModule = ::LoadLibrary(str); 
	if (hModule)  
	{ 
		HCURSOR hHandCursor = ::LoadCursor(hModule, MAKEINTRESOURCE(106)); 
		if (hHandCursor) 
			m_hLinkCursor =CopyCursor(hHandCursor); 
	} 
	FreeLibrary(hModule); 
	 
}