如何在vc程序中实现超级连接

看看下面的资料
http://www.csdn.net/expert/topicview1.asp
/////////////HyperLink.h
class CHyperLink : public CStatic
{
// Construction/destruction
public:
    CHyperLink();
    virtual ~CHyperLink();// Attributes
public:// Operations
public:    void SetURL(CString strURL);
    CString GetURL() const;    void SetColours(COLORREF crLinkColour, COLORREF crVisitedColour,
                    COLORREF crHoverColour = -1);
    COLORREF GetLinkColour() const;
    COLORREF GetVisitedColour() const;
    COLORREF GetHoverColour() const;    void SetVisited(BOOL bVisited = TRUE);
    BOOL GetVisited() const;    void SetLinkCursor(HCURSOR hCursor);
    HCURSOR GetLinkCursor() const;    void SetUnderline(BOOL bUnderline = TRUE);
    BOOL GetUnderline() const;    void SetAutoSize(BOOL bAutoSize = TRUE);
    BOOL GetAutoSize() const;// Overrides
    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(CHyperLink)
    public:
    virtual BOOL PreTranslateMessage(MSG* pMsg);
    protected:
    virtual void PreSubclassWindow();
    //}}AFX_VIRTUAL// Implementation
protected:
    HINSTANCE GotoURL(LPCTSTR url, int showcmd);
    void ReportError(int nError);
    LONG GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata);
    void PositionWindow();
    void SetDefaultCursor();// Protected attributes
protected:
    COLORREF m_crLinkColour, m_crVisitedColour;    // Hyperlink colours
    COLORREF m_crHoverColour;                      // Hover colour
    BOOL    m_bOverControl;                        // cursor over control?
    BOOL    m_bVisited;                            // Has it been visited?
    BOOL    m_bUnderline;                          // underline hyperlink?
    BOOL    m_bAdjustToFit;                        // Adjust window size to fit text?
    CString  m_strURL;                              // hyperlink URL
    CFont    m_Font;                                // Underline font if necessary
    HCURSOR  m_hLinkCursor;                        // Cursor for hyperlink
    CToolTipCtrl m_ToolTip;                        // The tooltip    // Generated message map functions
protected:
    //{{AFX_MSG(CHyperLink)
    afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);
    afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
    afx_msg void OnMouseMove(UINT nFlags, CPoint point);
    //}}AFX_MSG
    afx_msg void OnClicked();
    DECLARE_MESSAGE_MAP()
};
//////HyperLink.cpp#include "StdAfx.h"
#include "HyperLink.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif#define TOOLTIP_ID 1/////////////////////////////////////////////////////////////////////////////
// CHyperLinkCHyperLink::CHyperLink()
{
    m_hLinkCursor      = NULL;                // No cursor as yet
    m_crLinkColour      = RGB(  0,  0, 238);  // Blue
    m_crVisitedColour  = RGB( 85,  26, 139);  // Purple
    m_crHoverColour    = ::GetSysColor(COLOR_HIGHLIGHT);
    m_bOverControl      = FALSE;                // Cursor not yet over control
    m_bVisited          = FALSE;                // Hasn't been visited yet.
    m_bUnderline        = TRUE;                // Underline the link?
    m_bAdjustToFit      = TRUE;                // Resize the window to fit the text?
    m_strURL.Empty();
}CHyperLink::~CHyperLink()
{
    m_Font.DeleteObject();
}BEGIN_MESSAGE_MAP(CHyperLink, CStatic)
    //{{AFX_MSG_MAP(CHyperLink)
    ON_CONTROL_REFLECT(STN_CLICKED, OnClicked)
    ON_WM_CTLCOLOR_REFLECT()
    ON_WM_SETCURSOR()
    ON_WM_MOUSEMOVE()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CHyperLink message handlersBOOL CHyperLink::PreTranslateMessage(MSG* pMsg)
{
    m_ToolTip.RelayEvent(pMsg);
    return CStatic::PreTranslateMessage(pMsg);
}void CHyperLink::OnClicked()
{
    int result = (int)GotoURL(m_strURL, SW_SHOW);
    m_bVisited = (result > HINSTANCE_ERROR);
    if (!m_bVisited) {
        MessageBeep(MB_ICONEXCLAMATION);    // Unable to follow link
        ReportError(result);
    } else
        SetVisited();                        // Repaint to show visited colour
}HBRUSH CHyperLink::CtlColor(CDC* pDC, UINT nCtlColor)
{
    ASSERT(nCtlColor == CTLCOLOR_STATIC);    if (m_bOverControl)
        pDC->SetTextColor(m_crHoverColour);
    else if (m_bVisited)
        pDC->SetTextColor(m_crVisitedColour);
    else
        pDC->SetTextColor(m_crLinkColour);    // transparent text.
    pDC->SetBkMode(TRANSPARENT);
    return (HBRUSH)GetStockObject(NULL_BRUSH);
}void CHyperLink::OnMouseMove(UINT nFlags, CPoint point)
{
    CStatic::OnMouseMove(nFlags, point);    if (m_bOverControl)        // Cursor is currently over control
    {
        CRect rect;
        GetClientRect(rect);        if (!rect.PtInRect(point))
        {
            m_bOverControl = FALSE;
            ReleaseCapture();
            RedrawWindow();
            return;
        }
    }
    else                      // Cursor has just moved over control
    {
        m_bOverControl = TRUE;
        RedrawWindow();
        SetCapture();
    }
}BOOL CHyperLink::OnSetCursor(CWnd* /*pWnd*/, UINT /*nHitTest*/, UINT /*message*/)
{
    if (m_hLinkCursor)
    {
        ::SetCursor(m_hLinkCursor);
        return TRUE;
    }
    return FALSE;
}void CHyperLink::PreSubclassWindow()
{
    // We want to get mouse clicks via STN_CLICKED
    DWORD dwStyle = GetStyle();
    ::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle ¦ SS_NOTIFY);

    // Set the URL as the window text
    if (m_strURL.IsEmpty())
        GetWindowText(m_strURL);    // Check that the window text isn't empty. If it is, set it as the URL.
    CString strWndText;
    GetWindowText(strWndText);
    if (strWndText.IsEmpty()) {
        ASSERT(!m_strURL.IsEmpty());    // Window and URL both NULL. DUH!
        SetWindowText(m_strURL);
    }    // Create the font
    LOGFONT lf;
    GetFont()->GetLogFont(&lf);
    lf.lfUnderline = m_bUnderline;
    m_Font.CreateFontIndirect(&lf);
    SetFont(&m_Font);    PositionWindow();        // Adjust size of window to fit URL if necessary
    SetDefaultCursor();      // Try and load up a "hand" cursor    // Create the tooltip
    CRect rect;
    GetClientRect(rect);
    m_ToolTip.Create(this);
    m_ToolTip.AddTool(this, m_strURL, rect, TOOLTIP_ID);    CStatic::PreSubclassWindow();
}/////////////////////////////////////////////////////////////////////////////
// CHyperLink operationsvoid CHyperLink::SetURL(CString strURL)
{
    m_strURL = strURL;    if (::IsWindow(GetSafeHwnd())) {
        PositionWindow();
        m_ToolTip.UpdateTipText(strURL, this, TOOLTIP_ID);
    }
}CString CHyperLink::GetURL() const
{
    return m_strURL;
}void CHyperLink::SetColours(COLORREF crLinkColour, COLORREF crVisitedColour,
                            COLORREF crHoverColour /* = -1 */)
{
    m_crLinkColour    = crLinkColour;
    m_crVisitedColour = crVisitedColour;if (crHoverColour == -1)
m_crHoverColour = ::GetSysColor(COLOR_HIGHLIGHT);
else
m_crHoverColour = crHoverColour;    if (::IsWindow(m_hWnd))
        Invalidate();
}COLORREF CHyperLink::GetLinkColour() const
{
    return m_crLinkColour;
}COLORREF CHyperLink::GetVisitedColour() const
{
    return m_crVisitedColour;
}COLORREF CHyperLink::GetHoverColour() const
{
    return m_crHoverColour;
}void CHyperLink::SetVisited(BOOL bVisited /* = TRUE */)
{
    m_bVisited = bVisited;     if (::IsWindow(GetSafeHwnd()))
        Invalidate();
}BOOL CHyperLink::GetVisited() const
{
    return m_bVisited;
}void CHyperLink::SetLinkCursor(HCURSOR hCursor)
{
    m_hLinkCursor = hCursor;
    if (m_hLinkCursor == NULL)
        SetDefaultCursor();
}HCURSOR CHyperLink::GetLinkCursor() const
{
    return m_hLinkCursor;
}void CHyperLink::SetUnderline(BOOL bUnderline /* = TRUE */)
{
    m_bUnderline = bUnderline;    if (::IsWindow(GetSafeHwnd()))
    {
        LOGFONT lf;
        GetFont()->GetLogFont(&lf);
        lf.lfUnderline = m_bUnderline;        m_Font.DeleteObject();
        m_Font.CreateFontIndirect(&lf);        SetFont(&m_Font);        Invalidate();
    }
}BOOL CHyperLink::GetUnderline() const
{
    return m_bUnderline;
}void CHyperLink::SetAutoSize(BOOL bAutoSize /* = TRUE */)
{
    m_bAdjustToFit = bAutoSize;    if (::IsWindow(GetSafeHwnd()))
        PositionWindow();
}BOOL CHyperLink::GetAutoSize() const
{
    return m_bAdjustToFit;
}
// Move and resize the window so that the window is the same size
// as the hyperlink text. This stops the hyperlink cursor being active
// when it is not directly over the text. If the text is left justified
// then the window is merely shrunk, but if it is centred or right
// justified then the window will have to be moved as well.
//
// Suggested by P錶 K. T鴑der void CHyperLink::PositionWindow()
{
    if (!::IsWindow(GetSafeHwnd()) ¦¦ !m_bAdjustToFit)
        return;    // Get the current window position
    CRect rect;
    GetWindowRect(rect);    CWnd* pParent = GetParent();
    if (pParent)
        pParent->ScreenToClient(rect);    // Get the size of the window text
    CString strWndText;
    GetWindowText(strWndText);    CDC* pDC = GetDC();
    CFont* pOldFont = pDC->SelectObject(&m_Font);
    CSize Extent = pDC->GetTextExtent(strWndText);
    pDC->SelectObject(pOldFont);
    ReleaseDC(pDC);    // Get the text justification via the window style
    DWORD dwStyle = GetStyle();    // Recalc the window size and position based on the text justification
    if (dwStyle & SS_CENTERIMAGE)
        rect.DeflateRect(0, (rect.Height() - Extent.cy)/2);
    else
        rect.bottom = rect.top + Extent.cy;    if (dwStyle & SS_CENTER)
        rect.DeflateRect((rect.Width() - Extent.cx)/2, 0);
    else if (dwStyle & SS_RIGHT)
        rect.left  = rect.right - Extent.cx;
    else // SS_LEFT = 0, so we can't test for it explicitly
        rect.right = rect.left + Extent.cx;    // Move the window
    SetWindowPos(NULL, rect.left, rect.top, rect.Width(), rect.Height(), SWP_NOZORDER);
}/////////////////////////////////////////////////////////////////////////////
// CHyperLink implementation// The following appeared in Paul DiLascia's Jan 1998 MSJ articles.
// It loads a "hand" cursor from the winhlp32.exe module
void CHyperLink::SetDefaultCursor()
{
    if (m_hLinkCursor == NULL)                // No cursor handle - load our own
    {
        // Get the windows directory
        CString strWndDir;
        GetWindowsDirectory(strWndDir.GetBuffer(MAX_PATH), MAX_PATH);
        strWndDir.ReleaseBuffer();        strWndDir += _T("\\winhlp32.exe");
        // This retrieves cursor #106 from winhlp32.exe, which is a hand pointer
        HMODULE hModule = LoadLibrary(strWndDir);
        if (hModule) {
            HCURSOR hHandCursor = ::LoadCursor(hModule, MAKEINTRESOURCE(106));
            if (hHandCursor)
                m_hLinkCursor = CopyCursor(hHandCursor);
        }
        FreeLibrary(hModule);
    }
}LONG CHyperLink::GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata)
{
    HKEY hkey;
    LONG retval = RegOpenKeyEx(key, subkey, 0, KEY_QUERY_VALUE, &hkey);    if (retval == ERROR_SUCCESS) {
        long datasize = MAX_PATH;
        TCHAR data[MAX_PATH];
        RegQueryValue(hkey, NULL, data, &datasize);
        lstrcpy(retdata,data);
        RegCloseKey(hkey);
    }    return retval;
}void CHyperLink::ReportError(int nError)
{
    CString str;
    switch (nError) {
        case 0:                      str = "The operating system is out\nof memory or resources."; break;
        case SE_ERR_PNF:              str = "The specified path was not found."; break;
        case SE_ERR_FNF:              str = "The specified file was not found."; break;
        case ERROR_BAD_FORMAT:        str = "The .EXE file is invalid\n(non-Win32 .EXE or error in .EXE image)."; break;
        case SE_ERR_ACCESSDENIED:    str = "The operating system denied\naccess to the specified file."; break;
        case SE_ERR_ASSOCINCOMPLETE:  str = "The filename association is\nincomplete or invalid."; break;
        case SE_ERR_DDEBUSY:          str = "The DDE transaction could not\nbe completed because other DDE transactions\nwere being processed."; break;
        case SE_ERR_DDEFAIL:          str = "The DDE transaction failed."; break;
        case SE_ERR_DDETIMEOUT:      str = "The DDE transaction could not\nbe completed because the request timed out."; break;
        case SE_ERR_DLLNOTFOUND:      str = "The specified dynamic-link library was not found."; break;
        case SE_ERR_NOASSOC:          str = "There is no application associated\nwith the given filename extension."; break;
        case SE_ERR_OOM:              str = "There was not enough memory to complete the operation."; break;
        case SE_ERR_SHARE:            str = "A sharing violation occurred. ";
        default:                      str.Format("Unknown Error (%d) occurred.", nError); break;
    }
    str = "Unable to open hyperlink:\n\n" + str;
    AfxMessageBox(str, MB_ICONEXCLAMATION ¦ MB_OK);
}HINSTANCE CHyperLink::GotoURL(LPCTSTR url, int showcmd)
{
    TCHAR key[MAX_PATH + MAX_PATH];    // First try ShellExecute()
    HINSTANCE result = ShellExecute(NULL, _T("open"), url, NULL,NULL, showcmd);    // If it failed, get the .htm regkey and lookup the program
    if ((UINT)result <= HINSTANCE_ERROR) {        if (GetRegKey(HKEY_CLASSES_ROOT, _T(".htm"), key) == ERROR_SUCCESS) {
            lstrcat(key, _T("\\shell\\open\\command"));            if (GetRegKey(HKEY_CLASSES_ROOT,key,key) == ERROR_SUCCESS) {
                TCHAR *pos;
                pos = _tcsstr(key, _T("\"%1\""));
                if (pos == NULL) {                    // No quotes found
                    pos = strstr(key, _T("%1"));      // Check for %1, without quotes
                    if (pos == NULL)                  // No parameter at all...
                        pos = key+lstrlen(key)-1;
                    else
                        *pos = '\0';                  // Remove the parameter
                }
                else
                    *pos = '\0';                      // Remove the parameter                lstrcat(pos, _T(" "));
                lstrcat(pos, url);
                result = (HINSTANCE) WinExec(key,showcmd);
            }
        }
    }    return result;
}

调试易

如何在vc程序中实现超级连接

解决方案 »