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最新推荐文章于 2022-06-28 15:11:37 发布

原创最新推荐文章于 2022-06-28 15:11:37 发布 · 831 阅读

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文章标签：

#null #path #file #hyperlink #url #exception

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void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
DDX_Control(pDX,IDC_STATIC_SDU,ctlSDU);
DDX_Control(pDX,IDC_STATIC_YJM,ctlYJM);
DDX_Control(pDX, IDC_WWW, m_www);
//}}AFX_DATA_MAP
}

//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
CUrlLink ctlSDU;
CUrlLink ctlYJM;
CUrlLink m_www;
//}}AFX_DATA

BOOL CAboutDlg::OnInitDialog()
{
CDialog::OnInitDialog();

ctlSDU.SetURL("http://www.sdu1.edu.cn");
ctlYJM.SetURL("mailto:jmye1@sohu.com");
m_www.SetURL("http://www.163.com");
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}

===========================

// UrlLink.cpp : implementation file
//

#include "stdafx.h"
#include "UrlLink.h"

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

#define TOOLTIP_ID 1
/////////////////////////////////////////////////////////////////////////////
// CUrlLink

CUrlLink::CUrlLink()
{
    m_hLinkCursor       = NULL;                 // No cursor as yet
    m_crLinkColour      = RGB( 0,   255, 0);   // Blue
    m_crVisitedColour   = RGB( 255, 255, 0);   // Purple
    m_crHoverColour     = ::GetSysColor(COLOR_HIGHLIGHT);
    m_bOverControl      = FALSE;                // Cursor not yet over control
    m_bVisited          = FALSE;                // Hasn't been visited yet.
    m_bUnderline        = FALSE;                 // Underline the link?
    m_bAdjustToFit      = TRUE;                 // Resize the window to fit the text?
    m_strURL.Empty();

}

CUrlLink::~CUrlLink()
{
m_Font.DeleteObject();
}

BEGIN_MESSAGE_MAP(CUrlLink, CStatic)
//{{AFX_MSG_MAP(CUrlLink)
ON_WM_CTLCOLOR_REFLECT()
ON_WM_SETCURSOR()
ON_WM_MOUSEMOVE()
ON_CONTROL_REFLECT(BN_CLICKED, OnClicked)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUrlLink message handlers
void CUrlLink::SetURL(CString strURL)
{
m_strURL = strURL;

    if (::IsWindow(GetSafeHwnd())) {
        PositionWindow();
        m_ToolTip.UpdateTipText(strURL, this, TOOLTIP_ID);
    }
//美女淑女
}
CString CUrlLink::GetURL() const
{
    return m_strURL;

}

void CUrlLink::SetColours(COLORREF crLinkColour, COLORREF crVisitedColour,
                    COLORREF crHoverColour)
{
    m_crLinkColour    = crLinkColour;
    m_crVisitedColour = crVisitedColour;

if (crHoverColour == -1)
m_crHoverColour = ::GetSysColor(COLOR_HIGHLIGHT);
else
m_crHoverColour = crHoverColour;

if (::IsWindow(m_hWnd))
Invalidate();

}

COLORREF CUrlLink::GetLinkColour() const
{
return m_crLinkColour;

}

COLORREF CUrlLink::GetVisitedColour() const
{
return m_crVisitedColour;
}

COLORREF CUrlLink::GetHoverColour() const
{
return m_crHoverColour;
}

void CUrlLink::SetVisited(BOOL bVisited)
{
m_bVisited = bVisited;

if (::IsWindow(GetSafeHwnd()))
Invalidate();
}

BOOL CUrlLink::GetVisited() const
{
return m_bVisited;
}

void CUrlLink::SetLinkCursor(HCURSOR hCursor)
{
    m_hLinkCursor = hCursor;
    if (m_hLinkCursor == NULL)
        SetDefaultCursor(); // create hand shape cursor
}

HCURSOR CUrlLink::GetLinkCursor() const
{
return m_hLinkCursor;
}

void CUrlLink::SetUnderline(BOOL bUnderline)
{
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 CUrlLink::GetUnderline() const
{
return m_bUnderline;
}

void CUrlLink::SetAutoSize(BOOL bAutoSize)
{
m_bAdjustToFit = bAutoSize;

if (::IsWindow(GetSafeHwnd()))
PositionWindow();
}

BOOL CUrlLink::GetAutoSize() const
{
return m_bAdjustToFit;
}

BOOL CUrlLink::PreTranslateMessage(MSG* pMsg)
{
m_ToolTip.RelayEvent(pMsg);
return CStatic::PreTranslateMessage(pMsg);
}

void CUrlLink::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();
}

HINSTANCE CUrlLink::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;
}

void CUrlLink::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);
}

LONG CUrlLink::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 CUrlLink::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);

}

// Get the hand cursor from resource in .exe file
void CUrlLink::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);
    }
}

HBRUSH CUrlLink::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);
}

BOOL CUrlLink::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
    if (m_hLinkCursor)
    {
        ::SetCursor(m_hLinkCursor);
        return TRUE;
    }
    return FALSE;
}

void CUrlLink::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();
    }
}

void CUrlLink::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
}