// HyperLink.h : header file // // // HyperLink static control. Will open the default browser with the given URL // when the user clicks on the link. //#if !defined(AFX_HYPERLINK_H__D1625061_574B_11D1_ABBA_00A0243D1382__INCLUDED_) #define AFX_HYPERLINK_H__D1625061_574B_11D1_ABBA_00A0243D1382__INCLUDED_#if _MSC_VER >= 1000 #pragma once #endif // _MSC_VER >= 1000///////////////////////////////////////////////////////////////////////////// // CHyperLink windowclass CHyperLink : public CStatic { // Construction/destruction public: CHyperLink(); virtual ~CHyperLink();public: enum UnderLineOptions { ulHover = -1, ulNone = 0, ulAlways = 1};// Attributes 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(int nUnderline = ulHover); int 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); virtual BOOL DestroyWindow(); 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? int m_nUnderline; // underline hyperlink? BOOL m_bAdjustToFit; // Adjust window size to fit text? CString m_strURL; // hyperlink URL CFont m_UnderlineFont; // Font for underline display CFont m_StdFont; // Standard font HCURSOR m_hLinkCursor; // Cursor for hyperlink CToolTipCtrl m_ToolTip; // The tooltip UINT m_nTimerID; // 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 void OnTimer(UINT nIDEvent); afx_msg BOOL OnEraseBkgnd(CDC* pDC); //}}AFX_MSG afx_msg void OnClicked(); DECLARE_MESSAGE_MAP() };///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}} // Microsoft Developer Studio will insert additional declarations immediately before the previous line.#endif // !defined(AFX_HYPERLINK_H__D1625061_574B_11D1_ABBA_00A0243D1382__INCLUDED_)
#include "stdafx.h" #include "HyperLink.h"#include "atlconv.h" // for Unicode conversion - requires #include <afxdisp.h> // MFC OLE automation classes#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 = RGB(255, 0, 0); // Red m_bOverControl = FALSE; // Cursor not yet over control m_bVisited = FALSE; // Hasn't been visited yet. m_nUnderline = ulHover; // Underline the link? m_bAdjustToFit = TRUE; // Resize the window to fit the text? m_strURL.Empty(); m_nTimerID = 100; }CHyperLink::~CHyperLink() { m_UnderlineFont.DeleteObject(); }///////////////////////////////////////////////////////////////////////////// // CHyperLink overridesBOOL CHyperLink::DestroyWindow() { KillTimer(m_nTimerID);
return CStatic::DestroyWindow(); }BOOL CHyperLink::PreTranslateMessage(MSG* pMsg) { m_ToolTip.RelayEvent(pMsg); return CStatic::PreTranslateMessage(pMsg); } 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); } CFont* pFont = GetFont(); if (!pFont) { HFONT hFont = (HFONT)GetStockObject(DEFAULT_GUI_FONT); if (hFont == NULL) hFont = (HFONT) GetStockObject(ANSI_VAR_FONT); if (hFont) pFont = CFont::FromHandle(hFont); } ASSERT(pFont->GetSafeHandle()); // Create the underline font LOGFONT lf; pFont->GetLogFont(&lf); m_StdFont.CreateFontIndirect(&lf); lf.lfUnderline = (BYTE) TRUE; m_UnderlineFont.CreateFontIndirect(&lf); PositionWindow(); // Adjust size of window to fit URL if necessary SetDefaultCursor(); // Try and load up a "hand" cursor SetUnderline(); // Create the tooltip CRect rect; GetClientRect(rect); m_ToolTip.Create(this); m_ToolTip.AddTool(this, m_strURL, rect, TOOLTIP_ID); CStatic::PreSubclassWindow(); }BEGIN_MESSAGE_MAP(CHyperLink, CStatic) //{{AFX_MSG_MAP(CHyperLink) ON_WM_CTLCOLOR_REFLECT() ON_WM_SETCURSOR() ON_WM_MOUSEMOVE() ON_WM_TIMER() ON_CONTROL_REFLECT(STN_CLICKED, OnClicked) ON_WM_ERASEBKGND() //}}AFX_MSG_MAP END_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////// // CHyperLink message handlersvoid CHyperLink::OnClicked() { m_bOverControl = FALSE; 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) { if (!m_bOverControl) // Cursor has just moved over control { m_bOverControl = TRUE; if (m_nUnderline == ulHover) SetFont(&m_UnderlineFont); Invalidate(); SetTimer(m_nTimerID, 100, NULL); } CStatic::OnMouseMove(nFlags, point); }void CHyperLink::OnTimer(UINT nIDEvent) { CPoint p(GetMessagePos()); ScreenToClient(&p); CRect rect; GetClientRect(rect); if (!rect.PtInRect(p)) { m_bOverControl = FALSE; KillTimer(m_nTimerID); if (m_nUnderline != ulAlways) SetFont(&m_StdFont); rect.bottom+=10; InvalidateRect(rect); }
void CHyperLink::PositionWindow() { if (!::IsWindow(GetSafeHwnd()) || !m_bAdjustToFit) return; // Get the current window position CRect WndRect, ClientRect; GetWindowRect(WndRect); GetClientRect(ClientRect); ClientToScreen(ClientRect); CWnd* pParent = GetParent(); if (pParent) { pParent->ScreenToClient(WndRect); pParent->ScreenToClient(ClientRect); } // Get the size of the window text CString strWndText; GetWindowText(strWndText); CDC* pDC = GetDC(); CFont* pOldFont = pDC->SelectObject(&m_UnderlineFont); CSize Extent = pDC->GetTextExtent(strWndText); pDC->SelectObject(pOldFont); ReleaseDC(pDC); // Adjust for window borders Extent.cx += WndRect.Width() - ClientRect.Width(); Extent.cy += WndRect.Height() - ClientRect.Height(); // 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) WndRect.DeflateRect(0, (WndRect.Height() - Extent.cy)/2); else WndRect.bottom = WndRect.top + Extent.cy; if (dwStyle & SS_CENTER) WndRect.DeflateRect((WndRect.Width() - Extent.cx)/2, 0); else if (dwStyle & SS_RIGHT) WndRect.left = WndRect.right - Extent.cx; else // SS_LEFT = 0, so we can't test for it explicitly WndRect.right = WndRect.left + Extent.cx; // Move the window SetWindowPos(NULL, WndRect.left, WndRect.top, WndRect.Width(), WndRect.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(_T("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 = _tcsstr(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); USES_CONVERSION; result = (HINSTANCE) WinExec(T2A(key),showcmd); } } } return result; }
//
//
// HyperLink static control. Will open the default browser with the given URL
// when the user clicks on the link.
//#if !defined(AFX_HYPERLINK_H__D1625061_574B_11D1_ABBA_00A0243D1382__INCLUDED_)
#define AFX_HYPERLINK_H__D1625061_574B_11D1_ABBA_00A0243D1382__INCLUDED_#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000/////////////////////////////////////////////////////////////////////////////
// CHyperLink windowclass CHyperLink : public CStatic
{
// Construction/destruction
public:
CHyperLink();
virtual ~CHyperLink();public:
enum UnderLineOptions { ulHover = -1, ulNone = 0, ulAlways = 1};// Attributes
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(int nUnderline = ulHover);
int 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);
virtual BOOL DestroyWindow();
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?
int m_nUnderline; // underline hyperlink?
BOOL m_bAdjustToFit; // Adjust window size to fit text?
CString m_strURL; // hyperlink URL
CFont m_UnderlineFont; // Font for underline display
CFont m_StdFont; // Standard font
HCURSOR m_hLinkCursor; // Cursor for hyperlink
CToolTipCtrl m_ToolTip; // The tooltip
UINT m_nTimerID; // 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 void OnTimer(UINT nIDEvent);
afx_msg BOOL OnEraseBkgnd(CDC* pDC);
//}}AFX_MSG
afx_msg void OnClicked();
DECLARE_MESSAGE_MAP()
};///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.#endif // !defined(AFX_HYPERLINK_H__D1625061_574B_11D1_ABBA_00A0243D1382__INCLUDED_)
#include "HyperLink.h"#include "atlconv.h" // for Unicode conversion - requires #include <afxdisp.h> // MFC OLE automation classes#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 = RGB(255, 0, 0); // Red
m_bOverControl = FALSE; // Cursor not yet over control
m_bVisited = FALSE; // Hasn't been visited yet.
m_nUnderline = ulHover; // Underline the link?
m_bAdjustToFit = TRUE; // Resize the window to fit the text?
m_strURL.Empty();
m_nTimerID = 100;
}CHyperLink::~CHyperLink()
{
m_UnderlineFont.DeleteObject();
}/////////////////////////////////////////////////////////////////////////////
// CHyperLink overridesBOOL CHyperLink::DestroyWindow()
{
KillTimer(m_nTimerID);
return CStatic::DestroyWindow();
}BOOL CHyperLink::PreTranslateMessage(MSG* pMsg)
{
m_ToolTip.RelayEvent(pMsg);
return CStatic::PreTranslateMessage(pMsg);
}
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);
} CFont* pFont = GetFont();
if (!pFont)
{
HFONT hFont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
if (hFont == NULL)
hFont = (HFONT) GetStockObject(ANSI_VAR_FONT);
if (hFont)
pFont = CFont::FromHandle(hFont);
}
ASSERT(pFont->GetSafeHandle()); // Create the underline font
LOGFONT lf;
pFont->GetLogFont(&lf);
m_StdFont.CreateFontIndirect(&lf);
lf.lfUnderline = (BYTE) TRUE;
m_UnderlineFont.CreateFontIndirect(&lf); PositionWindow(); // Adjust size of window to fit URL if necessary
SetDefaultCursor(); // Try and load up a "hand" cursor
SetUnderline(); // Create the tooltip
CRect rect;
GetClientRect(rect);
m_ToolTip.Create(this);
m_ToolTip.AddTool(this, m_strURL, rect, TOOLTIP_ID); CStatic::PreSubclassWindow();
}BEGIN_MESSAGE_MAP(CHyperLink, CStatic)
//{{AFX_MSG_MAP(CHyperLink)
ON_WM_CTLCOLOR_REFLECT()
ON_WM_SETCURSOR()
ON_WM_MOUSEMOVE()
ON_WM_TIMER()
ON_CONTROL_REFLECT(STN_CLICKED, OnClicked)
ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CHyperLink message handlersvoid CHyperLink::OnClicked()
{
m_bOverControl = FALSE;
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)
{
if (!m_bOverControl) // Cursor has just moved over control
{
m_bOverControl = TRUE; if (m_nUnderline == ulHover)
SetFont(&m_UnderlineFont);
Invalidate(); SetTimer(m_nTimerID, 100, NULL);
}
CStatic::OnMouseMove(nFlags, point);
}void CHyperLink::OnTimer(UINT nIDEvent)
{
CPoint p(GetMessagePos());
ScreenToClient(&p); CRect rect;
GetClientRect(rect);
if (!rect.PtInRect(p))
{
m_bOverControl = FALSE;
KillTimer(m_nTimerID); if (m_nUnderline != ulAlways)
SetFont(&m_StdFont);
rect.bottom+=10;
InvalidateRect(rect);
}
CStatic::OnTimer(nIDEvent);
}BOOL CHyperLink::OnSetCursor(CWnd* /*pWnd*/, UINT /*nHitTest*/, UINT /*message*/)
{
if (m_hLinkCursor)
{
::SetCursor(m_hLinkCursor);
return TRUE;
}
return FALSE;
}BOOL CHyperLink::OnEraseBkgnd(CDC* pDC)
{
CRect rect;
GetClientRect(rect);
pDC->FillSolidRect(rect, ::GetSysColor(COLOR_3DFACE)); return TRUE;
}/////////////////////////////////////////////////////////////////////////////
// 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(int nUnderline /*=ulHover*/)
{
if (m_nUnderline == nUnderline)
return; if (::IsWindow(GetSafeHwnd()))
{
if (nUnderline == ulAlways)
SetFont(&m_UnderlineFont);
else
SetFont(&m_StdFont); Invalidate();
} m_nUnderline = nUnderline;
}int CHyperLink::GetUnderline() const
{
return m_nUnderline;
}void CHyperLink::SetAutoSize(BOOL bAutoSize /* = TRUE */)
{
m_bAdjustToFit = bAutoSize; if (::IsWindow(GetSafeHwnd()))
PositionWindow();
}BOOL CHyperLink::GetAutoSize() const
{
return m_bAdjustToFit;
}
{
if (!::IsWindow(GetSafeHwnd()) || !m_bAdjustToFit)
return; // Get the current window position
CRect WndRect, ClientRect;
GetWindowRect(WndRect);
GetClientRect(ClientRect); ClientToScreen(ClientRect); CWnd* pParent = GetParent();
if (pParent)
{
pParent->ScreenToClient(WndRect);
pParent->ScreenToClient(ClientRect);
} // Get the size of the window text
CString strWndText;
GetWindowText(strWndText); CDC* pDC = GetDC();
CFont* pOldFont = pDC->SelectObject(&m_UnderlineFont);
CSize Extent = pDC->GetTextExtent(strWndText);
pDC->SelectObject(pOldFont);
ReleaseDC(pDC); // Adjust for window borders
Extent.cx += WndRect.Width() - ClientRect.Width();
Extent.cy += WndRect.Height() - ClientRect.Height(); // 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)
WndRect.DeflateRect(0, (WndRect.Height() - Extent.cy)/2);
else
WndRect.bottom = WndRect.top + Extent.cy; if (dwStyle & SS_CENTER)
WndRect.DeflateRect((WndRect.Width() - Extent.cx)/2, 0);
else if (dwStyle & SS_RIGHT)
WndRect.left = WndRect.right - Extent.cx;
else // SS_LEFT = 0, so we can't test for it explicitly
WndRect.right = WndRect.left + Extent.cx; // Move the window
SetWindowPos(NULL, WndRect.left, WndRect.top, WndRect.Width(), WndRect.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(_T("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 = _tcsstr(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); USES_CONVERSION;
result = (HINSTANCE) WinExec(T2A(key),showcmd);
}
}
} return result;
}