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            在VC中為應(yīng)用程序添加圖形超鏈接功能

            目前很多windows軟件的版權(quán)對話框中都設(shè)有超級鏈接,這些鏈接或提供公司網(wǎng)址,或提供電子郵件信箱,使操作者能夠非常方便地與公司和作者聯(lián)系,同時也為公司作了很好的宣傳。一般情況下,界面上某行文字下面有一行藍色的橫線,標志該字符串提供超鏈接功能,當用戶將鼠標移動到文字上時,鼠標變成手狀,如果用戶此時單擊鼠標,程序?qū)訛g覽器打開某個網(wǎng)頁或啟動OutLook讓用戶給指定的郵箱發(fā)送電子郵件。如果能在自己寫的軟件中實現(xiàn)這個功能,定會使程序大增光彩。本實例通過定義一個CmapHyperLink類實現(xiàn)了圖像的超鏈接功能

              一、 實現(xiàn)方法

              著名的CHyperLink類只能提供文字鏈接,不能用于圖形控件的超鏈接,于是本實例在其基礎(chǔ)上修改了一下,定義了一個CMapHyperLink類,該類現(xiàn)在只對圖形控件(picture control)生效。用戶可使用成員函數(shù)void SetURL(CString strURL)設(shè)置要訪問的互聯(lián)網(wǎng)地址,如SetURL("http://www.google.com");使用成員函數(shù)void SetTipText(CString strURL)設(shè)置超鏈接提示條(CToolTipCtrl)的文字內(nèi)容,如果不在此設(shè)置,那就默認是您設(shè)置的URL地址,如SetTipText("歡迎訪問強大的google搜索");使用成員函數(shù)void SetLinkCursor(HCURSOR hCursor)設(shè)置鼠標在超鏈接狀態(tài)的圖標,默認是手型圖標。該類還提供了HCURSOR GetLinkCursor() const、void SetAutoSize(BOOL bAutoSize = TRUE)等成員函數(shù),提供了一些相應(yīng)的輔助功能,讀者朋友可以參考代碼部分。這里主要講述三個主要的問題:一是如何實現(xiàn)提示功能;二是在控件上如何改變鼠標的形狀,給用戶提供另外一種暗示-當前區(qū)域提供超鏈接功能;三是如何根據(jù)網(wǎng)頁或信箱地址啟動超鏈接功能。

              Visual C++提供了CCtoolTipCtrl類用來實現(xiàn)提示功能。工具提示控制是一個小窗口,在其中顯示單行文字用以描述應(yīng)用程序中的工具的用途。這里的工具所指的既可以是窗口(如工具欄上的按鈕),也可以是一個固定的區(qū)域。大家都知道利用APPWIZARD生成 的應(yīng)用程序中工具欄帶有提示,當你將鼠標放在工具欄某一個按鈕上時,將顯示一個小提示框告訴你按鈕的功能,這種功能方便了軟件的使用者。但是在超鏈接區(qū)如何實現(xiàn)提示呢?首先聲明一個CtoolTipCtrl類的變量,調(diào)用Create()成員函數(shù)創(chuàng)建通用工具提示,并將它附在CtoolTipCtrl對象上,然后調(diào)用CtoolTipCtrl類的AddToo()成員函數(shù)注冊工具提示控制,從而為光標放在規(guī)定的窗口或區(qū)域內(nèi)時顯示工具提示做準備。該函數(shù)的原形為:

            BOOL AddTool( CWnd* pWnd,LPCTSTR lpszText, LPCRECT lpRectTool,UINT nIDTOOL );

              其中參數(shù)pWnd為指向包含工具提示控制的窗口指針,參數(shù)lpszText為所要在工具提示中顯示的文字,參數(shù)lpRectTool為工具書提示所對應(yīng)的窗口或規(guī)定區(qū)域,參數(shù)nIDTOOL為工具提示的標志號。

              在調(diào)用CtoolTipCtrl類的Active()函數(shù)激活提示后,最后要作的工作是調(diào)用CtoolTipCtrl類的RelayEvent()函數(shù)將鼠標的WM_LBUTTONDOWN、WM_MOUSEMOVE、WM_LBUTTONUP等消息傳遞給工具提示控制對象,以便控件進行提示處理。

              下面的代碼實現(xiàn)了在應(yīng)用程序的視圖區(qū)顯示對應(yīng)點的坐標為例:

            //在文件頭定義的全局變量
            CToolTipCtrl m_ToolTip;//工具提示對象
            char string[50];//用來存放提示文字
            CRect rect;//用來存放工具提示所對應(yīng)的窗口的尺寸
            #define IDC_CONST 12345//定義的工具提示標志號,注意不要和系統(tǒng)沖突
            void CTestView::OnMouseMove(UINT nFlags, CPoint point)
            {
             // TODO: Add your message handler code here and/or call default
             wsprintf(string,"%d,%d",point.x,point.y);
             GetClientRect(&recty);
             m_ToolTip.AddTool(this,string,&rect,IDC_CONST);
             m_ToolTip.Activate(TRUE);
             CView::OnMouseMove(nFlags, point);
            }
             LRESULT CTestView::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
            {
             // TODO: Add your specialized code here and/or call the base class
             switch(message)
              {case WM_LBUTTONDOWN:
               case WM_RBUTTONDOWN:
               case WM_MBUTTONDOWN:
               case WM_LBUTTONUP:
               case WM_MBUTTONUP:
               case WM_RBUTTONUP:
               case WM_MOUSEMOVE:
               {MSG msg;
                msg.hwnd=m_hWnd;
                msg.message=message;
                msg.wParam=wParam;
                msg.lParam=lParam;
                m_ToolTip.RelayEvent(&msg);
               }
              }
              return CView::WindowProc(message, wParam, lParam);
            }

              如果用戶想動態(tài)的改變提示字符串,可以調(diào)用CtoolTipCtrl類的成員函數(shù)UpdateTipText()來實現(xiàn),該函數(shù)的原型為:

            void UpdateTipText( LPCTSTR lpszText, CWnd* pWnd, UINT nIDTool = 0 );

              該函數(shù)的參數(shù)的含義與成員函數(shù)AddTool()的參數(shù)的含義大同小異,這里不再贅述。

              對于超鏈接來說,一般會在超鏈接區(qū)域改變鼠標的形狀,顯示手狀的鼠標,提示這是一個超鏈接區(qū)域。當然可以在程序中添加一個手狀的光標資源,然后使用LoadCursor()函數(shù)等加載,這種方法對廣大讀者朋友一定是耳熟能詳了,所以為了擴大讀者朋友的編程思路,這里介紹一種從Windows的winhlp32.exe文件中加載光標資源,代碼如下:

            void CMapHyperLink::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);
             }
            }

              為了根據(jù)網(wǎng)頁或信箱地址實現(xiàn)超鏈接功能,需要用到一個WINDOWS API函數(shù)ShellExecute(),其原型為:

            HINSTANCE ShellExecute(
             HWND hwnd, //窗口句柄
             LPCTSTR lpOperation, //操作類型
             LPCTSTR lpFile, //文件指針
             LPCTSTR lpParameters, //文件可帶的參數(shù)
             LPCTSTR lpDirectory, //缺省目錄
             INT nShowCmd //顯示方式
            );

              ShellExecute()函數(shù)用于打開或執(zhí)行一個文件,在調(diào)用此函數(shù)時只須指定要打開或執(zhí)行的文件名,而不必管用什么程序去打開或執(zhí)行文件,WINDOWS會自動根據(jù)要打開或執(zhí)行的文件去判斷該如何執(zhí)行文件或用什么程序去打開文件。函數(shù)中的參數(shù)lpOperation說明所要執(zhí)行的操作,該值可以設(shè)置為"Open"、"Print"、"Explore",分別用來進行"打開"、"打印"、"瀏覽"操作。下面給出了ShellExecute()函數(shù)的一些使用方法:

             ?。?)打開一個應(yīng)用程序:

            ShellExecute(this->m_hWnd,"open","calc.exe","","", SW_SHOW );

            ShellExecute(this->m_hWnd,"open","notepad.exe", "c:\MyLog.log","",SW_SHOW );

             ?。?)打開一個同系統(tǒng)程序相關(guān)連的文檔

            ShellExecute(this->m_hWnd,"open", "c:\abc.txt","","",SW_SHOW );

             ?。?)打開一個網(wǎng)頁

            ShellExecute(this->m_hWnd,"open", " http://www.google.com","","",/ SW_SHOW );

             ?。?)激活相關(guān)程序,發(fā)送EMAIL

            ShellExecute(this->m_hWnd,"open","mailto:nishinapp@yahoo.com","","", W_SHOW );

              (5)用系統(tǒng)打印機打印文檔

            ShellExecute(this->m_hWnd,"print", "c:\abc.txt","","", SW_HIDE);

              (6)用系統(tǒng)查找功能來查找指定文件

            ShellExecute(m_hWnd,"find","d:\nish", NULL,NULL,SW_SHOW);

              (7)啟動一個程序,直到它運行結(jié)束

            SHELLEXECUTEINFO ShExecInfo = {0};
            ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
            ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
            ShExecInfo.hwnd = NULL;
            ShExecInfo.lpVerb = NULL;
            ShExecInfo.lpFile = "c:\MyProgram.exe";
            ShExecInfo.lpParameters = "";
            ShExecInfo.lpDirectory = NULL;
            ShExecInfo.nShow = SW_SHOW;
            ShExecInfo.hInstApp = NULL;
            ShellExecuteEx(&ShExecInfo);
            WaitForSingleObject(ShExecInfo.hProcess,INFINITE);
            或:
            PROCESS_INFORMATION ProcessInfo;
            STARTUPINFO StartupInfo; //This is an [in] parameter
            ZeroMemory(&StartupInfo, sizeof(StartupInfo));
            StartupInfo.cb = sizeof StartupInfo ; //Only compulsory field
            if(CreateProcess("c:\winnt\notepad.exe", NULL,
            NULL,NULL,FALSE,0,NULL,
            NULL,&StartupInfo,&ProcessInfo))
            {
             WaitForSingleObject(ProcessInfo.hProcess,INFINITE);
             CloseHandle(ProcessInfo.hThread);
             CloseHandle(ProcessInfo.hProcess);
            }
            else
            {
             MessageBox("The process could not be started...");
            }

             ?。?)顯示文件或文件夾的屬性

            SHELLEXECUTEINFO ShExecInfo ={0};
            ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
            ShExecInfo.fMask = SEE_MASK_INVOKEIDLIST ;
            ShExecInfo.hwnd = NULL;
            ShExecInfo.lpVerb = "properties";
            ShExecInfo.lpFile = "c:"; //can be a file as well
            ShExecInfo.lpParameters = "";
            ShExecInfo.lpDirectory = NULL;
            ShExecInfo.nShow = SW_SHOW;
            ShExecInfo.hInstApp = NULL;
            ShellExecuteEx(&ShExecInfo);

              Windows還提供了一個與ShellExecuteEx()函數(shù)相類似的函數(shù)WinExec(),它相對于ShellExecuteEx()來說更簡單易用,只是功能沒有它強大而已,具體使用方法讀者朋友自行參閱MSDN。

              二、編程步驟

              l、啟動Visual C++6.0,生成一個基于對話框的應(yīng)用程序,將該程序命名為"Test";

              2、在對話框上放置一個靜態(tài)控件,并顯示一幅圖象;

              3、使用Class Wizard為應(yīng)用程序添加一個CMapHyperLink類,其基類為CStatic;

              4、在對話框中添加一個CmapHyperLink類對象m_MapHyperLink1;

              5、添加代碼,編譯運行程序。


              三、程序代碼

            /////////////////////////////////////////////////////////////////////////
            //MapHyperLink.h , MapHyperLink.cpp
            #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 window
            class CMapHyperLink : public CStatic
            {
             // Construction/destruction
             public:
              CMapHyperLink();
              virtual ~CMapHyperLink();
             public:
              void SetURL(CString strURL);
              CString GetURL() const;
              void SetTipText(CString strURL);
              CString GetTipText() const;
              void SetVisited(BOOL bVisited = TRUE);
              BOOL GetVisited() const;
              void SetLinkCursor(HCURSOR hCursor);
              HCURSOR GetLinkCursor() 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:
              BOOL m_bOverControl; // cursor over control?
              BOOL m_bVisited; // Has it been visited?
              BOOL m_bAdjustToFit; // Adjust window size to fit text?
              CString m_strURL; // hyperlink URL
              CString m_strTipText; // TipTool control'' text
              HCURSOR m_hLinkCursor; // Cursor for hyperlink
              CToolTipCtrl m_ToolTip; // The tooltip
             protected: // Generated message map functions
              //{{AFX_MSG(CHyperLink)
               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()
            };
            #endif

            ///////////////////////////////////////////////////////////// MapHyperLink.cpp
            #include "stdafx.h"
            #include "MapHyperLink.h"
            #ifdef _DEBUG
            #define new DEBUG_NEW
            #undef THIS_FILE
            static char THIS_FILE[] = __FILE__;
            #endif
            #define TOOLTIP_ID 1

            CMapHyperLink::CMapHyperLink()
            {
             m_hLinkCursor = NULL; // No cursor as yet
             m_bOverControl = FALSE; // Cursor not yet over control
             m_bVisited = FALSE; // Hasn''t been visited yet.
             m_bAdjustToFit = TRUE; // Resize the window to fit the text?
             m_strURL.Empty();
             m_strTipText.Empty();
            }

            CMapHyperLink::~CMapHyperLink()
            {}

            BEGIN_MESSAGE_MAP(CMapHyperLink, CStatic)
            //{{AFX_MSG_MAP(CMapHyperLink)
             ON_CONTROL_REFLECT(STN_CLICKED, OnClicked)
             ON_WM_SETCURSOR()
             ON_WM_MOUSEMOVE()
            //}}AFX_MSG_MAP
            END_MESSAGE_MAP()

            // CMapHyperLink message handlers
            BOOL CMapHyperLink::PreTranslateMessage(MSG* pMsg)
            {
             m_ToolTip.RelayEvent(pMsg);
             return CStatic::PreTranslateMessage(pMsg);
            }

            void CMapHyperLink::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
            }

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

            void CMapHyperLink::PreSubclassWindow()
            {
             // We want to get mouse clicks via STN_CLICKED
             DWORD dwStyle = GetStyle();
             ::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle | SS_NOTIFY);
             SetDefaultCursor(); // Try and load up a "hand" cursor
             // Create the tooltip
             CRect rect;
             GetClientRect(rect);
             m_ToolTip.Create(this);
             if (m_strTipText.IsEmpty())
             {
              m_strTipText = m_strURL;
             }
             m_ToolTip.AddTool(this, m_strTipText, rect, TOOLTIP_ID);
             CStatic::PreSubclassWindow();
            }

            ////////////////////////////////////////////// CMapHyperLink operations
            void CMapHyperLink::SetURL(CString strURL)
            {
             m_strURL = strURL;
             if (::IsWindow(GetSafeHwnd())) {
              PositionWindow();
              if (m_strTipText.IsEmpty())
              {
               m_strTipText = strURL;
              }
              m_ToolTip.UpdateTipText(m_strTipText, this, TOOLTIP_ID);
             }
            }

            CString CMapHyperLink::GetURL() const
            {
             return m_strURL;
            }

            void CMapHyperLink::SetTipText(CString strTipText)
            {
             m_strTipText = strTipText;
             if (::IsWindow(GetSafeHwnd())) {
              PositionWindow();
              m_ToolTip.UpdateTipText(m_strTipText, this, TOOLTIP_ID);
             }
            }

            CString CMapHyperLink::GetTipText() const
            {
             return m_strTipText;
            }

            void CMapHyperLink::SetVisited(BOOL bVisited /* = TRUE */)
            {
             m_bVisited = bVisited;
             if (::IsWindow(GetSafeHwnd()))
              Invalidate();
            }

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

            void CMapHyperLink::SetLinkCursor(HCURSOR hCursor)
            {
             m_hLinkCursor = hCursor;
             if (m_hLinkCursor == NULL)
              SetDefaultCursor();
            }

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

            void CMapHyperLink::SetAutoSize(BOOL bAutoSize /* = TRUE */)
            {
             m_bAdjustToFit = bAutoSize;
             if (::IsWindow(GetSafeHwnd()))
              PositionWindow();
            }

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

            // Move and resize the window so that the window is the same size
            void CMapHyperLink::PositionWindow()
            {
             if (!::IsWindow(GetSafeHwnd()) || !m_bAdjustToFit)
              return;
             // Get the current window position
             CRect rect;
             GetWindowRect(rect);
             CWnd* pParent = GetParent();
             if (pParent)
              pParent->ScreenToClient(rect);
             CRect rectMap;
             GetClientRect(rectMap);
             // 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() - rectMap.Height())/2);
             else
              rect.bottom = rect.top + rectMap.Height();
              if (dwStyle & SS_CENTER)
               rect.DeflateRect((rect.Width() - rectMap.Width())/2, 0);
              else if (dwStyle & SS_RIGHT)
               rect.left = rect.right - rectMap.Width();
              else // SS_LEFT = 0, so we can''t test for it explicitly
               rect.right = rect.left + rectMap.Width();
               // Move the window
              SetWindowPos(NULL, rect.left, rect.top, rect.Width(), rect.Height(), SWP_NOZORDER);
            }

            /////////////////////////////////////////////////// CMapHyperLink implementation
            void CMapHyperLink::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 CMapHyperLink::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 CMapHyperLink::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 CMapHyperLink::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;
            }
            /////////////////////////////////////////////////////////////////////////////////////

            BOOL CTestDlg::OnInitDialog()
            {
             CDialog::OnInitDialog();
             // Set the icon for this dialog. The framework does this automatically
             // when the application''s main window is not a dialog
             SetIcon(m_hIcon, TRUE); // Set big icon
             SetIcon(m_hIcon, FALSE); // Set small icon
             //設(shè)置圖形的超鏈接
             m_MapHyperLink1.SetURL("www.yesky.com");
             m_MapHyperLink1.SetTipText("歡迎訪問天極網(wǎng)");
             // TODO: Add extra initialization here
             return TRUE; // return TRUE unless you set the focus to a control
            }

              四、小結(jié)

              本實例通過介紹如何實現(xiàn)超鏈接功能,介紹了工具提示、動態(tài)地從可執(zhí)行文件中加載圖標、使用外殼函數(shù)ShellExecute()等知識,甚至還包括注冊表的操作等內(nèi)容,應(yīng)該說雖然程序比較簡單,但包含的內(nèi)容還是比較豐富的。最后,運行此程序,將在對話框上顯示"天極網(wǎng)"的首頁鏈接,在圖像上點鼠標左鍵后將自動進入天極網(wǎng)首頁,效果很理想。

            posted on 2008-04-28 16:02 wrh 閱讀(562) 評論(0)  編輯 收藏 引用


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