www.gusucode.com > VC课堂的作品MP3音频播放器-源码程序 > VC课堂的作品MP3音频播放器-源码程序/code/mciplayer/HyperLink.cpp
//Download by http://www.NewXing.com #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 ///////////////////////////////////////////////////////////////////////////// // CHyperLink CHyperLink::CHyperLink() { //链接时光标 m_hLinkCursor = NULL; //链接时的颜色 m_crLinkColour = RGB( 0, 0, 238); //已访问过的颜色 m_crVisitedColour = RGB( 85, 26, 139); //位于控件上方的颜色 m_crHoverColour = ::GetSysColor(COLOR_HIGHLIGHT); //鼠标在控件上方 m_bOverControl = FALSE; //已访问过url m_bVisited = FALSE; //超链接地址的下划线 m_bUnderline = TRUE; //调整窗口的大小 m_bAdjustToFit = TRUE; //存放url的字符串 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() ///////////////////////////////////////////////////////////////////////////// //消息响应函数 //延时发送消息 BOOL CHyperLink::PreTranslateMessage(MSG* pMsg) { //延时发送消息 m_ToolTip.RelayEvent(pMsg); return CStatic::PreTranslateMessage(pMsg); } //点击链接地址事件 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 //url设为已经被访问过的状态 SetVisited(); } //重画控件事件 HBRUSH CHyperLink::CtlColor(CDC* pDC, UINT nCtlColor) { //保证控件具有可画性 ASSERT(nCtlColor == CTLCOLOR_STATIC); if (m_bOverControl) pDC->SetTextColor(m_crHoverColour); else if (m_bVisited) pDC->SetTextColor(m_crVisitedColour); else pDC->SetTextColor(m_crLinkColour); // 设置控件为透明模式 pDC->SetBkMode(TRANSPARENT); return (HBRUSH)GetStockObject(NULL_BRUSH); } //鼠标移动事件 void CHyperLink::OnMouseMove(UINT nFlags, CPoint point) { CStatic::OnMouseMove(nFlags, point); //鼠标目前正处于url上方 if (m_bOverControl) { 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(); } } //设置鼠标光标的形状 BOOL CHyperLink::OnSetCursor(CWnd* /*pWnd*/, UINT /*nHitTest*/, UINT /*message*/) { if (m_hLinkCursor) { ::SetCursor(m_hLinkCursor); return TRUE; } return FALSE; } void CHyperLink::PreSubclassWindow() { //通过stn的点击事件获取鼠标的移动 DWORD dwStyle = GetStyle(); ::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle | SS_NOTIFY); //将url设置为提示信息栏的文本 if (m_strURL.IsEmpty()) GetWindowText(m_strURL); //检查提示栏中的文本是否为空,如果不是,则作为url地址. CString strWndText; GetWindowText(strWndText); if (strWndText.IsEmpty()) { ASSERT(!m_strURL.IsEmpty()); SetWindowText(m_strURL); } //创建字体,加上下划线 LOGFONT lf; GetFont()->GetLogFont(&lf); lf.lfUnderline = m_bUnderline; m_Font.CreateFontIndirect(&lf); SetFont(&m_Font); PositionWindow(); // 调整窗口的形状,以便能容纳下url地址 SetDefaultCursor(); // 设置鼠标光标的形状为手状 //创建提示栏 CRect rect; GetClientRect(rect); m_ToolTip.Create(this); m_ToolTip.AddTool(this, m_strURL, rect, TOOLTIP_ID); CStatic::PreSubclassWindow(); } ///////////////////////////////////////////////////////////////////////////// // CHyperLink operations //成员函数 //设置url void CHyperLink::SetURL(CString strURL) { m_strURL = strURL; if (::IsWindow(GetSafeHwnd())) { //调整窗口大小以便适应url文本 PositionWindow(); m_ToolTip.UpdateTipText(strURL, this, TOOLTIP_ID); } } //获取url地址 CString CHyperLink::GetURL() const { return m_strURL; } //设置url在不同状态下的颜色 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. void CHyperLink::PositionWindow() { if (!::IsWindow(GetSafeHwnd()) || !m_bAdjustToFit) return; //获取当前窗口的位置 CRect rect; GetWindowRect(rect); CWnd* pParent = GetParent(); if (pParent) pParent->ScreenToClient(rect); //获取窗口的文本 CString strWndText; GetWindowText(strWndText); CDC* pDC = GetDC(); CFont* pOldFont = pDC->SelectObject(&m_Font); CSize Extent = pDC->GetTextExtent(strWndText); pDC->SelectObject(pOldFont); ReleaseDC(pDC); //获取窗口的类型 DWORD dwStyle = GetStyle(); //根据窗口的类型,重新计算窗口的大小和位置 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 rect.right = rect.left + Extent.cx; //移动窗口 SetWindowPos(NULL, rect.left, rect.top, rect.Width(), rect.Height(), SWP_NOZORDER); } ///////////////////////////////////////////////////////////////////////////// // CHyperLink implementation //设置手形鼠标光标 void CHyperLink::SetDefaultCursor() { if (m_hLinkCursor == NULL) //自定义鼠标光标 { // 获取窗口的目录 CString strWndDir; GetWindowsDirectory(strWndDir.GetBuffer(MAX_PATH), MAX_PATH); strWndDir.ReleaseBuffer(); strWndDir += _T("\\winhlp32.exe"); //生成winhlp32.exe中的106#鼠标光标,手形 HMODULE hModule = LoadLibrary(strWndDir); if (hModule) { HCURSOR hHandCursor = ::LoadCursor(hModule, MAKEINTRESOURCE(106)); if (hHandCursor) m_hLinkCursor = CopyCursor(hHandCursor); } FreeLibrary(hModule); } } //获取注册表的键值, 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); } //链接url HINSTANCE CHyperLink::GotoURL(LPCTSTR url, int showcmd) { TCHAR key[MAX_PATH + MAX_PATH]; //首先尝试使用ShellExecute() HINSTANCE result = ShellExecute(NULL, _T("open"), url, NULL,NULL, showcmd); //如果使用失败,则获取.htm注册键值并查找程序 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\"")); //未发现引用%1 if (pos == NULL) { // 则检查 %1 pos = strstr(key, _T("%1")); // 如果还是空 if (pos == NULL) pos = key+lstrlen(key)-1; else //删除参数 *pos = '\0'; } else //删除参数 *pos = '\0'; lstrcat(pos, _T(" ")); lstrcat(pos, url); result = (HINSTANCE) WinExec(key,showcmd); } } } return result; }