自定义CFileDialog对话框,在CFileDialog上加控件

// XFileDialog.cpp Version 1.1 // // Author: Hans Dietrich // hdietrich2@hotmail.com // // Description: // XFileDialog implements CXFileDialog that uses the new Windows // 2000 style open/save dialog. // // History // Version 1.1 - 2003 June 25 // - Fixed some focus bugs; added check for directory existence // // Version 1.0 - 2003 June 24 // - Initial public release // // This code is based partially on Paul DiLascia's Aug 2000 MSDN Magazine article // "Windows 2000 File Dialog Revisited" // http://msdn.microsoft.com/msdnmag/issues/0800/c/ // // This software is released into the public domain. You are free to use it // in any way you like. // // This software is provided "as is" with no expressed or implied warranty. // I accept no liability for any damage or loss of business that this software // may cause. // /////////////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include <afxpriv.h> #include "XFileDialog.h" #include "XFileDialogRes.h" #include "io.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif /////////////////////////////////////////////////////////////////////////////// // CXFileDialog IMPLEMENT_DYNAMIC(CXFileDialog, CFileDialog) BEGIN_MESSAGE_MAP(CXFileDialog, CFileDialog) //{{AFX_MSG_MAP(CXFileDialog) ON_WM_SIZE() ON_CBN_SELENDOK(IDC_MRU_COMBO, OnSelendokMruCombo) //}}AFX_MSG_MAP END_MESSAGE_MAP() /////////////////////////////////////////////////////////////////////////////// // ctor CXFileDialog::CXFileDialog(BOOL bOpenFileDialog, LPCTSTR lpszDefExt, LPCTSTR lpszFileName, DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pParentWnd) : CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName, dwFlags, lpszFilter, pParentWnd) { m_dwFlags = dwFlags; m_eOsVersion = XFILEDIALOG_AUTO_DETECT_OS_VERSION; m_strTitle = _T(""); m_nIdFileNameStatic = 1090; m_nIdFileNameCombo = 1148; // or 1152 m_nIdFilesOfTypeStatic = 1089; m_nIdFilesOfTypeCombo = 1136; m_nIdReadOnly = 1040; SetTemplate(0, _T("IDD_XFILEDIALOG")); } /////////////////////////////////////////////////////////////////////////////// // DoDataExchange void CXFileDialog::DoDataExchange(CDataExchange* pDX) { CFileDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CXFileDialog) DDX_Control(pDX, IDC_MRU_COMBO, m_cmbRecentFolders); //}}AFX_DATA_MAP } /////////////////////////////////////////////////////////////////////////////// // DoModal override copied mostly from MFC, with modification to use // m_ofnEx instead of m_ofn. int CXFileDialog::DoModal() { TRACE(_T("in CXFileDialog::DoModal\n")); ASSERT_VALID(this); ASSERT(m_ofn.Flags & OFN_ENABLEHOOK); ASSERT(m_ofn.lpfnHook != NULL); // can still be a user hook // zero out the file buffer for consistent parsing later ASSERT(AfxIsValidAddress(m_ofn.lpstrFile, m_ofn.nMaxFile)); DWORD nOffset = lstrlen(m_ofn.lpstrFile)+1; ASSERT(nOffset <= m_ofn.nMaxFile); memset(m_ofn.lpstrFile+nOffset, 0, (m_ofn.nMaxFile-nOffset)*sizeof(TCHAR)); // WINBUG: This is a special case for the file open/save dialog, // which sometimes pumps while it is coming up but before it has // disabled the main window. HWND hWndFocus = ::GetFocus(); BOOL bEnableParent = FALSE; m_ofn.hwndOwner = PreModal(); AfxUnhookWindowCreate(); if (m_ofn.hwndOwner != NULL && ::IsWindowEnabled(m_ofn.hwndOwner)) { bEnableParent = TRUE; ::EnableWindow(m_ofn.hwndOwner, FALSE); } _AFX_THREAD_STATE* pThreadState = AfxGetThreadState(); ASSERT(pThreadState->m_pAlternateWndInit == NULL); if (m_ofn.Flags & OFN_EXPLORER) pThreadState->m_pAlternateWndInit = this; else AfxHookWindowCreate(this); memset(&m_ofnEx, 0, sizeof(m_ofnEx)); memcpy(&m_ofnEx, &m_ofn, sizeof(m_ofn)); if (IsWin2000()) { m_ofnEx.lStructSize = sizeof(m_ofnEx); } int nResult; if (m_bOpenFileDialog) nResult = ::GetOpenFileName((OPENFILENAME*)&m_ofnEx); else nResult = ::GetSaveFileName((OPENFILENAME*)&m_ofnEx); memcpy(&m_ofn, &m_ofnEx, sizeof(m_ofn)); m_ofn.lStructSize = sizeof(m_ofn); if (nResult) ASSERT(pThreadState->m_pAlternateWndInit == NULL); pThreadState->m_pAlternateWndInit = NULL; // WINBUG: Second part of special case for file open/save dialog. if (bEnableParent) ::EnableWindow(m_ofnEx.hwndOwner, TRUE); if (::IsWindow(hWndFocus)) ::SetFocus(hWndFocus); PostModal(); return nResult ? nResult : IDCANCEL; } /////////////////////////////////////////////////////////////////////////////// // OnNotify - when the open dialog sends a notification, copy m_ofnEx to m_ofn // in case handler function is expecting updated information in the // OPENFILENAME struct. // BOOL CXFileDialog::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) { memcpy(&m_ofn, &m_ofnEx, sizeof(m_ofn)); m_ofn.lStructSize = sizeof(m_ofn); return CFileDialog::OnNotify( wParam, lParam, pResult); } /////////////////////////////////////////////////////////////////////////////// // OnFileNameOK BOOL CXFileDialog::OnFileNameOK() { TRACE(_T("CXFileDialog::OnFileNameOK\n")); // save current folder to history list CString strFolder = GetPath(); m_cmbRecentFolders.AddString(strFolder); m_cmbRecentFolders.SetWindowText(strFolder); m_cmbRecentFolders.SaveHistory(TRUE); return CFileDialog::OnFileNameOK(); } /////////////////////////////////////////////////////////////////////////////// // OnInitDialog BOOL CXFileDialog::OnInitDialog() { TRACE(_T("in CXFileDialog::OnInitDialog\n")); CFileDialog::OnInitDialog(); // load folder history - check if valid folder m_cmbRecentFolders.SetCheckAccess(TRUE); m_cmbRecentFolders.LoadHistory(_T("FolderHistory"), _T("Folder")); CString str; if (m_cmbRecentFolders.GetCount() > 0) { m_cmbRecentFolders.GetLBText(0, str); m_cmbRecentFolders.SetWindowText(str); } // save left margin for combo boxes CWnd *pWndFileNameCombo = GetParent()->GetDlgItem(m_nIdFileNameCombo); if (!pWndFileNameCombo) { // the File Name control ID is either 1148 or 1152, depending on whether // it is used as an edit box (1152) or a combo box (1148). If the OS // version is < 5, it is 1152; if >= 5, it is 1148. It will also be // 1152 if the registry key // HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\comdlg32\NoFileMru // is set to 1. For convenience, we will always refer to this control // as a combobox. m_nIdFileNameCombo = 1152; pWndFileNameCombo = GetParent()->GetDlgItem(m_nIdFileNameCombo); } if (pWndFileNameCombo) { CRect rectFileNameCombo; pWndFileNameCombo->GetWindowRect(&rectFileNameCombo); GetParent()->ScreenToClient(&rectFileNameCombo); if (IsWin2000()) m_nComboLeftMargin = rectFileNameCombo.left; else m_nComboLeftMargin = rectFileNameCombo.left + 8; } else { ASSERT(FALSE); m_nComboLeftMargin = 90; } // set title if specified if (!m_strTitle.IsEmpty()) GetParent()->SetWindowText(m_strTitle); return TRUE; // return TRUE unless you set the focus to a control // EXCEPTION: OCX Property Pages should return FALSE } /////////////////////////////////////////////////////////////////////////////// // OnSize - position and size controls on default and new dialogs void CXFileDialog::OnSize(UINT nType, int cx, int cy) { CFileDialog::OnSize(nType, cx, cy); // original dialog box CWnd *pWndParent = GetParent(); ASSERT(pWndParent); if (!pWndParent) return; // File name combobox CWnd *pWndFileNameCombo = GetParent()->GetDlgItem(m_nIdFileNameCombo); if (!pWndFileNameCombo) return; CRect rectFileNameCombo; pWndFileNameCombo->GetWindowRect(&rectFileNameCombo); GetParent()->ScreenToClient(&rectFileNameCombo); rectFileNam