在CFileDialog對話框中添加控件

1、在C對話框中添加控件關鍵字：C擴展類，OFNHookProc需求描述：昨天遇到一個用戶需求，在C對話框(SAVE )中加入一個 Check , 一個Edit ,一個Spin控件，dlg.Domodal()=IDOK返回時要同時獲得 Edit控件中的數(shù)據(jù).實現(xiàn)方法：如果只需要控制控件，用方法一即可，但如果需要獲取數(shù)據(jù)，則只能用方法二。我最終用的就是方法二.方法一：首先查找MSDN關于C擴展的實現(xiàn)描述， 上網(wǎng)查到實現(xiàn)預覽圖片式的C的例子。按照其思路從C派生了一個新的類 C.在類中添加以下代碼#defi ne WM_CHECKZOOMIN WM_USER+1856public:BOOL bZooml

2、 n;UINT n Mul; 1100/前置聲明BOOL NEAR CALLBACK Han dleNotify(HWND hDlg, LPOFNOTIFY pofn);UINT_PTR CALLBACK OFNHookProc(HWND hDlg, UINT uMsg, WPARAM wParam,LPARAM lParam);/ CIMPLEMENT_DYNAMIC(C, C)C(BOOL bOpe n, LPCTSTR lpszDefExt, LPCTSTR lpsz,DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pPare ntWnd):C(bOpe

3、 n, lpszDefExt, lps z, dwFlags, lpszFilter, pPare ntWnd)/這個四個常用標識位m_ofn.Flags |= OFN_ENABLETEMPLATE |OFN_HIDEREADONLY|OFN_EXPLORER;OFN_EXPLORER | OFN_ENABLEHOOKm_ofn.lpstrTitle=_T(高級保存對話框);m_ofn.hl nsta nee = AfxGetl nsta nceHa ndle();m_ofn.lpstrFilter = _T(*bmpO*BMPO所有文件 0 *0 );m_ofn .l pTemplateNa

4、me = MAKEINTRESOURCE(IDD_);m_ofn .l pfnHook =(LPOFNHOOKPROC)OFNHookProc;/Hook function for the Comm Dlg/在這里處理我們感興趣的消息，想要哪個，截哪個 ！UINT_PTR CALLBACK OFNHookProc(HWND hDlg, UINT uMsg, WPARAM wParam,LPARAM lParam)switch (uMsg)case WMNITDIALOG:/初始化對話框上的控件if(Se ndDlgltemMessage(hDlg, IDC_CHECK_ZOOMIN, BM_G

5、ETCHECK,0,0)=BST_UNCHECKED):E nableWi ndow(GetDlgltem(hDlg,IDC_EDIT_ZOOMNUM),FALSE);:E nableWi ndow(GetDlgltem(hDlg,IDC_SPIN_ZOOMNUM),FALSE);:SetWi ndowText(GetDlgltem(hDlg, IDC_EDIT_ZOOMNUM),_T(1);/ShowWin dow(butto n,SW_HIDE);break;case WM_DESTROY:/ 消毀對話框LPOPEN lpOFN = (LPOPEN)GetWi ndowL on g(hDl

6、g, DWL_USER);break;case WM_COMMAND:/ 這里處理，IDC_CHECK_ZOOMIN 命令if (HIWORD(wParam) = BN_CLICKED) & (LOWORD(wParam)=IDC_CHECK_ZOOMIN)BOOL bZoomln = TRUE;if(Se ndDlgltemMessage(hDlg, IDC_CHECK_ZOOMIN, BM_GETCHECK, 0, 0)=BST_CHECKED)bZoomIn = TRUE;:E nableWi ndow(GetDlgltem(hDlg,IDC_EDIT_ZOOMNUM),TRUE);:E

7、 nableWi ndow(GetDlgltem(hDlg,IDC_SPIN_ZOOMNUM),TRUE);elsebZoomIn = FALSE;/:SetWi ndowText(GetDlgltem(hDlg, IDC_EDIT_ZOOMNUM),);:E nableWi ndow(GetDlgltem(hDlg,IDC_EDIT_ZOOMNUM),FALSE);:E nableWi ndow(GetDlgltem(hDlg,IDC_SPIN_ZOOMNUM),FALSE);HWND hParent = GetParent(hDlg);/注意hDlg是新加的模板對話框句柄，它是C對話框的子

8、部分，要獲取 C對話框的句柄需要用GetParent 函數(shù)PostMessage(hPare nt,WM_CHECKZOOMIN,(WPARAM)bZooml n,(LPARAM)0);bZoomln = FALSE;break;case WM_NOTIFY:Han dleNotify(hDlg, (LPOFNOTIFY)lParam);break;return 0;/這里處理notify 消息BOOL NEAR CALLBACK Han dleNotify(HWND hDIg, LPOFNOTIFY pofn)C dlg(TRUE);switch (pof n-hdr.code)case C

9、DN_SELCHANGE:/char sz;/ Get the path of the selected file./if (CommDlg_Ope nSave_Get(GetPare nt(hDlg), szFile, sizeof(szFile) SetWi ndowText(buff);();6結(jié)果測試。C dlg(TRUE);dlg.DoModal();通過指定資源ID ,可以使用Wizard添加處理消息，OK這正是我想要的，按照它的方法，很快就實現(xiàn)了需求，調(diào)用如下.h/ Dialog DataAFX_DATA(C)en um IDD = IDD_ ;AFX_DATApublic:BO

10、OL bZooml n;UINT n Mui; 1100afx_msg void OnBn ClickedCheckZoomi n();afx_msg void On DeltaposSpi nZoom num(NMHDR *pNMHDR, LRESULT *pResult);virtual BOOL Onlni tDialog();afx_msg void OnEn Cha ngeEditZoo mn um();afx_msg void OnEn KillfocusEditZoo mn um();.cppC(BOOL bOpe n, LPCTSTR lpszDefExt, LPCTSTR l

11、psz,DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pPare ntWnd):C(bOpe n, lpszDefExt, lps z, dwFlags, lpszFilter, pPare ntWnd)/這個四個常用標識位m_ofn.Flags |= OFN_ENABLETEMPLATE |OFN_HIDEREADONLY|OFN_EXPLORER;OFN_EXPLORER | OFN_ENABLEHOOKm_ofn.lpstrTitle=_T(高級保存對話框);m_ofn.hI nsta nee = AfxGetI nsta nceHa ndle();m

12、_ofn.lpstrFilter = _T(*bmp0*BMP0所有文件 0 *.*0 );SetTemplate(0, IDD；BEGIN_MESSAGE_MAP(C, C)ON_COMMAND()ON_BN_CLICKED(IDC_CHECK_ZOOMIN, &C)ON_NOTIFY(UDN_DELTAPOS, IDC_SPIN_ZOOMNUM, &C)ON_EN_CHANGE(IDC_EDIT_ZOOMNUM, &C)ON_EN_KILLFOCUS(IDC_EDIT_ZOOMNUM, &C)END_MESSAGE_MAP()void C()/ TODO:在此添加控件通知處理程序代碼bZo

13、omln = !bZooml n;GetDlgltem(IDC_EDIT_ZOOMNUM)-E nableWi ndow(bZooml n);GetDlgltem(IDC_SPIN_ZOOMNUM)-E nableWi ndow(bZooml n);void C(NMHDR *pNMHDR, LRESULT *pResult)LPNMUPDOWN pNMUpDow n = re in terpret_cast(pNMHDR);/ TODO:在此添加控件通知處理程序代碼if (pNMUpDow n-iDelta 0)if (n Mul 1)n Mul-;elseif (n Mul SetWi n

14、dowText (I pstr); *pResult = 0;BOOL C()C();/ TODO:在此添加額外的初始化GetDlgItem(IDC_EDIT_ZOOMNUM)-E nableWi ndow(FALSE);GetDlgItem(IDC_SPIN_ZOOMNUM)-E nableWi ndow(FALSE);GetDlgItem(IDC_EDIT_ZOOMNUM)-SetWi ndowText(_T(1);bZoomIn = FALSE;n Mul = 1;return TRUE; / return TRUE unl ess you set the focus to a cont

15、rol/異常:OCX 屬性頁應返回FALSE void C()/ TODO:如果該控件是 RICHEDIT 控件，它將不/發(fā)送此通知，除非重寫C()/ 函數(shù)并調(diào)用 CRichEditCtrl().SetEve ntMask()，/同時將ENM_CHANGE 標志 或”運算到掩碼中。/ TODO:在此添加控件通知處理程序代碼CString strText;GetDlgItem(IDC_EDIT_ZOOMNUM)-GetWi ndowText(strText);nMul = _wtoi(strText);if ( (n Mul 100)if (n Mul 100) nMul = 100;wchar_t buff10;_itow( nMul, buff, 10 );LPCTSTR Ipstr = (LPCTSTR)buff;GetDlgltem(IDC_EDIT_ZOOMNUM)-SetWi ndowText(lpstr);void C()/ TODO:在此添加控件通知處理程序代碼CString strText;GetDlgItem(IDC_EDIT_ZOOMNUM)-GetWi ndowText(strText);nMul = _wtoi(strText)