在CFileDialog对话框中添加控件

1、在C对话框中添加控件关键字：C扩展类，OFNHookProc需求描述：昨天遇到一个用户需求，在C对话框(SAVE )中加入一个 Check , 一个Edit ,一个Spin控件，dlg.Domodal()=IDOK返回时要同时获得 Edit控件中的数据.实现方法：如果只需要控制控件，用方法一即可，但如果需要获取数据，则只能用方法二。我最终用的就是方法二.方法一：首先查找MSDN关于C扩展的实现描述， 上网查到实现预览图片式的C的例子。按照其思路从C派生了一个新的类 C.在类中添加以下代码#defi ne WM_CHECKZOOMIN WM_USER+1856public:BOOL bZooml

2、 n;UINT n Mul; 1100/前置声明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)/这个四个常用标识位m_ofn.Flags |= OFN_ENABLETEMPLATE |OFN_HIDEREADONLY|OFN_EXPLORER;OFN_EXPLORER | OFN_ENABLEHOOKm_ofn.lpstrTitle=_T(高级保存对话框);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/在这里处理我们感兴趣的消息，想要哪个，截哪个 ！UINT_PTR CALLBACK OFNHookProc(HWND hDlg, UINT uMsg, WPARAM wParam,LPARAM lParam)switch (uMsg)case WMNITDIALOG:/初始化对话框上的控件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:/ 消毁对话框LPOPEN lpOFN = (LPOPEN)GetWi ndowL on g(hDl

6、g, DWL_USER);break;case WM_COMMAND:/ 这里处理，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是新加的模板对话框句柄，它是C对话框的子

8、部分，要获取 C对话框的句柄需要用GetParent 函数PostMessage(hPare nt,WM_CHECKZOOMIN,(WPARAM)bZooml n,(LPARAM)0);bZoomln = FALSE;break;case WM_NOTIFY:Han dleNotify(hDlg, (LPOFNOTIFY)lParam);break;return 0;/这里处理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结果测试。C dlg(TRUE);dlg.DoModal();通过指定资源ID ,可以使用Wizard添加处理消息，OK这正是我想要的，按照它的方法，很快就实现了需求，调用如下.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)/这个四个常用标识位m_ofn.Flags |= OFN_ENABLETEMPLATE |OFN_HIDEREADONLY|OFN_EXPLORER;OFN_EXPLORER | OFN_ENABLEHOOKm_ofn.lpstrTitle=_T(高级保存对话框);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:在此添加控件通知处理程序代码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:在此添加控件通知处理程序代码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:在此添加额外的初始化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/异常:OCX 属性页应返回FALSE void C()/ TODO:如果该控件是 RICHEDIT 控件，它将不/发送此通知，除非重写C()/ 函数并调用 CRichEditCtrl().SetEve ntMask()，/同时将ENM_CHANGE 标志 或”运算到掩码中。/ TODO:在此添加控件通知处理程序代码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:在此添加控件通知处理程序代码CString strText;GetDlgItem(IDC_EDIT_ZOOMNUM)-GetWi ndowText(strText);nMul = _wtoi(strText)