VS2012下自定义打开文件对话框

#pragma once#include<objbase.h>#include<commdlg.h>#include"ImagePreviewStatic.h"

//XFileDialog

class XFileDialog : publicCWnd

{

    DECLARE_DYNAMIC(XFileDialog)public:

    XFileDialog(BOOL bOpenFileDialog,//TRUE for FileOpen, FALSE for FileSaveAs
        LPCTSTR lpszDefExt =NULL,

        LPCTSTR lpszFileName=NULL,

        DWORD dwFlags= OFN_HIDEREADONLY |OFN_OVERWRITEPROMPT,

        LPCTSTR lpszFilter= NULL, LPCTSTR lpszInitFolder =NULL,

        CWnd* pParentWnd =NULL);virtual ~XFileDialog();public:void EndDialog(intnResult);virtualBOOL OnInitDialog();virtual longDoModal();virtual    void DoDataExchange(CDataExchange *pDX);virtual BOOL OnNotify(WPARAM wParam, LPARAM lParam, LRESULT*pResult);virtual void ProcFileChange(TCHAR*strFullName);protected:

    OPENFILENAME m_ofn;

    BOOL m_bOpenFileDialog;//TRUE for file open, FALSE for file save
    CString m_strFilter;          //filter string
    TCHAR m_szFileTitle[64];       //contains file title after return
    TCHAR m_szFileName[_MAX_PATH]; //contains full path name after return
CWnd* m_pParentWnd;             //parent/owner window
    HWND m_hWndTop;                 //top level parent window (may be disabled)
CImagePreviewStatic    m_preview;



    DECLARE_MESSAGE_MAP()

};

1 //XFileDialog.cpp : implementation file2 //3 
4 #include "stdafx.h"
5 #include "XFileDialog.h"
6 #include "resource.h"
7 
8 //XFileDialog
9 
10 UINT_PTR CALLBACK OFNHookProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);11 
12 UINT_PTR CALLBACK OFNHookProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)13 {14     if (hWnd ==NULL)15         return 0;16     _AFX_THREAD_STATE* pThreadState =AfxGetThreadState();17     if (pThreadState->m_pAlternateWndInit != NULL && CWnd::FromHandlePermanent(hWnd) ==NULL)18 {19         ASSERT_KINDOF(XFileDialog, pThreadState->m_pAlternateWndInit);20         pThreadState->m_pAlternateWndInit->SubclassWindow(hWnd);21         pThreadState->m_pAlternateWndInit =NULL;22 }23 
24     if (message ==WM_INITDIALOG)25 {26         /*
27 _afxMsgLBSELCHANGE = ::RegisterWindowMessage(LBSELCHSTRING);28 _afxMsgSHAREVI = ::RegisterWindowMessage(SHAREVISTRING);29 _afxMsgFILEOK = ::RegisterWindowMessage(FILEOKSTRING);30 _afxMsgCOLOROK = ::RegisterWindowMessage(COLOROKSTRING);31 _afxMsgHELP = ::RegisterWindowMessage(HELPMSGSTRING);32 _afxMsgSETRGB = ::RegisterWindowMessage(SETRGBSTRING);33         */
34 
35         XFileDialog* pDlg =DYNAMIC_DOWNCAST(XFileDialog, CWnd::FromHandlePermanent(hWnd));36         if (pDlg !=NULL)37             return pDlg->OnInitDialog();38         else
39             return 1;40 }41 
42     return 0;43 }44 
45 BEGIN_MESSAGE_MAP(XFileDialog, CWnd)46 END_MESSAGE_MAP()47 
48 XFileDialog::XFileDialog(BOOL bOpenFileDialog, LPCTSTR lpszDefExt, LPCTSTR lpszFileName,49         DWORD dwFlags, LPCTSTR lpszFilter, LPCTSTR lpszInitFolder, CWnd*pParentWnd) :50 CWnd()51 {52     m_szFileName[0] = '\0';53     m_szFileTitle[0] = '\0';54     m_bOpenFileDialog =bOpenFileDialog;55 
56     m_pParentWnd =NULL;57     m_hWndTop =NULL;58 
59     memset(&m_ofn, 0, sizeof(OPENFILENAME)); //initialize structure to 0/NULL
60 
61     m_ofn.Flags |=  dwFlags | OFN_ENABLETEMPLATE |OFN_HIDEREADONLY | OFN_EXPLORER  |OFN_ENABLEHOOK;62     m_ofn.lpstrTitle   =  _T("图像文件预览对话框");63     m_ofn.lpstrInitialDir =lpszInitFolder;64 
65     m_ofn.lStructSize =  sizeof(OPENFILENAME);66     m_ofn.lpstrFile =m_szFileName;67     m_ofn.nMaxFile =_countof(m_szFileName);68     m_ofn.lpstrDefExt =lpszDefExt;69     m_ofn.lpstrFileTitle =(LPTSTR)m_szFileTitle;70     m_ofn.nMaxFileTitle =_countof(m_szFileTitle);71     if(dwFlags &OFN_ENABLETEMPLATE)72         m_ofn.Flags &= ~OFN_ENABLESIZING;73     m_ofn.hInstance =AfxGetResourceHandle();74     m_ofn.lpfnHook =(LPOFNHOOKPROC)OFNHookProc;75     m_ofn.lpTemplateName =MAKEINTRESOURCE(IDD_IMAGEPREVIEWDLG);76 
77     //setup initial file name
78     if (lpszFileName !=NULL)79 Checked::tcsncpy_s(m_szFileName, _countof(m_szFileName), lpszFileName, _TRUNCATE);80 
81     //Translate filter into commdlg format (lots of \0)
82     if (lpszFilter !=NULL)83 {84         m_strFilter =lpszFilter;85         LPTSTR pch = m_strFilter.GetBuffer(0); //modify the buffer in place86         //MFC delimits with '|' not '\0'
87         while ((pch = _tcschr(pch, '|')) !=NULL)88             *pch++ = '\0';89         m_ofn.lpstrFilter =m_strFilter;90         //do not call ReleaseBuffer() since the string contains '\0' characters
91 }92 }93 
94 XFileDialog::~XFileDialog()95 {96 }97 
98 void XFileDialog::EndDialog(intnResult)99 {100 ASSERT(::IsWindow(m_hWnd));101 
102 ::EndDialog(m_hWnd, nResult);103 }104 
105 BOOL XFileDialog::OnInitDialog()106 {107     //transfer data into the dialog from member variables
108 #if 1
109     if (!UpdateData(FALSE))110 {111         TRACE(traceAppMsg, 0, "Warning: UpdateData failed during dialog init.\n");112         EndDialog(-1);113         returnFALSE;114 }115 #endif
116 
117     GetDlgItem(IDC_IMAGEPREVIEW)->ModifyStyle ( SS_TYPEMASK, SS_OWNERDRAW );118 
119     return TRUE;    //set focus to first one
120 }121 
122 void XFileDialog::DoDataExchange(CDataExchange *pDX)123 {124 CWnd::DoDataExchange(pDX);125 DDX_Control(pDX, IDC_IMAGEPREVIEW, m_preview);126 }127 
128 void XFileDialog::ProcFileChange(TCHAR*strFullName){129     //如果是文件名
130     DWORD nFileAtts =GetFileAttributes(strFullName);131     if ((FILE_ATTRIBUTE_NORMAL == nFileAtts) ||
132         (0 == (nFileAtts & (FILE_ATTRIBUTE_DEVICE |FILE_ATTRIBUTE_DIRECTORY )) ) ){133 m_preview.SetFilename(strFullName);134     } else{135         //m_preview.SetFilename(NULL);
136 }137 }138 
139 
140 BOOL XFileDialog::OnNotify(WPARAM, LPARAM lp, LRESULT *pResult)141 {142     LPOFNOTIFY of =(LPOFNOTIFY) lp;143 CString       csTemp;144 TCHAR       strFileName[_MAX_PATH];145 
146 HWND hParent;147 UINT nfiles;148 
149     switch (of->hdr.code)150 {151     caseCDN_SELCHANGE:152         hParent = GetParent()->GetSafeHwnd();153         nfiles =CommDlg_OpenSave_GetFilePath(hParent, strFileName, _MAX_PATH);154         if (nfiles > 0) {155 ProcFileChange(strFileName);156             //MessageBox(strFileName);
157 }158         break;159 
160     caseCDN_FOLDERCHANGE:161         //Once we    get    this notification our old subclassing of162         //the    SHELL window is    lost, so we    have to163         //subclass it    again. (Changing the folder    causes a164         //destroy    and    recreate of    the    SHELL window).165         //if (m_wndHook.GetSafeHwnd()    != HWND(NULL))166         //m_wndHook.UnsubclassWindow();167 
168         //m_wndHook.SubclassWindow(GetParent()->GetDlgItem(lst2)->GetSafeHwnd());169         //UpdatePreview(_T(""));
170         break;171 }172 
173     *pResult = 0;174     returnFALSE;175 }176 
177 longXFileDialog::DoModal()178 {179     HWND hWndFocus =::GetFocus();180     BOOL bEnableParent =FALSE;181     //allow OLE servers to disable themselves
182     CWinApp* pApp =AfxGetApp();183     if (pApp !=NULL)184         pApp->EnableModeless(FALSE);185 
186     _AFX_THREAD_STATE* pThreadState =AfxGetThreadState();187     pThreadState->m_pAlternateWndInit = this;188     //AfxHookWindowCreate(this);
189 
190     HWND hWndParent = CWnd::GetSafeOwner_(m_pParentWnd->GetSafeHwnd(), &m_hWndTop);;191     if (hWndParent && hWndParent != ::GetDesktopWindow() &&::IsWindowEnabled(hWndParent))192 {193 ::EnableWindow(hWndParent, FALSE);194         bEnableParent =TRUE;195 }196 
197     INT_PTR nResult = 0;198 
199     if(m_bOpenFileDialog)200         nResult = GetOpenFileName(&m_ofn);201     else
202         nResult = GetSaveFileName(&m_ofn);203 
204     if(nResult)205         ASSERT(pThreadState->m_pAlternateWndInit ==NULL);206 
207     //Second part of special case for file open/save dialog.
208     if(bEnableParent)209 ::EnableWindow(hWndParent, TRUE);210     if(::IsWindow(hWndFocus))211 ::SetFocus(hWndFocus);212 
213     AfxUnhookWindowCreate();   //just in case
214     Detach();               //just in case
215 
216     if (pApp !=NULL)217         pApp->EnableModeless(TRUE);218 
219     return nResult ?nResult : IDCANCEL;220 }221 
222 
223 IMPLEMENT_DYNAMIC(XFileDialog, CWnd)224 
225 //XFileDialog message handlers

1 /*
2 *    $Header: $3 *4 *    $History: $5  */
6 #pragma once
7 
8 #include <atlimage.h>
9 
10 //CImagePrieviewStatic
11 class CImagePreviewStatic :    publicCStatic12 {13 DECLARE_DYNAMIC(CImagePreviewStatic)14 public:15 CImagePreviewStatic();16     virtual            ~CImagePreviewStatic();17 
18     virtualBOOL    Create();19     virtual    voidDrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);20 
21     voidSetFilename(LPCTSTR    szFilename);22 
23 protected:24 WCHAR            m_wsFilename[_MAX_PATH];25     Image            *m_img;26     Graphics        *m_graphics;27     CImage          *m_img2;28 
29 DECLARE_MESSAGE_MAP()30 };

1 /*
2 *    $Header: $3 *4 *    $History: $5  */
6 #include "stdafx.h"
7 #include "ImagePreviewStatic.h"
8 
9 
10 //CImagePrieviewStatic
11 IMPLEMENT_DYNAMIC(CImagePreviewStatic, CStatic)12 
13 CImagePreviewStatic::CImagePreviewStatic() : CStatic()14 {15     m_img = (Image *) NULL;16     m_graphics = (Graphics *) NULL;17     m_img2 = (CImage*) NULL;18 }19 
20 CImagePreviewStatic::~CImagePreviewStatic()21 {22     if(m_img) {23         deletem_img;24 }25     if(m_graphics) {26         deletem_graphics;27 }28     if(m_img2) {29         deletem_img2;30 }31 }32 
33 BOOL CImagePreviewStatic::Create()34 {35     if (GetSafeHwnd() !=HWND(NULL))36 {37         m_img =    newImage(m_wsFilename);38         m_graphics = newGraphics(GetSafeHwnd());39         returnTRUE;40 }41 
42     returnFALSE;43 }44 
45 voidCImagePreviewStatic::SetFilename(LPCTSTR szFilename)46 {47 #ifndef    _UNICODE48 USES_CONVERSION;49 #endif
50 
51 ASSERT(szFilename);52 ASSERT(AfxIsValidString(szFilename));53 
54     TRACE("%s\n", szFilename);55 
56 #ifndef    _UNICODE57 wcscpy(m_wsFilename, A2W(szFilename));58 #else
59 wcscpy(m_wsFilename, szFilename);60 #endif
61 
62     //delete m_img;63     //m_img =    new    Image(m_wsFilename,    FALSE);
64     if(m_img2) {65         deletem_img2;66 }67     m_img2 = newCImage();68     m_img2->Load(szFilename);69 
70 Invalidate();71 }72 
73 void CImagePreviewStatic::DrawItem(LPDRAWITEMSTRUCT    /*lpDrawItemStruct*/)74 {75 Unit  units;76 CRect rect;77 
78     /*
79 if (m_img != NULL)80 {81 GetClientRect(&rect);82 
83 RectF destRect(REAL(rect.left),    REAL(rect.top),    REAL(rect.Width()),    REAL(rect.Height())),84 srcRect;85 m_img->GetBounds(&srcRect, &units);86 m_graphics->DrawImage(m_img, destRect, srcRect.X, srcRect.Y, srcRect.Width,    srcRect.Height,    UnitPixel, NULL);87 }88     */
89     if (m_img2 !=NULL) {90         HWND hWnd = GetParent()->m_hWnd;91         HDC hDc =::GetDC(hWnd);92         GetWindowRect(&rect);93         ::ScreenToClient(hWnd, (LPPOINT)&rect);94         ::ScreenToClient(hWnd, (LPPOINT)(&rect) + 1);95         //获取到HDC
96         m_img2->Draw(hDc,rect);97 }98 }99 
100 BEGIN_MESSAGE_MAP(CImagePreviewStatic, CStatic)101 END_MESSAGE_MAP()102 
103 //CImagePrieviewStatic message handlers

IDD_IMAGEPREVIEWDLG DIALOGEX 0, 0, 365, 177
STYLE DS_SETFONT | DS_3DLOOK | DS_FIXEDSYS | DS_CONTROL | WS_CHILD | WS_CLIPSIBLINGS
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
    CONTROL         "",IDC_IMAGEPREVIEW,"Static",SS_OWNERDRAW,7,7,351,163
END