cfiledialog没定义1st1标识符

cfiledialog没有定义1st1标识符
在CFiledialog中重载OnInitDialog希望获取Listctrl控件来设置其显示方式为大图标。
但是提示说没有定义这个1st1标识符

C/C++ code


BOOL CMyFileSel::OnInitDialog()
{
    CFileDialog::OnInitDialog();
    CWnd* pWnd = GetDlgItem(lst1);
    if(pWnd)
        BOOL flag = pWnd->ModifyStyle(LVS_TYPEMASK, LVS_ICON & LVS_TYPEMASK);
    return TRUE;
}

error C2065: “lst1”: 未声明的标识符

------解决方案--------------------
要把Hook打开

------解决方案--------------------
初始化时：
CFileDialog fd(TRUE);
fd.m_ofn.lpstrTitle="Down Load File";
fd.m_ofn.lpstrInitialDir=strcat(drive,dir);
fd.m_ofn.lpstrFile=strcat(fname,ext);
fd.m_ofn.lpstrFilter="Any file(*.*)\0*.*\0ARC file (*.arc)\0*.arc\0BMP file (*.bmp)\0*.bmp\0DLL file (*.dll)\0*.dll\0";
if (stricmp(ext,".arc")==0) fd.m_ofn.nFilterIndex=2;
else if (stricmp(ext,".bmp")==0) fd.m_ofn.nFilterIndex=3;
else if (stricmp(ext,".dll")==0) fd.m_ofn.nFilterIndex=4;
else fd.m_ofn.nFilterIndex=1;
fd.m_ofn.Flags|=OFN_FILEMUSTEXIST;
fd.m_ofn.Flags|=OFN_ALLOWMULTISELECT;// must
fd.m_ofn.Flags|=OFN_EXPLORER; // default by Afx
// fd.m_ofn.Flags|=OFN_ENABLEHOOK;// default by Afx
fd.m_ofn.lpfnHook=DNHookProc;//="_AfxCommDlgProc" see"dlgcomm.cpp" <>NULL!

hook程序如下：

C/C++ code


///////////////////////////////////////////////////////
// for CFileDialog down load 
// in debug version there is an error : ASSERT(m_p...==NULL)
UINT CALLBACK DNHookProc(HWND hDlg,UINT uMsg,WPARAM wPar,LPARAM lPar)
{ // hdlg is a child 
    HWND hWndParent;
    CWinApp        *pApp=AfxGetApp();
    HICON        hIcon;    
    HWND        hw; // SHELLDll_defView
    HWND        hcw;// SysListView32
    DWORD       dwStyle;
//
    if (hDlg == NULL) return 0;
// from "_AfxCommDlgProc()" of the file "dlgcomm.cpp"
    _AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
    if (pThreadState->m_pAlternateWndInit != NULL)
// not         pThreadState->m_pAlternateWndInit->SubclassWindow(hWnd);
            pThreadState->m_pAlternateWndInit = NULL;
//
    hWndParent=GetParent(hDlg);// needed
   switch (uMsg)
   {
      case WM_INITDIALOG:
        hIcon=pApp->LoadIcon(IDI_ICONDN);
        SendMessage(hWndParent,WM_SETICON,(WPARAM)0,(LPARAM)hIcon);
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 
        DestroyIcon(hIcon);
      break;
      case WM_NOTIFY:
        LPOFNOTIFY lpon=(LPOFNOTIFY)lPar; 
        UINT Notify=lpon->hdr.code;
        if (Notify==CDN_TYPECHANGE ||
            Notify==CDN_SELCHANGE  )
        { // after window shown
            hw=GetDlgItem(hWndParent,0x0461);// SHELLDll_defView
            hcw=GetDlgItem(hw,1);// SysListView32
            dwStyle=GetWindowLong(hcw,GWL_STYLE);
//    change multi-selection of ListView
            if (lpon->lpOFN->nFilterIndex==4) // "dll"
            {
                dwStyle &= ~LVS_SINGLESEL;// Multi
            }
            else
            {
                dwStyle |= LVS_SINGLESEL;// Single
            }
            SetWindowLong(hcw,GWL_STYLE,dwStyle);
        }
        if (Notify==CDN_FOLDERCHANGE)
        {
            HWND hLv=GetDlgItem(hWndParent,0x0461);//lst1 
            if(hLv) SendMessage(hLv,WM_COMMAND,0x7029,0);//ODM_WIEW_ICONS
        }
      break;
   }
   return 0;
}

cfiledialog没定义1st1标识符

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