filedlg.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

  }
  fodInfos.filter = filter;

  /* convert lpstrCustomFilter */
  if (ofn->lpstrCustomFilter)
  {
    LPCSTR s;
    int n, len;

    /* customfilter contains a pair of strings...  title\0ext\0 */
    s = ofn->lpstrCustomFilter;
    if (*s) s = s+strlen(s)+1;
    if (*s) s = s+strlen(s)+1;
    n = s - ofn->lpstrCustomFilter;
    len = MultiByteToWideChar( CP_ACP, 0, ofn->lpstrCustomFilter, n, NULL, 0 );
    customfilter = MemAlloc(len*sizeof(WCHAR));
    MultiByteToWideChar( CP_ACP, 0, ofn->lpstrCustomFilter, n, customfilter, len );
  }
  fodInfos.customfilter = customfilter;

  /* Initialize the dialog property */
  fodInfos.DlgInfos.dwDlgProp = 0;
  fodInfos.DlgInfos.hwndCustomDlg = NULL;

  switch(iDlgType)
  {
    case OPEN_DIALOG :
      ret = GetFileName95(&fodInfos);
      break;
    case SAVE_DIALOG :
      fodInfos.DlgInfos.dwDlgProp |= FODPROP_SAVEDLG;
      ret = GetFileName95(&fodInfos);
      break;
    default :
      ret = 0;
  }

  if (lpstrSavDir)
  {
      SetCurrentDirectoryA(lpstrSavDir);
      MemFree(lpstrSavDir);
  }

  MemFree(title);
  MemFree(defext);
  MemFree(filter);
  MemFree(customfilter);
  MemFree(fodInfos.initdir);
  MemFree(fodInfos.filename);

  TRACE("selected file: %s\n",ofn->lpstrFile);

  return ret;
}

/***********************************************************************
 *      GetFileDialog95W
 *
 * Copy the OPENFILENAMEW structure in a FileOpenDlgInfos structure.
 * Call GetFileName95 with this structure and clean the memory.
 *
 */
BOOL  WINAPI GetFileDialog95W(LPOPENFILENAMEW ofn,UINT iDlgType)
{
  BOOL ret;
  FileOpenDlgInfos fodInfos;
  LPWSTR lpstrSavDir = NULL;

  /* Initialize CommDlgExtendedError() */
  COMDLG32_SetCommDlgExtendedError(0);

  /* Initialize FileOpenDlgInfos structure */
  ZeroMemory(&fodInfos, sizeof(FileOpenDlgInfos));

  /*  Pass in the original ofn */
  fodInfos.ofnInfos = ofn;

  fodInfos.title = ofn->lpstrTitle;
  fodInfos.defext = ofn->lpstrDefExt;
  fodInfos.filter = ofn->lpstrFilter;
  fodInfos.customfilter = ofn->lpstrCustomFilter;

  /* convert string arguments, save others */
  if(ofn->lpstrFile)
  {
    fodInfos.filename = MemAlloc(ofn->nMaxFile*sizeof(WCHAR));
    lstrcpynW(fodInfos.filename,ofn->lpstrFile,ofn->nMaxFile);
  }
  else
    fodInfos.filename = NULL;

  if(ofn->lpstrInitialDir)
  {
    /* fodInfos.initdir = strdupW(ofn->lpstrInitialDir); */
    DWORD len = lstrlenW(ofn->lpstrInitialDir)+1;
    fodInfos.initdir = MemAlloc(len*sizeof(WCHAR));
    memcpy(fodInfos.initdir,ofn->lpstrInitialDir,len*sizeof(WCHAR));
  }
  else
    fodInfos.initdir = NULL;

  /* save current directory */
  if (ofn->Flags & OFN_NOCHANGEDIR)
  {
     lpstrSavDir = MemAlloc(MAX_PATH*sizeof(WCHAR));
     GetCurrentDirectoryW(MAX_PATH, lpstrSavDir);
  }

  fodInfos.unicode = TRUE;

  switch(iDlgType)
  {
  case OPEN_DIALOG :
      ret = GetFileName95(&fodInfos);
      break;
  case SAVE_DIALOG :
      fodInfos.DlgInfos.dwDlgProp |= FODPROP_SAVEDLG;
      ret = GetFileName95(&fodInfos);
      break;
  default :
      ret = 0;
  }

  if (lpstrSavDir)
  {
      SetCurrentDirectoryW(lpstrSavDir);
      MemFree(lpstrSavDir);
  }

  /* restore saved IN arguments and convert OUT arguments back */
  MemFree(fodInfos.filename);
  MemFree(fodInfos.initdir);
  return ret;
}

/******************************************************************************
 * COMDLG32_GetDisplayNameOf [internal]
 *
 * Helper function to get the display name for a pidl.
 */
static BOOL COMDLG32_GetDisplayNameOf(LPCITEMIDLIST pidl, LPWSTR pwszPath) {
    LPSHELLFOLDER psfDesktop;
    STRRET strret;
        
    if (FAILED(SHGetDesktopFolder(&psfDesktop)))
        return FALSE;

    if (FAILED(IShellFolder_GetDisplayNameOf(psfDesktop, pidl, SHGDN_FORPARSING, &strret))) {
        IShellFolder_Release(psfDesktop);
        return FALSE;
    }

    IShellFolder_Release(psfDesktop);
    return SUCCEEDED(StrRetToBufW(&strret, pidl, pwszPath, MAX_PATH));
}

/***********************************************************************
 *      ArrangeCtrlPositions [internal]
 *
 * NOTE: Do not change anything here without a lot of testing.
 */
static void ArrangeCtrlPositions(HWND hwndChildDlg, HWND hwndParentDlg, BOOL hide_help)
{
    HWND hwndChild, hwndStc32;
    RECT rectParent, rectChild, rectStc32;
    INT help_fixup = 0, child_height_fixup = 0, child_width_fixup = 0;

    /* Take into account if open as read only checkbox and help button
     * are hidden
     */
     if (hide_help)
     {
         RECT rectHelp, rectCancel;
         GetWindowRect(GetDlgItem(hwndParentDlg, pshHelp), &rectHelp);
         GetWindowRect(GetDlgItem(hwndParentDlg, IDCANCEL), &rectCancel);
         /* subtract the height of the help button plus the space between
          * the help button and the cancel button to the height of the dialog
          */
          help_fixup = rectHelp.bottom - rectCancel.bottom;
    }

    /*
      There are two possibilities to add components to the default file dialog box.

      By default, all the new components are added below the standard dialog box (the else case).

      However, if there is a static text component with the stc32 id, a special case happens.
      The x and y coordinates of stc32 indicate the top left corner where to place the standard file dialog box
      in the window and the cx and cy indicate how to size the window.
      Moreover, if the new component's coordinates are on the left of the stc32 , it is placed on the left 
      of the standard file dialog box. If they are above the stc32 component, it is placed above and so on....
      
     */

    GetClientRect(hwndParentDlg, &rectParent);

    /* when arranging controls we have to use fixed parent size */
    rectParent.bottom -= help_fixup;

    hwndStc32 = GetDlgItem(hwndChildDlg, stc32);
    if (hwndStc32)
    {
        GetWindowRect(hwndStc32, &rectStc32);
        MapWindowPoints(0, hwndChildDlg, (LPPOINT)&rectStc32, 2);

        /* set the size of the stc32 control according to the size of
         * client area of the parent dialog
         */
        SetWindowPos(hwndStc32, 0,
                     0, 0,
                     rectParent.right, rectParent.bottom,
                     SWP_NOMOVE | SWP_NOZORDER);
    }
    else
        SetRectEmpty(&rectStc32);

    /* this part moves controls of the child dialog */
    hwndChild = GetWindow(hwndChildDlg, GW_CHILD);
    while (hwndChild)
    {
        if (hwndChild != hwndStc32)
        {
            GetWindowRect(hwndChild, &rectChild);
            MapWindowPoints(0, hwndChildDlg, (LPPOINT)&rectChild, 2);

            /* move only if stc32 exist */
            if (hwndStc32 && rectChild.left > rectStc32.right)
            {
                LONG old_left = rectChild.left;

                /* move to the right of visible controls of the parent dialog */
                rectChild.left += rectParent.right;
                rectChild.left -= rectStc32.right;

                child_width_fixup = rectChild.left - old_left;
            }
            /* move even if stc32 doesn't exist */
            if (rectChild.top >= rectStc32.bottom)
            {
                LONG old_top = rectChild.top;

                /* move below visible controls of the parent dialog */
                rectChild.top += rectParent.bottom;
                rectChild.top -= rectStc32.bottom - rectStc32.top;

                child_height_fixup = rectChild.top - old_top;
            }

            SetWindowPos(hwndChild, 0, rectChild.left, rectChild.top,
                         0, 0, SWP_NOSIZE | SWP_NOZORDER);
        }
        hwndChild = GetWindow(hwndChild, GW_HWNDNEXT);
    }

    /* this part moves controls of the parent dialog */
    hwndChild = GetWindow(hwndParentDlg, GW_CHILD);
    while (hwndChild)
    {
        if (hwndChild != hwndChildDlg)
        {
            GetWindowRect(hwndChild, &rectChild);
            MapWindowPoints(0, hwndParentDlg, (LPPOINT)&rectChild, 2);

            /* left,top of stc32 marks the position of controls
             * from the parent dialog
             */
            rectChild.left += rectStc32.left;
            rectChild.top += rectStc32.top;

            SetWindowPos(hwndChild, 0, rectChild.left, rectChild.top,
                         0, 0, SWP_NOSIZE | SWP_NOZORDER);
        }
        hwndChild = GetWindow(hwndChild, GW_HWNDNEXT);
    }

    /* calculate the size of the resulting dialog */

    /* here we have to use original parent size */
    GetClientRect(hwndParentDlg, &rectParent);
    GetClientRect(hwndChildDlg, &rectChild);

    if (hwndStc32)
    {
        rectChild.right += child_width_fixup;
        rectChild.bottom += child_height_fixup;

        if (rectParent.right > rectChild.right)
        {
            rectParent.right += rectChild.right;
            rectParent.right -= rectStc32.right - rectStc32.left;
        }
        else
        {
            rectParent.right = rectChild.right;
        }

        if (rectParent.bottom > rectChild.bottom)
        {
            rectParent.bottom += rectChild.bottom;
            rectParent.bottom -= rectStc32.bottom - rectStc32.top;
        }
        else
        {
            /* child dialog is higher, unconditionally set new dialog
             * height to its size (help_fixup will be subtracted below)
             */
            rectParent.bottom = rectChild.bottom + help_fixup;
        }
    }
    else
    {
        rectParent.bottom += rectChild.bottom;
    }

    /* finally use fixed parent size */
    rectParent.bottom -= help_fixup;

    /* set the size of the parent dialog */
    AdjustWindowRectEx(&rectParent, GetWindowLongW(hwndParentDlg, GWL_STYLE),
                       FALSE, GetWindowLongW(hwndParentDlg, GWL_EXSTYLE));
    SetWindowPos(hwndParentDlg, 0,
                 0, 0,
                 rectParent.right - rectParent.left,
                 rectParent.bottom - rectParent.top,
                 SWP_NOMOVE | SWP_NOZORDER);
}

static INT_PTR CALLBACK FileOpenDlgProcUserTemplate(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch(uMsg) {
    case WM_INITDIALOG:
        return TRUE;
    }
    return FALSE;
}

static HWND CreateTemplateDialog(FileOpenDlgInfos *fodInfos, HWND hwnd)
{
    LPCVOID template;
    HRSRC hRes;
    HANDLE hDlgTmpl = 0;
    HWND hChildDlg = 0;

    TRACE("\n");

    /*
     * If OFN_ENABLETEMPLATEHANDLE is specified, the OPENFILENAME
     * structure's hInstance parameter is not a HINSTANCE, but
     * instead a pointer to a template resource to use.
     */
    if (fodInfos->ofnInfos->Flags & (OFN_ENABLETEMPLATE | OFN_ENABLETEMPLATEHANDLE))
    {
      HINSTANCE hinst;
      if (fodInfos->ofnInfos->Flags  & OFN_ENABLETEMPLATEHANDLE)
      {
        hinst = COMDLG32_hInstance;
        if( !(template = LockResource( fodInfos->ofnInfos->hInstance)))
        {
          COMDLG32_SetCommDlgExtendedError(CDERR_LOADRESFAILURE);
          return NULL;
        }
      }
      else
      {
        hinst = fodInfos->ofnInfos->hInstance;
        if(fodInfos->unicode)
        {
            LPOPENFILENAMEW ofn = fodInfos->ofnInfos;
            hRes = FindResourceW( hinst, ofn->lpTemplateName, (LPWSTR)RT_DIALOG);
        }
        else
        {
            LPOPENFILENAMEA ofn = (LPOPENFILENAMEA)fodInfos->ofnInfos;
            hRes = FindResourceA( hinst, ofn->lpTemplateName, (LPSTR)RT_DIALOG);
        }
        if (!hRes)
        {
          COMDLG32_SetCommDlgExtendedError(CDERR_FINDRESFAILURE);
          return NULL;
        }
        if (!(hDlgTmpl = LoadResource( hinst, hRes )) ||
            !(template = LockResource( hDlgTmpl )))
        {
          COMDLG32_SetCommDlgExtendedError(CDERR_LOADRESFAILURE);
          return NULL;
    	}
      }
      if (fodInfos->unicode)
          hChildDlg = CreateDialogIndirectParamW(hinst, template, hwnd,
              IsHooked(fodInfos) ? (DLGPROC)fodInfos->ofnInfos->lpfnHook : FileOpenDlgProcUserTemplate,