protected override bool RunDialog(IntPtr hWndOwner)
        {
            bool result = false;
            if (_rootFolderLocation == IntPtr.Zero)
            {
                PInvoke.Shell32.SHGetSpecialFolderLocation(hWndOwner, (int)this._rootFolder, ref _rootFolderLocation);
                if (_rootFolderLocation == IntPtr.Zero)
                {
                    PInvoke.Shell32.SHGetSpecialFolderLocation(hWndOwner, 0, ref _rootFolderLocation);
                    if (_rootFolderLocation == IntPtr.Zero)
                    {
                        throw new InvalidOperationException("FolderBrowserDialogNoRootFolder");
                    }
                }
            }
            _hwndEdit = IntPtr.Zero;
            //_uiFlags = 0;
            if (_dontIncludeNetworkFoldersBelowDomainLevel)
                _uiFlags += BrowseFlags.BIF_DONTGOBELOWDOMAIN;
            if (this._newStyle)
                _uiFlags += BrowseFlags.BIF_NEWDIALOGSTYLE;
            if (!this._showNewFolderButton)
                _uiFlags += BrowseFlags.BIF_NONEWFOLDERBUTTON;
            if (this._showEditBox)
                _uiFlags += BrowseFlags.BIF_EDITBOX;
            if (this._showBothFilesAndFolders)
                _uiFlags += BrowseFlags.BIF_BROWSEINCLUDEFILES;

            if (Control.CheckForIllegalCrossThreadCalls && (Application.OleRequired() != ApartmentState.STA))
            {
                throw new ThreadStateException("DebuggingException: ThreadMustBeSTA");
            }
            IntPtr pidl = IntPtr.Zero;
            IntPtr hglobal = IntPtr.Zero;
            IntPtr pszPath = IntPtr.Zero;
            try
            {
                PInvoke.BROWSEINFO browseInfo = new PInvoke.BROWSEINFO();
                hglobal = Marshal.AllocHGlobal(MAX_PATH * Marshal.SystemDefaultCharSize);
                pszPath = Marshal.AllocHGlobal(MAX_PATH * Marshal.SystemDefaultCharSize);
                this._callback = new PInvoke.BrowseFolderCallbackProc(this.FolderBrowserCallback);
                browseInfo.pidlRoot = _rootFolderLocation;
                browseInfo.Owner = hWndOwner;
                browseInfo.pszDisplayName = hglobal;
                browseInfo.Title = this._descriptionText;
                browseInfo.Flags = _uiFlags;
                browseInfo.callback = this._callback;
                browseInfo.lParam = IntPtr.Zero;
                browseInfo.iImage = 0;
                pidl = PInvoke.Shell32.SHBrowseForFolder(browseInfo);
                if (((_uiFlags & BrowseFlags.BIF_BROWSEFORPRINTER) == BrowseFlags.BIF_BROWSEFORPRINTER) ||
                ((_uiFlags & BrowseFlags.BIF_BROWSEFORCOMPUTER) == BrowseFlags.BIF_BROWSEFORCOMPUTER))
                {
                    this._selectedPath = Marshal.PtrToStringAuto(browseInfo.pszDisplayName);
                    result = true;
                }
                else
                {
                    if (pidl != IntPtr.Zero)
                    {
                        PInvoke.Shell32.SHGetPathFromIDList(pidl, pszPath);
                        this._selectedPathNeedsCheck = true;
                        this._selectedPath = Marshal.PtrToStringAuto(pszPath);
                        result = true;
                    }
                }
            }
            finally
            {
                PInvoke.IMalloc sHMalloc = GetSHMalloc();
                sHMalloc.Free(_rootFolderLocation);
                _rootFolderLocation = IntPtr.Zero;
                if (pidl != IntPtr.Zero)
                {
                    sHMalloc.Free(pidl);
                }
                if (pszPath != IntPtr.Zero)
                {
                    Marshal.FreeHGlobal(pszPath);
                }
                if (hglobal != IntPtr.Zero)
                {
                    Marshal.FreeHGlobal(hglobal);
                }
                this._callback = null;
            }
            return result;
        }
Beispiel #2
0
 protected override bool RunDialog(IntPtr hWndOwner)
 {
     bool flag = false;
     if (this._rootFolderLocation == IntPtr.Zero)
     {
         PInvoke.Shell32.SHGetSpecialFolderLocation(hWndOwner, (int) this._rootFolder,
                                                    ref this._rootFolderLocation);
         if (this._rootFolderLocation == IntPtr.Zero)
         {
             PInvoke.Shell32.SHGetSpecialFolderLocation(hWndOwner, 0, ref this._rootFolderLocation);
             if (this._rootFolderLocation == IntPtr.Zero)
             {
                 throw new InvalidOperationException("FolderBrowserDialogNoRootFolder");
             }
         }
     }
     this._hwndEdit = IntPtr.Zero;
     if (this._dontIncludeNetworkFoldersBelowDomainLevel)
     {
         this._uiFlags += 2;
     }
     if (this._newStyle)
     {
         this._uiFlags += 0x40;
     }
     if (!this._showNewFolderButton)
     {
         this._uiFlags += 0x200;
     }
     if (this._showEditBox)
     {
         this._uiFlags += 0x10;
     }
     if (this._showBothFilesAndFolders)
     {
         this._uiFlags += 0x4000;
     }
     if (Control.CheckForIllegalCrossThreadCalls && (Application.OleRequired() != ApartmentState.STA))
     {
         throw new ThreadStateException("DebuggingException: ThreadMustBeSTA");
     }
     IntPtr zero = IntPtr.Zero;
     IntPtr hglobal = IntPtr.Zero;
     IntPtr pszPath = IntPtr.Zero;
     try
     {
         PInvoke.BROWSEINFO lpbi = new PInvoke.BROWSEINFO();
         hglobal = Marshal.AllocHGlobal((int) (MAX_PATH*Marshal.SystemDefaultCharSize));
         pszPath = Marshal.AllocHGlobal((int) (MAX_PATH*Marshal.SystemDefaultCharSize));
         this._callback = new PInvoke.BrowseFolderCallbackProc(this.FolderBrowserCallback);
         lpbi.pidlRoot = this._rootFolderLocation;
         lpbi.Owner = hWndOwner;
         lpbi.pszDisplayName = hglobal;
         lpbi.Title = this._descriptionText;
         lpbi.Flags = this._uiFlags;
         lpbi.callback = this._callback;
         lpbi.lParam = IntPtr.Zero;
         lpbi.iImage = 0;
         zero = PInvoke.Shell32.SHBrowseForFolder(lpbi);
         if (((this._uiFlags & 0x2000) == 0x2000) || ((this._uiFlags & 0x1000) == 0x1000))
         {
             this._selectedPath = Marshal.PtrToStringAuto(lpbi.pszDisplayName);
             return true;
         }
         if (zero != IntPtr.Zero)
         {
             PInvoke.Shell32.SHGetPathFromIDList(zero, pszPath);
             this._selectedPathNeedsCheck = true;
             this._selectedPath = Marshal.PtrToStringAuto(pszPath);
             flag = true;
         }
     }
     finally
     {
         PInvoke.IMalloc sHMalloc = GetSHMalloc();
         sHMalloc.Free(this._rootFolderLocation);
         this._rootFolderLocation = IntPtr.Zero;
         if (zero != IntPtr.Zero)
         {
             sHMalloc.Free(zero);
         }
         if (pszPath != IntPtr.Zero)
         {
             Marshal.FreeHGlobal(pszPath);
         }
         if (hglobal != IntPtr.Zero)
         {
             Marshal.FreeHGlobal(hglobal);
         }
         this._callback = null;
     }
     return flag;
 }