如何剪贴板中各种格式的转换

        case IDM_PASTEDIB:
                if (OpenClipboard (hWnd)) {
                    if (h = GetClipboardData (CF_DIB)) {
                        /* Delete current DIB and get CF_DIB and
                         * CF_PALETTE format data from the clipboard
                         */
                        hpal = GetClipboardData (CF_PALETTE);                        FreeDib();
                        hdibCurrent = CopyHandle (h);
                        if (hdibCurrent) {
                            bLegitDraw = TRUE;
                            lstrcpy(achFileName,"<Clipboard>");
                            hbiCurrent = hdibCurrent;                            /* If there is a CF_PALETTE object in the
                             * clipboard, this is the palette to assume
                             * the DIB should be realized against, otherwise
                             * create a palette for it.
                             */
                            if (hpal)
                                hpalCurrent = CopyPalette (hpal);
                            else
                                hpalCurrent = CreateDibPalette (hdibCurrent);                            SizeWindow(hWnd);
                        }
                        else {
                            bLegitDraw = FALSE;
                            LoadString(hInst, IDS_NOMEM, lpBuffer, sizeof(lpBuffer));
                            ErrMsg(lpBuffer);
                        }
                    }
                    CloseClipboard();
                }
                break;