Here is a list of avaiable Message for the BMessageFilter
| B_SET_PROPERTY | 'PSET' | |
| B_GET_PROPERTY | 'PGET' | |
| B_CREATE_PROPERTY | 'PCRT' | |
| B_DELETE_PROPERTY | 'PDEL' | |
| B_COUNT_PROPERTIES | 'PCNT' | |
| B_EXECUTE_PROPERTY | 'PEXE' | |
| B_GET_SUPPORTED_SUITES | 'SUIT' | |
| B_UNDO | 'UNDO' | |
| B_REDO | 'REDO' | |
| B_CUT | 'CCUT' | |
| B_COPY | 'COPY' | |
| B_PASTE | 'PSTE' | |
| B_SELECT_ALL | 'SALL' | |
| B_SAVE_REQUESTED | 'SAVE' | |
| B_MESSAGE_NOT_UNDERSTOOD | 'MNOT' | |
| B_NO_REPLY | 'NONE' | |
| B_REPLY | 'RPLY' | |
| B_SIMPLE_DATA | 'DATA' | |
| B_MIME_DATA | 'MIME' | |
| B_ARCHIVED_OBJECT | 'ARCV' | |
| B_UPDATE_STATUS_BAR | 'SBUP' | |
| B_RESET_STATUS_BAR | 'SBRS' | |
| B_NODE_MONITOR | 'NDMN' | |
| B_QUERY_UPDATE | 'QUPD' | |
| B_ENDORSABLE | 'ENDO' | |
| B_COPY_TARGET | 'DDCP' | |
| B_MOVE_TARGET | 'DDMV' | |
| B_TRASH_TARGET | 'DDRM' | |
| B_LINK_TARGET | 'DDLN' | |
| B_INPUT_DEVICES_CHANGED | 'IDCH' | |
| B_INPUT_METHOD_EVENT | 'IMEV' | |
| B_WINDOW_MOVE_TO | 'WDMT' | |
| B_WINDOW_MOVE_BY | 'WDMB' | |
| B_SILENT_RELAUNCH | 'AREL' | |
| B_OBSERVER_NOTICE_CHANGE | 'NTCH' | |
| B_CONTROL_INVOKED | 'CIVK' | |
| B_CONTROL_MODIFIED | 'CMOD' | |
| B_ABOUT_REQUESTED | '_ABR' | |
| B_WINDOW_ACTIVATED | '_ACT' | |
| B_APP_ACTIVATED | '_ACT' // | Same as B_WINDOW_ACTIVATED |
| B_ARGV_RECEIVED | '_ARG' | |
| B_QUIT_REQUESTED | '_QRQ' | |
| B_CLOSE_REQUESTED | '_QRQ' // | Obsolete; use B_QUIT_REQUESTED |
| B_CANCEL | '_CNC' | |
| B_INVALIDATE | '_IVL' | |
| B_KEY_DOWN | '_KYD' | |
| B_KEY_UP | '_KYU' | |
| B_UNMAPPED_KEY_DOWN | '_UKD' | |
| B_UNMAPPED_KEY_UP | '_UKU' | |
| B_KEY_MAP_LOADED | '_KML' | |
| B_LAYOUT_WINDOW | '_LAY' | |
| B_MODIFIERS_CHANGED | '_MCH' | |
| B_MINIMIZE | '_WMN' | |
| B_MOUSE_DOWN | '_MDN' | |
| B_MOUSE_MOVED | '_MMV' | |
| B_MOUSE_ENTER_EXIT | '_MEX' | |
| B_MOUSE_IDLE | '_MSI' | |
| B_MOUSE_UP | '_MUP' | |
| B_MOUSE_WHEEL_CHANGED | '_MWC' | |
| B_OPEN_IN_WORKSPACE | '_OWS' | |
| B_PACKAGE_UPDATE | '_PKU' | |
| B_PRINTER_CHANGED | '_PCH' | |
| B_PULSE | '_PUL' | |
| B_READY_TO_RUN | '_RTR' | |
| B_REFS_RECEIVED | '_RRC' | |
| B_RELEASE_OVERLAY_LOCK | '_ROV' | |
| B_ACQUIRE_OVERLAY_LOCK | '_AOV' | |
| B_SCREEN_CHANGED | '_SCH' | |
| B_VALUE_CHANGED | '_VCH' | |
| B_TRANSLATOR_ADDED | '_ART' | |
| B_TRANSLATOR_REMOVED | '_RRT' | |
| B_DELETE_TRANSLATOR | '_DRT' | |
| B_VIEW_MOVED | '_VMV' | |
| B_VIEW_RESIZED | '_VRS' | |
| B_WINDOW_MOVED | '_WMV' | |
| B_WINDOW_RESIZED | '_WRS' | |
| B_WORKSPACES_CHANGED | '_WCG' | |
| B_WORKSPACE_ACTIVATED | '_WAC' | |
| B_ZOOM | '_WZM' | |
| B_COLORS_UPDATED | '_CLU' | |
| B_FONTS_UPDATED | '_FNU' | |
| B_TRACKER_ADDON_MESSAGE | '_TAM' | |
| _APP_MENU_ | '_AMN' | |
| _BROWSER_MENUS_ | '_BRM' | |
| _MENU_EVENT_ | '_MEV' | |
| _PING_ | '_PBL' | |
| _QUIT_ | '_QIT' | |
| _VOLUME_MOUNTED_ | '_NVL' | |
| _VOLUME_UNMOUNTED_ | '_VRM' | |
| _MESSAGE_DROPPED_ | '_MDP' | |
| _DISPOSE_DRAG_ | '_DPD' | |
| _MENUS_DONE_ | '_MND' | |
| _SHOW_DRAG_HANDLES_ | '_SDH' | |
| _EVENTS_PENDING_ | '_EVP' | |
| _UPDATE_ | '_UPD' | |
| _UPDATE_IF_NEEDED_ | '_UPN' | |
| _PRINTER_INFO_ | '_PIN' | |
| _SETUP_PRINTER_ | '_SUP' | |
| _SELECT_PRINTER_ | '_PSL' |