//go:build windows /* * Copyright (C) 2019 Tad Vizbaras. All Rights Reserved. * Copyright (C) 2010-2012 The W32 Authors. All Rights Reserved. */ package w32 import ( "errors" "fmt" "golang.org/x/sys/windows" "syscall" "unsafe" ) type CSIDL uint32 const ( CSIDL_DESKTOP = 0x00 CSIDL_INTERNET = 0x01 CSIDL_PROGRAMS = 0x02 CSIDL_CONTROLS = 0x03 CSIDL_PRINTERS = 0x04 CSIDL_PERSONAL = 0x05 CSIDL_FAVORITES = 0x06 CSIDL_STARTUP = 0x07 CSIDL_RECENT = 0x08 CSIDL_SENDTO = 0x09 CSIDL_BITBUCKET = 0x0A CSIDL_STARTMENU = 0x0B CSIDL_MYDOCUMENTS = 0x0C CSIDL_MYMUSIC = 0x0D CSIDL_MYVIDEO = 0x0E CSIDL_DESKTOPDIRECTORY = 0x10 CSIDL_DRIVES = 0x11 CSIDL_NETWORK = 0x12 CSIDL_NETHOOD = 0x13 CSIDL_FONTS = 0x14 CSIDL_TEMPLATES = 0x15 CSIDL_COMMON_STARTMENU = 0x16 CSIDL_COMMON_PROGRAMS = 0x17 CSIDL_COMMON_STARTUP = 0x18 CSIDL_COMMON_DESKTOPDIRECTORY = 0x19 CSIDL_APPDATA = 0x1A CSIDL_PRINTHOOD = 0x1B CSIDL_LOCAL_APPDATA = 0x1C CSIDL_ALTSTARTUP = 0x1D CSIDL_COMMON_ALTSTARTUP = 0x1E CSIDL_COMMON_FAVORITES = 0x1F CSIDL_INTERNET_CACHE = 0x20 CSIDL_COOKIES = 0x21 CSIDL_HISTORY = 0x22 CSIDL_COMMON_APPDATA = 0x23 CSIDL_WINDOWS = 0x24 CSIDL_SYSTEM = 0x25 CSIDL_PROGRAM_FILES = 0x26 CSIDL_MYPICTURES = 0x27 CSIDL_PROFILE = 0x28 CSIDL_SYSTEMX86 = 0x29 CSIDL_PROGRAM_FILESX86 = 0x2A CSIDL_PROGRAM_FILES_COMMON = 0x2B CSIDL_PROGRAM_FILES_COMMONX86 = 0x2C CSIDL_COMMON_TEMPLATES = 0x2D CSIDL_COMMON_DOCUMENTS = 0x2E CSIDL_COMMON_ADMINTOOLS = 0x2F CSIDL_ADMINTOOLS = 0x30 CSIDL_CONNECTIONS = 0x31 CSIDL_COMMON_MUSIC = 0x35 CSIDL_COMMON_PICTURES = 0x36 CSIDL_COMMON_VIDEO = 0x37 CSIDL_RESOURCES = 0x38 CSIDL_RESOURCES_LOCALIZED = 0x39 CSIDL_COMMON_OEM_LINKS = 0x3A CSIDL_CDBURN_AREA = 0x3B CSIDL_COMPUTERSNEARME = 0x3D CSIDL_FLAG_CREATE = 0x8000 CSIDL_FLAG_DONT_VERIFY = 0x4000 CSIDL_FLAG_NO_ALIAS = 0x1000 CSIDL_FLAG_PER_USER_INIT = 0x8000 CSIDL_FLAG_MASK = 0xFF00 NOTIFYICON_VERSION = 4 ) var ( FOLDERID_AccountPictures = NewGUID("{008CA0B1-55B4-4C56-B8A8-4DE4B299D3BE}") FOLDERID_AddNewPrograms = NewGUID("{DE61D971-5EBC-4F02-A3A9-6C82895E5C04}") FOLDERID_AdminTools = NewGUID("{724EF170-A42D-4FEF-9F26-B60E846FBA4F}") FOLDERID_ApplicationShortcuts = NewGUID("{A3918781-E5F2-4890-B3D9-A7E54332328C}") FOLDERID_AppsFolder = NewGUID("{1E87508D-89C2-42F0-8A7E-645A0F50CA58}") FOLDERID_AppUpdates = NewGUID("{A305CE99-F527-492B-8B1A-7E76FA98D6E4}") FOLDERID_CDBurning = NewGUID("{9E52AB10-F80D-49DF-ACB8-4330F5687855}") FOLDERID_ChangeRemovePrograms = NewGUID("{DF7266AC-9274-4867-8D55-3BD661DE872D}") FOLDERID_CommonAdminTools = NewGUID("{D0384E7D-BAC3-4797-8F14-CBA229B392B5}") FOLDERID_CommonOEMLinks = NewGUID("{C1BAE2D0-10DF-4334-BEDD-7AA20B227A9D}") FOLDERID_CommonPrograms = NewGUID("{0139D44E-6AFE-49F2-8690-3DAFCAE6FFB8}") FOLDERID_CommonStartMenu = NewGUID("{A4115719-D62E-491D-AA7C-E74B8BE3B067}") FOLDERID_CommonStartup = NewGUID("{82A5EA35-D9CD-47C5-9629-E15D2F714E6E}") FOLDERID_CommonTemplates = NewGUID("{B94237E7-57AC-4347-9151-B08C6C32D1F7}") FOLDERID_ComputerFolder = NewGUID("{0AC0837C-BBF8-452A-850D-79D08E667CA7}") FOLDERID_ConflictFolder = NewGUID("{4BFEFB45-347D-4006-A5BE-AC0CB0567192}") FOLDERID_ConnectionsFolder = NewGUID("{6F0CD92B-2E97-45D1-88FF-B0D186B8DEDD}") FOLDERID_Contacts = NewGUID("{56784854-C6CB-462B-8169-88E350ACB882}") FOLDERID_ControlPanelFolder = NewGUID("{82A74AEB-AEB4-465C-A014-D097EE346D63}") FOLDERID_Cookies = NewGUID("{2B0F765D-C0E9-4171-908E-08A611B84FF6}") FOLDERID_Desktop = NewGUID("{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}") FOLDERID_DeviceMetadataStore = NewGUID("{5CE4A5E9-E4EB-479D-B89F-130C02886155}") FOLDERID_Documents = NewGUID("{FDD39AD0-238F-46AF-ADB4-6C85480369C7}") FOLDERID_DocumentsLibrary = NewGUID("{7B0DB17D-9CD2-4A93-9733-46CC89022E7C}") FOLDERID_Downloads = NewGUID("{374DE290-123F-4565-9164-39C4925E467B}") FOLDERID_Favorites = NewGUID("{1777F761-68AD-4D8A-87BD-30B759FA33DD}") FOLDERID_Fonts = NewGUID("{FD228CB7-AE11-4AE3-864C-16F3910AB8FE}") FOLDERID_Games = NewGUID("{CAC52C1A-B53D-4EDC-92D7-6B2E8AC19434}") FOLDERID_GameTasks = NewGUID("{054FAE61-4DD8-4787-80B6-090220C4B700}") FOLDERID_History = NewGUID("{D9DC8A3B-B784-432E-A781-5A1130A75963}") FOLDERID_HomeGroup = NewGUID("{52528A6B-B9E3-4ADD-B60D-588C2DBA842D}") FOLDERID_HomeGroupCurrentUser = NewGUID("{9B74B6A3-0DFD-4F11-9E78-5F7800F2E772}") FOLDERID_ImplicitAppShortcuts = NewGUID("{BCB5256F-79F6-4CEE-B725-DC34E402FD46}") FOLDERID_InternetCache = NewGUID("{352481E8-33BE-4251-BA85-6007CAEDCF9D}") FOLDERID_InternetFolder = NewGUID("{4D9F7874-4E0C-4904-967B-40B0D20C3E4B}") FOLDERID_Libraries = NewGUID("{1B3EA5DC-B587-4786-B4EF-BD1DC332AEAE}") FOLDERID_Links = NewGUID("{BFB9D5E0-C6A9-404C-B2B2-AE6DB6AF4968}") FOLDERID_LocalAppData = NewGUID("{F1B32785-6FBA-4FCF-9D55-7B8E7F157091}") FOLDERID_LocalAppDataLow = NewGUID("{A520A1A4-1780-4FF6-BD18-167343C5AF16}") FOLDERID_LocalizedResourcesDir = NewGUID("{2A00375E-224C-49DE-B8D1-440DF7EF3DDC}") FOLDERID_Music = NewGUID("{4BD8D571-6D19-48D3-BE97-422220080E43}") FOLDERID_MusicLibrary = NewGUID("{2112AB0A-C86A-4FFE-A368-0DE96E47012E}") FOLDERID_NetHood = NewGUID("{C5ABBF53-E17F-4121-8900-86626FC2C973}") FOLDERID_NetworkFolder = NewGUID("{D20BEEC4-5CA8-4905-AE3B-BF251EA09B53}") FOLDERID_OriginalImages = NewGUID("{2C36C0AA-5812-4B87-BFD0-4CD0DFB19B39}") FOLDERID_PhotoAlbums = NewGUID("{69D2CF90-FC33-4FB7-9A0C-EBB0F0FCB43C}") FOLDERID_Pictures = NewGUID("{33E28130-4E1E-4676-835A-98395C3BC3BB}") FOLDERID_PicturesLibrary = NewGUID("{A990AE9F-A03B-4E80-94BC-9912D7504104}") FOLDERID_Playlists = NewGUID("{DE92C1C7-837F-4F69-A3BB-86E631204A23}") FOLDERID_PrintersFolder = NewGUID("{76FC4E2D-D6AD-4519-A663-37BD56068185}") FOLDERID_PrintHood = NewGUID("{9274BD8D-CFD1-41C3-B35E-B13F55A758F4}") FOLDERID_Profile = NewGUID("{5E6C858F-0E22-4760-9AFE-EA3317B67173}") FOLDERID_ProgramData = NewGUID("{62AB5D82-FDC1-4DC3-A9DD-070D1D495D97}") FOLDERID_ProgramFiles = NewGUID("{905E63B6-C1BF-494E-B29C-65B732D3D21A}") FOLDERID_ProgramFilesCommon = NewGUID("{F7F1ED05-9F6D-47A2-AAAE-29D317C6F066}") FOLDERID_ProgramFilesCommonX64 = NewGUID("{6365D5A7-0F0D-45E5-87F6-0DA56B6A4F7D}") FOLDERID_ProgramFilesCommonX86 = NewGUID("{DE974D24-D9C6-4D3E-BF91-F4455120B917}") FOLDERID_ProgramFilesX64 = NewGUID("{6D809377-6AF0-444B-8957-A3773F02200E}") FOLDERID_ProgramFilesX86 = NewGUID("{7C5A40EF-A0FB-4BFC-874A-C0F2E0B9FA8E}") FOLDERID_Programs = NewGUID("{A77F5D77-2E2B-44C3-A6A2-ABA601054A51}") FOLDERID_Public = NewGUID("{DFDF76A2-C82A-4D63-906A-5644AC457385}") FOLDERID_PublicDesktop = NewGUID("{C4AA340D-F20F-4863-AFEF-1F769F2BE730}") FOLDERID_PublicDocuments = NewGUID("{ED4824AF-DCE4-45A8-81E2-FC7965083634}") FOLDERID_PublicDownloads = NewGUID("{3D644C9B-1FB8-4F30-9B45-F670235F79C0}") FOLDERID_PublicGameTasks = NewGUID("{DEBF2536-E1A8-4C59-B6A2-414586476AEA}") FOLDERID_PublicLibraries = NewGUID("{48DAF80B-E6CF-4F4E-B800-0E69D84EE384}") FOLDERID_PublicMusic = NewGUID("{3214FAB5-9757-4298-BB61-92A9DEAA44FF}") FOLDERID_PublicPictures = NewGUID("{B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5}") FOLDERID_PublicRingtones = NewGUID("{E555AB60-153B-4D17-9F04-A5FE99FC15EC}") FOLDERID_PublicUserTiles = NewGUID("{0482af6c-08f1-4c34-8c90-e17ec98b1e17}") FOLDERID_PublicVideos = NewGUID("{2400183A-6185-49FB-A2D8-4A392A602BA3}") FOLDERID_QuickLaunch = NewGUID("{52a4f021-7b75-48a9-9f6b-4b87a210bc8f}") FOLDERID_Recent = NewGUID("{AE50C081-EBD2-438A-8655-8A092E34987A}") FOLDERID_RecordedTVLibrary = NewGUID("{1A6FDBA2-F42D-4358-A798-B74D745926C5}") FOLDERID_RecycleBinFolder = NewGUID("{B7534046-3ECB-4C18-BE4E-64CD4CB7D6AC}") FOLDERID_ResourceDir = NewGUID("{8AD10C31-2ADB-4296-A8F7-E4701232C972}") FOLDERID_Ringtones = NewGUID("{C870044B-F49E-4126-A9C3-B52A1FF411E8}") FOLDERID_RoamingAppData = NewGUID("{3EB685DB-65F9-4CF6-A03A-E3EF65729F3D}") FOLDERID_RoamingTiles = NewGUID("{AAA8D5A5-F1D6-4259-BAA8-78E7EF60835E}") FOLDERID_SampleMusic = NewGUID("{B250C668-F57D-4EE1-A63C-290EE7D1AA1F}") FOLDERID_SamplePictures = NewGUID("{C4900540-2379-4C75-844B-64E6FAF8716B}") FOLDERID_SamplePlaylists = NewGUID("{15CA69B3-30EE-49C1-ACE1-6B5EC372AFB5}") FOLDERID_SampleVideos = NewGUID("{859EAD94-2E85-48AD-A71A-0969CB56A6CD}") FOLDERID_SavedGames = NewGUID("{4C5C32FF-BB9D-43B0-B5B4-2D72E54EAAA4}") FOLDERID_SavedPictures = NewGUID("{3B193882-D3AD-4EAB-965A-69829D1FB59F}") FOLDERID_SavedPicturesLibrary = NewGUID("{E25B5812-BE88-4BD9-94B0-29233477B6C3}") FOLDERID_SavedSearches = NewGUID("{7D1D3A04-DEBB-4115-95CF-2F29DA2920DA}") FOLDERID_SEARCH_CSC = NewGUID("{ee32e446-31ca-4aba-814f-a5ebd2fd6d5e}") FOLDERID_SEARCH_MAPI = NewGUID("{98ec0e18-2098-4d44-8644-66979315a281}") FOLDERID_SearchHome = NewGUID("{190337d1-b8ca-4121-a639-6d472d16972a}") FOLDERID_SendTo = NewGUID("{8983036C-27C0-404B-8F08-102D10DCFD74}") FOLDERID_SidebarDefaultParts = NewGUID("{7B396E54-9EC5-4300-BE0A-2482EBAE1A26}") FOLDERID_SidebarParts = NewGUID("{A75D362E-50FC-4fb7-AC2C-A8BEAA314493}") FOLDERID_SkyDrive = NewGUID("{A52BBA46-E9E1-435f-B3D9-28DAA648C0F6}") FOLDERID_SkyDriveCameraRoll = NewGUID("{767E6811-49CB-4273-87C2-20F355E1085B}") FOLDERID_SkyDriveDocuments = NewGUID("{24D89E24-2F19-4534-9DDE-6A6671FBB8FE}") FOLDERID_SkyDriveMusic = NewGUID("{C3F2459E-80D6-45DC-BFEF-1F769F2BE730}") FOLDERID_SkyDrivePictures = NewGUID("{339719B5-8C47-4894-94C2-D8F77ADD44A6}") FOLDERID_StartMenu = NewGUID("{625B53C3-AB48-4EC1-BA1F-A1EF4146FC19}") FOLDERID_Startup = NewGUID("{B97D20BB-F46A-4C97-BA10-5E3608430854}") FOLDERID_SyncManagerFolder = NewGUID("{43668BF8-C14E-49B2-97C9-747784D784B7}") FOLDERID_SyncResultsFolder = NewGUID("{289a9a43-be44-4057-a41b-587a76d7e7f9}") FOLDERID_SyncSetupFolder = NewGUID("{0F214138-B1D3-4a90-BBA9-27CBC0C5389A}") FOLDERID_System = NewGUID("{1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}") FOLDERID_SystemX86 = NewGUID("{D65231B0-B2F1-4857-A4CE-A8E7C6EA7D27}") FOLDERID_Templates = NewGUID("{A63293E8-664E-48DB-A079-DF759E0509F7}") FOLDERID_UserPinned = NewGUID("{9E3995AB-1F9C-4F13-B827-48B24B6C7174}") FOLDERID_UserProfiles = NewGUID("{0762D272-C50A-4BB0-A382-697DCD729B80}") FOLDERID_UserProgramFiles = NewGUID("{5CD7AEE2-2219-4A67-B85D-6C9CE15660CB}") FOLDERID_UserProgramFilesCommon = NewGUID("{BCBD3057-CA5C-4622-B42D-BC56DB0AE516}") FOLDERID_UsersFiles = NewGUID("{F3CE0F7C-4901-4ACC-8648-D5D44B04EF8F}") FOLDERID_UsersLibraries = NewGUID("{A302545D-DEFF-464b-ABE8-61C8648D939B}") FOLDERID_Videos = NewGUID("{18989B1D-99B5-455B-841C-AB7C74E4DDFC}") FOLDERID_VideosLibrary = NewGUID("{491E922F-5643-4AF4-A7EB-4E7A138D8174}") FOLDERID_Windows = NewGUID("{F38BF404-1D43-42F2-9305-67DE0B28FC23}") ) var ( modshell32 = syscall.NewLazyDLL("shell32.dll") procSHBrowseForFolder = modshell32.NewProc("SHBrowseForFolderW") procSHGetPathFromIDList = modshell32.NewProc("SHGetPathFromIDListW") procDragAcceptFiles = modshell32.NewProc("DragAcceptFiles") procDragQueryFile = modshell32.NewProc("DragQueryFileW") procDragQueryPoint = modshell32.NewProc("DragQueryPoint") procDragFinish = modshell32.NewProc("DragFinish") procShellExecute = modshell32.NewProc("ShellExecuteW") procExtractIcon = modshell32.NewProc("ExtractIconW") procGetSpecialFolderPath = modshell32.NewProc("SHGetSpecialFolderPathW") procShellNotifyIcon = modshell32.NewProc("Shell_NotifyIconW") procShellNotifyIconGetRect = modshell32.NewProc("Shell_NotifyIconGetRect") procSHGetKnownFolderPath = modshell32.NewProc("SHGetKnownFolderPath") procSHAppBarMessage = modshell32.NewProc("SHAppBarMessage") ) type APPBARDATA struct { CbSize uint32 HWnd HWND UCallbackMessage uint32 UEdge uint32 Rc RECT LParam uintptr } func ShellNotifyIcon(cmd uintptr, nid *NOTIFYICONDATA) bool { ret, _, _ := procShellNotifyIcon.Call(cmd, uintptr(unsafe.Pointer(nid))) return ret == 1 } func SHBrowseForFolder(bi *BROWSEINFO) uintptr { ret, _, _ := procSHBrowseForFolder.Call(uintptr(unsafe.Pointer(bi))) return ret } func SHGetKnownFolderPath(rfid *GUID, dwFlags uint32, hToken HANDLE) (string, error) { var path *uint16 ret, _, _ := procSHGetKnownFolderPath.Call(uintptr(unsafe.Pointer(rfid)), uintptr(dwFlags), hToken, uintptr(unsafe.Pointer(path))) if ret != uintptr(windows.S_OK) { return "", fmt.Errorf("SHGetKnownFolderPath failed: %v", ret) } return windows.UTF16PtrToString(path), nil } func SHGetPathFromIDList(idl uintptr) string { buf := make([]uint16, 1024) procSHGetPathFromIDList.Call( idl, uintptr(unsafe.Pointer(&buf[0]))) return syscall.UTF16ToString(buf) } func DragAcceptFiles(hwnd HWND, accept bool) { procDragAcceptFiles.Call( uintptr(hwnd), uintptr(BoolToBOOL(accept))) } func DragQueryFile(hDrop HDROP, iFile uint) (fileName string, fileCount uint) { ret, _, _ := procDragQueryFile.Call( uintptr(hDrop), uintptr(iFile), 0, 0) fileCount = uint(ret) if iFile != 0xFFFFFFFF { buf := make([]uint16, fileCount+1) ret, _, _ := procDragQueryFile.Call( uintptr(hDrop), uintptr(iFile), uintptr(unsafe.Pointer(&buf[0])), uintptr(fileCount+1)) if ret == 0 { panic("Invoke DragQueryFile error.") } fileName = syscall.UTF16ToString(buf) } return } func DragQueryPoint(hDrop HDROP) (x, y int, isClientArea bool) { var pt POINT ret, _, _ := procDragQueryPoint.Call( uintptr(hDrop), uintptr(unsafe.Pointer(&pt))) return int(pt.X), int(pt.Y), (ret == 1) } func DragFinish(hDrop HDROP) { procDragFinish.Call(uintptr(hDrop)) } func ShellExecute(hwnd HWND, lpOperation, lpFile, lpParameters, lpDirectory string, nShowCmd int) error { var op, param, directory uintptr if len(lpOperation) != 0 { op = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpOperation))) } if len(lpParameters) != 0 { param = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpParameters))) } if len(lpDirectory) != 0 { directory = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpDirectory))) } ret, _, _ := procShellExecute.Call( uintptr(hwnd), op, uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpFile))), param, directory, uintptr(nShowCmd)) errorMsg := "" if ret != 0 && ret <= 32 { switch int(ret) { case ERROR_FILE_NOT_FOUND: errorMsg = "The specified file was not found." case ERROR_PATH_NOT_FOUND: errorMsg = "The specified path was not found." case ERROR_BAD_FORMAT: errorMsg = "The .exe file is invalid (non-Win32 .exe or error in .exe image)." case SE_ERR_ACCESSDENIED: errorMsg = "The operating system denied access to the specified file." case SE_ERR_ASSOCINCOMPLETE: errorMsg = "The file name association is incomplete or invalid." case SE_ERR_DDEBUSY: errorMsg = "The DDE transaction could not be completed because other DDE transactions were being processed." case SE_ERR_DDEFAIL: errorMsg = "The DDE transaction failed." case SE_ERR_DDETIMEOUT: errorMsg = "The DDE transaction could not be completed because the request timed out." case SE_ERR_DLLNOTFOUND: errorMsg = "The specified DLL was not found." case SE_ERR_NOASSOC: errorMsg = "There is no application associated with the given file name extension. This error will also be returned if you attempt to print a file that is not printable." case SE_ERR_OOM: errorMsg = "There was not enough memory to complete the operation." case SE_ERR_SHARE: errorMsg = "A sharing violation occurred." default: errorMsg = fmt.Sprintf("Unknown error occurred with error code %v", ret) } } else { return nil } return errors.New(errorMsg) } func ExtractIcon(lpszExeFileName string, nIconIndex int) HICON { ret, _, _ := procExtractIcon.Call( 0, uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(lpszExeFileName))), uintptr(nIconIndex)) return HICON(ret) } func SHGetSpecialFolderPath(hwndOwner HWND, lpszPath *uint16, csidl CSIDL, fCreate bool) bool { ret, _, _ := procGetSpecialFolderPath.Call( uintptr(hwndOwner), uintptr(unsafe.Pointer(lpszPath)), uintptr(csidl), uintptr(BoolToBOOL(fCreate)), 0, 0) return ret != 0 } func GetSystrayBounds(hwnd HWND, uid uint32) (*RECT, error) { var rect RECT identifier := NOTIFYICONIDENTIFIER{ CbSize: uint32(unsafe.Sizeof(NOTIFYICONIDENTIFIER{})), HWnd: hwnd, UId: uid, } ret, _, _ := procShellNotifyIconGetRect.Call( uintptr(unsafe.Pointer(&identifier)), uintptr(unsafe.Pointer(&rect))) if ret != S_OK { return nil, syscall.GetLastError() } return &rect, nil } // GetTaskbarPosition returns the location of the taskbar. func GetTaskbarPosition() *APPBARDATA { var result APPBARDATA result.CbSize = uint32(unsafe.Sizeof(APPBARDATA{})) ret, _, _ := procSHAppBarMessage.Call( ABM_GETTASKBARPOS, uintptr(unsafe.Pointer(&result))) if ret == 0 { return nil } return &result }