TIP [DELPHI] – Invio di una mail utilizzando il protocollo MAPI
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function SendEMail(Handle: THandle; Mail: TStrings): Cardinal; type TAttachAccessArray = array [0..0] of TMapiFileDesc; PAttachAccessArray = ^TAttachAccessArray; var MapiMessage: TMapiMessage; Receip: TMapiRecipDesc; Attachments: PAttachAccessArray; AttachCount: Integer; i1: integer; FileName: string; dwRet: Cardinal; MAPI_Session: Cardinal; WndList: Pointer; begin dwRet := MapiLogon(Handle, PChar(''), PChar(''), MAPI_LOGON_UI or MAPI_NEW_SESSION, 0, @MAPI_Session); if (dwRet <> SUCCESS_SUCCESS) then begin MessageBox(Handle, PChar('Error while trying to send email'), PChar('Error'), MB_ICONERROR or MB_OK); end else begin FillChar(MapiMessage, SizeOf(MapiMessage), #0); Attachments := nil; FillChar(Receip, SizeOf(Receip), #0); if Mail.Values['to'] <> '' then begin Receip.ulReserved := 0; Receip.ulRecipClass := MAPI_TO; Receip.lpszName := StrNew(PChar(Mail.Values['to'])); Receip.lpszAddress := StrNew(PChar('SMTP:' + Mail.Values['to'])); Receip.ulEIDSize := 0; MapiMessage.nRecipCount := 1; MapiMessage.lpRecips := @Receip; end; AttachCount := 0; for i1 := 0 to MaxInt do begin if Mail.Values['attachment' + IntToStr(i1)] = '' then break; Inc(AttachCount); end; if AttachCount > 0 then begin GetMem(Attachments, SizeOf(TMapiFileDesc) * AttachCount); for i1 := 0 to AttachCount - 1 do begin FileName := Mail.Values['attachment' + IntToStr(i1)]; Attachments[i1].ulReserved := 0; Attachments[i1].flFlags := 0; Attachments[i1].nPosition := ULONG($FFFFFFFF); Attachments[i1].lpszPathName := StrNew(PChar(FileName)); Attachments[i1].lpszFileName := StrNew(PChar(ExtractFileName(FileName))); Attachments[i1].lpFileType := nil; end; MapiMessage.nFileCount := AttachCount; MapiMessage.lpFiles := @Attachments^; end; if Mail.Values['subject'] <> '' then MapiMessage.lpszSubject := StrNew(PChar(Mail.Values['subject'])); if Mail.Values['body'] <> '' then MapiMessage.lpszNoteText := StrNew(PChar(Mail.Values['body'])); WndList := DisableTaskWindows(0); try Result := MapiSendMail(MAPI_Session, Handle, MapiMessage, MAPI_DIALOG, 0); finally EnableTaskWindows( WndList ); end; for i1 := 0 to AttachCount - 1 do begin StrDispose(Attachments[i1].lpszPathName); StrDispose(Attachments[i1].lpszFileName); end; if Assigned(MapiMessage.lpszSubject) then StrDispose(MapiMessage.lpszSubject); if Assigned(MapiMessage.lpszNoteText) then StrDispose(MapiMessage.lpszNoteText); if Assigned(Receip.lpszAddress) then StrDispose(Receip.lpszAddress); if Assigned(Receip.lpszName) then StrDispose(Receip.lpszName); MapiLogOff(MAPI_Session, Handle, 0, 0); end; End; |
Esempio di utilizzo della funzione :
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mail.values['to'] := InputBox('Inserire l''indirizzo di posta del destinatario','Inserire l''indirizzo di posta del destinatario',''); mail.values['subject'] := 'Campagna : [' + InputBox('Nome Campagna','Nome Campagna','') + ']'; ts.Add('[<nome file>]'); ts.Add('[<User Name>]'); ts.add(''); ts.add('formato nome file : [DataOut_dd_mm_yy_ExportCount.zip]'); ts.add(' - "DataOut" <-- costante nome '); ts.add(' - "dd_mm_yy" <-- formato data '); ts.add(' - "_ExportCount" <-- contatore di esportazione utile nel caso di molteplici invii dello stesso file '); mail.values['body'] := ts.Text; mail.values['attachment0'] := OutFileName + '.zip'; // mail.values['attachment1']:='C:\Test2.txt'; { TODO -oivan -cimportant : Inserire la procedura di gestione della mail } sendEMail(Application.Handle, mail); |
