Send by email

PdfForQtViewer/pdfsendmail.cpp

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+//    Copyright (C) 2019 Jakub Melka
+//
+//    This file is part of PdfForQt.
+//
+//    PdfForQt is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Lesser General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//    PdfForQt is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public License
+//    along with PDFForQt.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "pdfsendmail.h"
+
+#include <QDir>
+#include <QWidget>
+#include <QFileInfo>
+
+#ifdef Q_OS_WIN
+#include <Windows.h>
+#include <MAPI.h>
+#include <string>
+#endif
+
+namespace pdfviewer
+{
+
+bool PDFSendMail::sendMail(QWidget* parent, QString subject, QString fileName)
+{
+#ifdef Q_OS_WIN
+    QFileInfo fileInfo(fileName);
+    std::wstring subjectString = subject.toStdWString();
+    std::wstring fileNameString = fileInfo.fileName().toStdWString();
+    std::wstring filePathString = QDir::toNativeSeparators(fileInfo.absoluteFilePath()).toStdWString();
+
+
+    HMODULE mapiLib = ::LoadLibrary(L"MAPI32.DLL");
+    if (!mapiLib)
+    {
+        return false;
+    }
+
+    LPMAPISENDMAILW SendMail;
+    SendMail = (LPMAPISENDMAILW)GetProcAddress(mapiLib, "MAPISendMailW");
+    if (!SendMail)
+    {
+        ::FreeLibrary(mapiLib);
+        return false;
+    }
+
+    // Jakub Melka: now, we have function for mail sending, we can use it!
+    // First, we must fill the info structures.
+    MapiFileDescW fileDesc;
+    ::ZeroMemory(&fileDesc, sizeof(fileDesc));
+
+    fileDesc.nPosition = ULONG(-1);
+    fileDesc.lpszFileName = const_cast<PWSTR>(fileNameString.c_str());
+    fileDesc.lpszPathName = const_cast<PWSTR>(filePathString.c_str());
+
+    MapiMessageW message;
+    ::ZeroMemory(&message, sizeof(message));
+
+    message.lpszSubject = const_cast<PWSTR>(subjectString.c_str());
+    message.nFileCount = 1;
+    message.lpFiles = &fileDesc;
+
+    const int returnCode = SendMail(0, parent->winId(), &message, MAPI_LOGON_UI | MAPI_DIALOG, 0);
+
+    ::FreeLibrary(mapiLib);
+
+    switch (returnCode)
+    {
+        case SUCCESS_SUCCESS:
+        case MAPI_USER_ABORT:
+        case MAPI_E_LOGIN_FAILURE:
+            return true;
+
+        default:
+            return false;
+    }
+
+    return false;
+#else
+    static_assert(false, "Implement this for another OS!");
+    return false;
+#endif
+}
+
+}   // namespace pdfviewer