allow building app without network module

QTblEditor.pro

@@ -5,7 +5,8 @@
 TEMPLATE = app
 TARGET = QTblEditor
 
-QT += network
+CONFIG(NO_NETWORK): DEFINES += NO_NETWORK
+else: QT += network
 
 greaterThan(QT_MAJOR_VERSION, 4): {
     DEFINES += IS_QT5

README.md

@@ -7,3 +7,5 @@ http://d2mods.info/forum/viewtopic.php?f=7&t=57015
 The project can be built with [Qt](https://www.qt.io/) 4 and later, code conforms to C++03 standard.
 
 Visual Studio project can be used to build with Qt 5 and later.
+
+To build without Qt network module, pass `CONFIG+=NO_NETWORK` to `qmake`.

src/qtbleditor.cpp

@@ -32,7 +32,9 @@
 #endif
 #endif
 
+#ifndef NO_NETWORK
 #include <QNetworkReply>
+#endif
 
 #ifndef QT_NO_DEBUG
 #include <QDebug>
@@ -346,6 +348,9 @@ void QTblEditor::reopen()
 
 void QTblEditor::sendToServer()
 {
+#ifdef NO_NETWORK
+    QMessageBox::critical(this, QString(), "App was built without network module");
+#else
     QSettings settings;
     QString url = settings.value("serverUrl").toString();
     if (url.isEmpty())
@@ -377,6 +382,7 @@ void QTblEditor::sendToServer()
     else
         QMessageBox::information(this, tr("Success"), tr("Response:") + "\n" + reply->readAll());
     reply->deleteLater();
+#endif
 }
 
 bool QTblEditor::loadFile(const QString &fileName, bool shouldShowOpenOptions)