changed behavior of the return key

edit box: changed the return key to only insert a new line if at the
  end of a non-blank link (ctrl+return inserts a new line regardless)
removed the creation of a new key press ctrl+return event because it
  doesn't work with the new return key check; instead just insert the
  new line character directly

editbox.cpp

@@ -46,16 +46,22 @@ EditBox::EditBox(QWidget *parent) :
 
 void EditBox::keyPressEvent(QKeyEvent *event)
 {
+	QTextCursor cursor = textCursor();
+
 	switch (event->key())
 	{
 	case Qt::Key_Return:
 	case Qt::Key_Enter:
 		// intercept Control+Return and change it to a Return event
 		if (event->modifiers() & Qt::ControlModifier)
 		{
-			event = new QKeyEvent(QEvent::KeyPress, Qt::Key_Return,
-				Qt::NoModifier);
-			QApplication::postEvent(this, event);
+			cursor.insertText("\n");
+			return;
+		}
+		// intercept Return when cursor is not at the end of a line
+		if (!cursor.atBlockEnd() || cursor.atBlockStart())
+		{
+			moveCursor(QTextCursor::NextBlock);
 			return;
 		}
 		break;